thomson rca scenium dlp technikal training manual

SAFETY INFORMATION CAUTIONSafety information is contained in the appropriate Thomson Consumer Electronics ServiceData. All product safety requirements must be complied with prior to returning theinstrument to the consumer. Servicers who defeat safety features or fail to perform safetychecks may be liable for any resulting damages and may expose themselves and others topossible injury.

All integrated circuits, all surface mounted devices, and manyother semiconductors are electrostatically sensitive andtherefore require special handling techniques.

Second Edition 0704 - First PrintingCopyright 2004 ThomsonTrademark(s)® Registered Marca(s) Registrada(s)Printed in U.S.A.

Prepared byThomsonTechnical Training Department, INH905PO Box 1976Indianapolis, Indiana 46206 U.S.A.

This publication is intended to aid the technician in servicing the First Series of DLPtelevision. This manual will explain the basic theory of operation of the major modules.This manual covers the AC In CBA, Formatter CBA, Audio CBA, A/V In/Out CBA andthe Light Engine along with practical troubleshooting tips and suggestions. It isdesigned to assist the technician in becoming familiar with chassis operation, increaseconfidence and improve overall efficiency in servicing the product.

Note: This publication is intended to be used only as a training aid. Never use trainingdiagrams alone to troubleshoot. It is not meant to replace service data. TCE ElectronicService Information for this instrument contains specific information about parts, safetyand alignment procedures and must be consulted before performing any service. Theinformation in this manual is as accurate as possible at the time of publication. Circuitdesigns and drawings are subject to change without notice.

FOREWORD

CONTENTS

Introduction ................................................................................5Chassis Introduction & Electrical Overview ..............................9DLP Technology Overview .........................................................12Light Engine Overview .............................................................15AC In CBA Overview (power supplies) .....................................20DM2CR Overview.......................................................................22Formatter CBA Overview...........................................................24Audio Switching Overview........................................................26Audio Processing Overview .....................................................28Video Switching Overview...........................................................30System Control ..........................................................................32Service Tips ...............................................................................33Service Menu's & Diagnostics...................................................34

Troubleshooting.........................................................................35

Fig. 1 DLPIntroductionThis new generation of television usesDigital Light Processing (DLP)Technology from Texas Instruments(TI) to display a high quality HDTVpicture in a lightweight cabinet. Theheart of DLP Technology is a speciallydesign semiconductor, a color wheel,and a high output light bulb. Thesedevices are housed in a cabinet that is16" deep and weights approximately100 pounds. These advantage makethe TV a pleasure to watch and toposition in most viewing locations

Improved serviceability is anotheradvantage of televisions using DLPTechnology. The set is lightweightand easy to move or place on a bench.Electrically, the set contains seven

modules. There is no componentlevel troubleshooting. Alignments arealso reduced. With DLP Technology,convergence and geometryalignments are not needed. The FirstSeries of DLP has only one mechanicaland a couple of electrical adjustments.

There are basically three advatagesabout HDTV that provides a superiorviewing experience: (1) resolution, (2)aspect ratio, and (3) digital video anddigital sound.

ResolutionResolution is measured by calculatingthe number of active lines of pixels. Aanalog NTSC television only has aresolution of about 200,000 pixels (480

vertical pixels x 440 horizontal pixels= 211,200 pixels). The HDTV (ATSC)format is capable of more than 2 millionpixels (1,920 x 1,080 = 2, 073,600).More pixels equals more detail in thepicture. In summary, HDTV is capableof resolution that is up to 10 times theresolution of the picture on a regular,analog TV.

Aspect RatioWhen the standards were beingdeveloped for television broadcastingin 1941 by the (National TelevisionStandards Committee (NTSC), it madesense to adopt the 4 x 3 aspect ratiothat the film industry was using at thattime. The 16 x 9 aspect ratio wasoriginally developed back in the 50’sby the movie industry (also called wide-screen format). When the standardsfor ATSC were being developed bythe Advanced Television StandardsCommittee, the 16 x 9 aspect ratiowas chosen as the format for HDTV.The widescreen format made sensebecause it’s much closer to the waywe see. Our field of vision is actuallymuch wider than tall because of ourperipheral vision.

Digital Video Signal and DigitalSoundThe analog television broadcastsystem (NTSC) that has been used inthe United States for the past 50 yearstransmits signals as analog electronicwaves. These waves can sufferdegradation as the signal travels tothe receiver. Digital signals, incontrast, can be reproduced preciselybecause the images are transmittedand received digitally. This producesa signal that is capable of displayingstudio-quality video and Dolby Digital5.1 channel sound.

FeaturesThe picture sett ings can becustomized to fit viewing taste andmatch the lighting conditions wherethe unit is located by using personalpresets and/or the automatic picturequality settings: Vibrant, Natural,Cinematic. Each Input Jack can beadjusted to a different setting and theunit automatically adjusts the picturesettings to it’s unique value when thatinput is selected.

Elaborate on-screen ‘Help Text’ helpsthe user learn more about the featuresof the First Series of DLP and helpsthem to use them more effectively.

The GUIDE Plus+ System on-screenprogramming guide helps the usernavigate through hundreds ofchannels so they can quickly seewhat’s on and tune directly to a specificshow from the guide. The user canuse the ‘Sort’ feature to search listingsand can even set up reminders towatch a certain show via the GUIDEPlus+ system’s Watch menu.

Integrated ATSC Tuner with QAM

Thomson was the first to offer anintegrated ATSC tuner in its HDTV’s(no need for a set-top box to receiveand decode over the air ATSCprogramming). The new tuner in theFirst Series of DLP can also decodethe QAM (Quadrature AmplitudeModulation) digital cable signal. Thereis no need for a cable box to view non-encoded standard, digital cableprogramming.

Note: a cable box is necessary toview scrambled (encoded) and/orpremium channels.

Fig. 2 DLP with standFireWire® with Two-WayDTVLink®The DLP will allow you to hookup andcontrol components via 1394(FireWire) cable. This is accomplishedvia the 2-way DTVLink jacks and youcan network high-speed compatible1394 digital components. The two-way jacks allow the audio and videosignals to flow in and out of the 1394components.

NetConnectWith an Ethernet connection and aweb browser built into the instrument,the internet can be accessed directly

from the TV. A high-speed connection,such as a DSL (Digital SubscriberLine) unit or cable modem is neededto use the web browser, along with asubscription to an ISP (internet serviceprovider). Digital photos can beaccessed directly from a PC anddisplay on the TV. The browser haslimitations and might not be able tointerpret all files, such as streamingaudio, video and PDF’s.

Audio SystemThe sound system has a total of 60watts total power. It has front speakerswith two 1" tweeters and two 5"

Fig. 3 Side View

midrange drivers to create incrediblesound. A 7-band on-screen graphicequalizer allows customization of thesound quality. SRS TruSurroundprovides surround sound technologyand with two rear speaker outputs.For those who want to hook up ahome theatre audio system, there isan optical Dolby Digital output as wellas a 50-watt center channel input.

Record Output JacksBecause the VCRs in mosthouseholds are analog and can notrecognize the ATSC digital signal,recording HDTV broadcasts was notpossible without purchasing additionalequipment. For this reason a VideoRecord Output Jack and Audio OutputL/R jacks are provided on the DLP.These video and audio output recordjacks enables the recording of bothNTSC analog and ATSC digitalprogramming.

CinemaScreen™Check out the black, borderless framearound your HDTV’s screen. This isnot just a design feature— theCinemaScreen actually improvescontrast by providing a brighter,sharper picture. Feel like you’re partof the picture with CinemaScreen.Digital Light Processing, DLP aretrademarks of Texas Instruments. All otherproducts and names may or may not betrademarks or registered trademarks oftheir respective companies.

Light Engine Lamp Power Supply

Lamp Assembly

Standby & RunPower Supply CBA

DM2CR

A/V In/Out CBA

Audio CBA

Formatter CBA

Fig. 4 First Series of DLP Light Engine Assembly

Fig. 5 ATC311 Chassis Assembly

Chassis Introduction &Electrical OverviewThe chassis in the First Series of DLP ismade up of seven (7) major modules.These include the “AC In” CBA whichcontains the Standby and Run powersupplies. The “Audio” CBA whichprocesses all audio signals. The “A/VIn/Out” CBA has the in/out jacks andalso does all the video and audioswitching. The fourth is the “Formatter”

circuit board and it is responsible forconverting the video signals into a formatthat the light engine can use. The fifthis the “DM2CR” which contains theATSC tuner, NTSC tuner and the QAMdigital cable decoder. The DM2CR alsoserves as the system control for theinstrument. The sixth module is thelight engine and seventh is the lamppower supply.

V-SyncH-Sync

YPrPb

AC In CBA

FormatterCBA

AudioCBA

A/V In/OutCBA

StandbyPower Supply

Run (Main)Power Supply

Bridge

120VAC

DoublerRelay

DM2CR

FrontA/VIn

LeftX-over

RightX-over

+12VS

Aud-Pwr

3.3V & 2.5V

Pwr_

Goo

d+5

VR+1

2VR

+9VR

Pwr_Good

+5VR+12VR+3.3VR+2.5VR

BEP

EEPROM

RedGreen

H/V SyncV-SyncH-Sync

FSW

YPrPb

Tx/lamp_Lit

Rx/Dim

SW

+9VR

IR FPA Lite Pipe

+6VS

+12V

S

+6VS

+5VR

+5VS

SW

-5VS

+12V

R

+33V

SPw

rFai

l

On/Off

Dega

uss

BlueIV401

BV401

BV402 BW901

BW902

Chroma/LumaDRAM

IW702/03/4/ 05/06/07

BP503

4

12

14

13

5

6

7

8

10

2

15387

J24603 +21V

-21V

13

J24604

J24605

J2460216

12

4 14J24702

J24251

J24252

6 4 2 8 1314

J11903J11501

J11902

J11901

J12101

J22101

J26903

J26901

J26905

J28901

J26904

J32401

J32402J26104

J23401 J23402

IW501

J13602

J13604

J13603

J22104

J22105

1 38 13

Digital SignalProcessing

Luma

IW702/3/4

Reg

IW601IW701IW801IW901

21

7

18

2329DVI Video

5

6

2

I C_Dat2I C_Clk2

I C_Clk2

I C_Dat2

(RUN 2)

(RUN 2)

2

59

3

12

ToLightEngine

ToLampPwrSuply

ToLampDoorSwitch

ToLightEngine

Fig. 6 Chassis Block Diagram and Interconnect

Chassis Electrical Overview

There are five (5) major circuit boards inthe First Series of DLP chassis (minusthe light engine). These include the“AC In” CBA, “Audio” processing CBA,the “DM2CR”, the “A/V In/Out” CBA andthe “Formatter” CBA.

The AC In CBA provides the StandbyDC power and the Run supply DC power.Both power supplies are switch mode

power supplies and are very similar.The main difference is that the runsupply has an on/off circuit that iscontrolled by the system control microin the DM2CR.

An AC doubler on the AC In CBA isused to generate power for the lamppower supply.

Note: A valuabletroubleshooting tip is to listenfor the lamp power supplyrelay click when AC is pluggedin. Since the relay is power bythe +12VS source, if the relaydoesn’t click this is a goodindication the standby powersupply is inoperative.

The Audio CBA is responsible for finalprocessing of all baseband audiosignals. This includes volume,equalization, balance and SurroundSound. The audio output poweramplifiers that drive the internalspeakers are also located on the AudioCBA. Audio for the audio out jacks aswell as the FAV (Front Audio Video)circuit are supplied by the Audio CBA.Power (+/-21V) for the Audio CBA isprovided by the standby supply.

The DM2CR module contains both anNTSC and ATSC tuner section as wellas the NTSC PIP tuner (see DM2CRModule Overview for more details). Thetuners are capable of processing bothdigital and analog RF signals (ATSC &NTSC) from either terrestrial or cablesources. The DM2CR is also 256QAMdigital cable compatible. The DM2CRhas 2 DTV Link connectors which are acompressed digital video inputs offeringan IEEE-1394 type video connectionfor consumer devices such as satellitereceivers, cable receivers, and digitalrecorders that meet the CEAspecifications for DTV Link. DTV Link isbetter known as 1394 or FireWire fordigital televisions. Audio and videoinformation is carried on a single wire.

The DM2CR module performs theNTSC decoding of component, SVHS,and composite video signals. TheDM2CR also recovers the teletext,closed caption and GemStar datasignals that accompany any input video.

All 1H video inputs (NTSC) includingsignals from the A/V In/Out circuit boardare up-converted to 2H by the DM2CR.The video output to the formatter CBAis YPrPb component. Any 2Hcomponent (YPrPb) that is input to theA/V In/Out CBA is routed directly to theformatter.

The audio and video in/out jacks arelocated on the A/V In/Out CBA. The A/V CBA also provides audio and videoswitching for external video and audiosignals. The auto detected 1H and 2Hvideo signal are routed via the A/V In/Out circuit board. The 1H and 2H NTSCis routed to the DM2CR for up-conversion. Any 2H component externalvideo signal is routed directly to theformatter circuit for final processing.

The formatter circuit board is responsiblefor converting the analog video fromeither the DM2CR or the analog inputsfrom the A/V In/Out circuit board into aformat that is compatible with the lightengine. All functions and circuits on theformatter circuit board is monitored andcontrolled by the system controlmicrocomputer in the DM2CR module.This is accomplished via the RUN 2 I2Cclock and data bus. The same I2C busis also routed through the formatterboard to the light engine. The 2H and2.14H external video inputs are appliedto the formatter circuit board (viaconnector BV402) where it is applied tothe BEP (back end processor) forprocessing into an analog RGB signal.The NTSC and the ATSC analog videosignal (2H) from the DM2CR is alsoinput to the formatter (via connectorBV401). The video is applied to IV401for conversion to RGB. The RGB outputfrom IV401 is then applied to the DigitalSignal processing circuits where it isdigitized and output to the light engineas DVI (Digital Video Interface).

MMD (DLP) Technology Overview

Fig. 7 DLP Device (MMD)

Fig. 8 Micro Mirror Device(Exploded View)

Graphics, text and artwork courtesy of TexasInstruments. Digital Light Processing, DLP areregistered trademarks of Texas Instruments.

Texas Instruments Digital LightProcessing (DLP) technology providesan all digital projection display that offerssuperior picture quality in terms ofresolution, brightness, contrast, andcolor fidelity. The DLP device consistsof an array of movable mcromirrors.Each mirror is independentlycontrollable and is used to modulatereflected light. The mirror is controlledby loading data into the memory celllocated below the mirror. The dataelectrostatically controls the mirror’s tiltangle which controls whether videopasses through the projection lens andonto a screen or reflected away.

Until recently, light-valve technologiesfor projection display applications havebeen unable to take full advantage ofthe economies and stability offered bythe digital revolution. Increasing digitalcontent has been incorporated into thetransmission and signal processing

chain from source material to theprojection display light valve. Ultimately,however, the light valve itself is analogin nature and subject to analog

limitations. The possibility of an all-digital (source-to-eye) display wasrealized in 1987 with the invention ofthe DLP device at Texas Instruments.The Digital Mirror Device (DMD) is anarray of fast digital micromirrors,monolithically integrated onto andcontrolled by a memory chip. DigitalLight Processing (DLP) systems presentbright, seamless images to the eye,with the characteristics that we havecome to expect from digital technology,namely high image fidelity and stability.DLP-based displays exhibit no lag orsmearing of the image from one digitalframe to the next. The first DLP-basedprojection display products wereintroduced to the market in April 1996.

DISPLAY OPERATIONAs shown in Figure 8, each digital lightswitch of the DMD is an aluminummicromirror, 16 micrometer square, thatcan reflect light in one of two directions,depending on the state of an underlyingmemory cell. The mirror is rotated byelectrostatic attraction produced byvoltage differences developed acrossan air gap between the mirror and thememory cell. The mirror rotation islimited by mechanical stops to ±10degrees. With the DLP cell in the onstate, the mirror rotates to +10 degrees.With the DLP cell in the off state, themirror rotates 10 degrees.

When we combine the DLP device witha suitable light source and projectionoptics, the mirror reflects incident lighteither into or out of the projection lensby a simple beam-steering action. Thus,the on state of the mirror appears brightand the off state of the mirror appearsdark. The fast switching time of themirrors enables the use of a pulse widthmodulation technique for the productionof gray scale. The DLP device acceptselectrical words representing gray levelsof brightness at its input and then outputsdigital light as optical words to the eye.Because of the short pulse duration,the optical words are interpreted by theeye of the observer as analog lightcontaining up to one billion or morecolor and gray scale combinations perpixel. Furthermore, the fast switchingtime results in a lag free image. Digitallight is accurate because the light pulsedurations are determined by the precisedivision of time. The resulting projectedimage faithfully reproduces the originalsource material and the image is stable,independent of temperature or age ofthe projector, and is free from photodegradation effects, even up tobrightness levels necessary forelectronic cinema. The tiny gapsbetween the mirrors diminishobjectionable pixilation effects andcreate a seamless image that has longbeen the hallmark of DMD-basedprojection displays.

Fig. 9 One chip Projection System

DISPLAY CONFIGURATIONSThree configurations of DLP projectionsystems are currently beingmanufactured, differentiated by thenumber of chip, one, two, or three.First Series DLP uses a one chipconfiguration. Figure 9 shows asimplified example of a one-chip system.The configuration choice depends onthe intended market application and isbased on a tradeoff between light

utilization efficiency, brightness, powerdissipation, lamp technology, weight,volume, and cost. The single-chipprojector is self-converged, lower in cost,and permits the very lightest portabledesigns.Graphics, text and artwork courtesy of Texas Instruments.Digital Light Processing, DLP are registered trademarks ofTexas Instruments.

Driver CBA

Light Tunnel

DLP Device

Fig. 10 DLP Light Engine

Fig. 11 DLP Light Engine

Light Engine OverviewThe imager in the light engine is a singleDLP device with an array of 1280x720(921,600) micro-mirrors. Another partof the light engine is the color wheel thatis used to sequentially display red,green, and blue images on the imager.The light engine contains a Driver circuitboard that contains the TI chipset.

Alignment information is stored in aEEPROM located on the engine driverboard. These alignments include colortemperature and color wheel index.

Two cooling fans are located in the lightengine, one for the DMD device andone for UHP (Ultra High Pressure) lamp.

Color Wheel Operation

The color wheel contains 6 segments; 2reds, 2 greens, and 2 blues and spins ata rate of 120Hz (7200 RPM). Thismeans for every incoming 60Hz framefrom the chassis, 12 color sub framesare displayed on the imager at a rate of720Hz.

Fig. 12 DLP Light Engine Block Diagram

Inputs to Light Engine

The inputs to the light engine includethe Power Supplies (+2.5VR, +3.3VR,+12VR, +5VR).

The Power_Good signal is an activehigh signal which indicates that all runsupplies are at an acceptable level.This signal is used to give the engine anadvance warning that the supplies aregoing down in case of an AC loss. ThePower_Good signal must go low aminimum of 1ms prior to the suppliesdropping so that the light engineprocessing circuitry can park the mirrorsin a reliable state prior to power loss.Another input is the DVI encoded videofrom the formatter circuit. Control of thelight engine is accomplished via the I2CRun 2 data bus from the DM2CRmodule.

Cooling fans

The lamp and DLP device cooling fansare powered by the light engine driverboard. The DLP device fan speed isvaried depending on the reading atemperature sensor in the light enginedriver module. The temperature ismonitored by the DM2CR by reading atemperature sensor via the I2C bus. Atnormal room temperature the fanvoltage should be about 8V, but willrise to a maximum of 12V as the roomtemperature rises. The lamp fan runsat 8 Volts at all times. Fan rotation ismonitored by DM2CR. When a stoppedor locked fan is detected the DM2CRshuts down the instrument down andfan error codes are logged.

LightEngine

DLPDriverCBA

LightEngine

Housing

CWMotor

Temp Sensor

Mtr1Mtr2Mtr3

CW Index H

CW Index L

Lamp Fan

DMDFan

FanDrive

LVDS_B

LVDS_A

Fan PWM

Lamp_en

ThermalCut OffSwitch

DLPProcessing

Pwr_Good+5VR+12VR+3.3VR+2.5VR

Fan Detect

I C_Clk2

I C_Dat2

RDRAM

FLASHEEPROM

Bus ExpDVI Rx

DDP1010

J1

J2

J7

J8

P1

J4

To Lamp Pwr Supply

LampOnJ5

FromLampPwrSupply

Tx0Tx1Tx2TxC

DVI VideoFrom Formatter CBA

J3Thermal Cut Off

DLPDevice

(RUN 2 Bus)

Power

Power_Good

TI_Reset

Ballast_Lamp_en

Ballast_Txd_Lamplit

User_Lamplit

DDP1010 State

DMD State

Reset Init CW Init Lamp Reset Init I2C I2C Delay UnparkMirrors

Running

Mirrors Parked Display Image

Fig. 13 DLP Light Engine Startup Sequence

Light Engine Start upFigure 13 shows the start-up sequenceof the light engine. The light enginetakes approximately 10 seconds to powerup and display a picture after the powerbutton is pressed. It takes nearly 25seconds for the lamp to increase to fullbrightness.

1. The ACIN run suppl ies(5VR,9VR,12VR) and the Power_Good areturned on. These are fed from theACIN board (P24702) to the formatterboard (BP503). The formatter boardgenerates 3.3VR and routes it alongwith the other supplies on connectorBW902 to the light engine connectorP1. These voltages can be measuredat connector BW902 on the formatterboard: Pin 2 (5VR), Pin 3(Power_Good ~ 3.3Vdc), Pin 5(2.5VR), Pin 9 (3.3VR) and Pin 12(12VR). The DM2CR micro thenbrings the DLP processing circuitryout of reset by writing to the lightengine bus expander IC.

2. Once the DLP processing circuitry isbrought out of reset the processingcircuit micro, DDP1010, on the lightengine driver circuit begins

initialization. The first step is to startthe color wheel spinning. This takesapproximately 3 seconds until thecolor wheel locks up at (7200 RPM).

3. When the DLP processing circuitrysenses the color wheel is spinning, itwill strike the lamp by activating thelamp_en signal to the lamp ballastboard. This is a DC voltage and canbe measured on connector J4 (4) onthe Light Engine driver board. In thestandby mode the voltage is ~0 volts.After the color wheel is spinning thevoltage increases to 5 VDC and thebulb begins to light. With the screenlit the voltage will be 2.5 ~ 3.25 VDC.

4. The DM2CR microprocessor polls theBallast_lamplit input pin signal fromthe light ballast via connector J4(1) todetermine if the bulb has beensuccessfully lit. When the microdetects this signal, it then “passes” italong to the DLP processing circuitryby outputting the User_Lamplit signal.

5. When the DLP processing circuitrydetects the User_Lamplit signal, itdoes a soft reset and is ready toreceive I2C commands from theDM2CR and to display video.

Lamp Start-up-Cool DownWhen the set is tuned off via the powerbutton or remote, the unit displays a bluescreen and slowly dims the screen leavingthe lamp and power supplies on for about20 seconds. During this 20 secondinterval the user can turn the set back onimmediately in case he inadvertently shutit off (refer to Fig. 14). After the 20second interval, the lamp and DLP fanare turned off but the run supplies andlamp fan are left on for an additional 2minutes to allow for lamp cool down.

After the lamp is turned off, the user willnot be allowed to turn the set on for 30seconds. If he tries to the power LED willflash which indicates the lamp is in cooldown mode.

UHP (Ultra High Pressure) lamps can bedamaged during a “hot strike” (when thelamp is turned on before it has had achance to cool down from the previouson time). Because of this issue thefollowing sequence is used to power upand shut down the lamp.

Sights & Sounds of Startup1. AC Plug In:

A. Relay K24251 located on the power supply board, ACIN, clicks indicatingthat standby supplies, +/-5Vdc, +12Vdc, +6Vdc, +33Vdc, are up and running.

B. Power LED and Porch Light illuminate: DM2CR is booting up, this takesapproximately 30-45 seconds.

C. Power LED Off: DM2CR has successfully booted up and is in standby mode.2. Press Power On: Power LED turns on and the DM2CR relay clicks.3. The run power supplies are turned on (5VR, 9VR,12VR on the ACIN board and the

3.3VR from the formatter board). Power_Good line goes high when supplies arestable.

4. The Color Wheel starts, taking approximately 3 seconds before it locks in @ 7200RPM. When the Color Wheel is spinning, the Lamp strikes. The lamp becomesbrighter and brighter taking approximately 10-20 seconds for the lamp to reach fullbrightness.

5. The Lamp and DLP fans turns On: The DM2 micro reads the Ballast_lamplit inputpin. This signal comes from the ballast and indicates that the lamp has startedsuccessfully. When the micro detects this signal, it then “passes” it along to theDDP1010 by writing the User_Lamplit signal. The fans are turned on by theDDP1010 by it writing the “high pulse width” bytes to PWM0 (Lamp fan) and PWM1(DLP fan).

BW902-Formatter P1-Light Engine Description Pin # Voltage Pin # Ground 1 0 12 5 VR 2 5 Vdc 11 Power Good 3 3.3 Vdc 10 Ground 4 0 9 2.5VR 5 2.5Vdc 8 2.5VR 6 2.5Vdc 7 Ground 7 0 6 Ground 8 0 5 3.3VR 9 3.3Vdc 4 3.3VR 10 3.3Vdc 3 Ground 11 0 2 12VR 12 12Vdc 1

J4 Connector-Light Engine Pin Description VDC

off VDC

At turn-on VDC run

1 Ballast Lamp Lit L H (5v) L 2 Ground L 0 0 3 5VR 0 5 5 4 Ballast Enable Line 0 5 2.5~3.25

5 5VR 0 5 5

Fig. 14 DLP Lamp Startup-Cooldown

PowerReturn

30 SecTimer **

20 SecTimer *

** If Power On is pressed during the 30 sec Cool timer, the Power LED blinks.

* If Power On is pressed during the 20 sec Lamp Standby timer, the set returns to normal operation immediately.

Cool Down'Lamp Off-Fans On'

Video 10 SecFull Bright 25 Sec

Display Mode Lamp Standby

TV & LampOff

(Fans Off)

30 SecTimer

PowerLoss

Fans Off

PowerOn

Lamp OnVideo On

Lamp On-Vid/Audio Mute

Pwr On

Power Off

≈≈

≈≈ ≈

2 MinTimer

Power On: The UHP (Ultra HighPressure) lamp can be damaged or it’slife span shortened by turning it on whilehot (a hot strike). For this reason, multipleprotective measures have been taken inthe form of multiple timers. When thePower button on the front panel or theremote control is pressed, the TV & theLamp turns on immediately.

Display Mode: Both the lamp and thevideo and audio are turned on immediatelywhen the power button is pressed. Whenthe unit is powered on, video can be seenin approximately 10 seconds, howeverfull brightness takes approximately 25-30 seconds due to lamp warm-up time.

Power Return: In the case of a poweroutage, when the power returns a 30second timer is activated. The unit willnot turn back on before the 30 secondshave timed out because the systemdoesn’t know if power was lost for 10seconds or 10 minutes, therefore thesystem must ensure that the lamp hascooled before turning on.

Lamp Standby: Whenever the unit ispowered off, video is immediately ‘blanked’but the lamp remains on. A 20 secondtimer is activated. This is done in case thecustomer accidentally turned off the unit orhas changed their mind. If power on ispressed before the 20 second timer runsout, video is immediately unblanked.

Lamp Cool-Down: After the standbytimer expires (20 seconds), the lamp isturned off and enters the Cool-Downmode. When the lamp is turned off twotimers are activated. The first is a 30 sec.timer that prevents the instrument frombeing turned on until the cool-down timerhas expired. After 30 seconds, the unitcan be powered up again. If the PowerOn is pressed before the 30 second cooldown timer has expired, the Power LEDblinks slowly. It’s important to realizethat this is normal and is done to protectthe lamp. After the 30 seconds cooldown timer expires the unit will startnormally. The second is a two minutetimer that keeps the lamp fan running tocool the lamp if the unit is left off.

When the set is tuned off via the powerbutton or remote, the unit displays a bluescreen and slowly dims the screen leavingthe lamp and power supplies on for about20 seconds. During this 20 secondinterval the user can turn the set back onimmediately in case it was inadvertentlyshut off. After the 20 second interval, thelamp is turned off but the run suppliesand lamp fan are left on for an additional2 minutes to allow for lamp cool down.After the lamp is turned off, the user willnot be allowed to turn the set on for 30seconds. Attempting to power on theinstrument will cause the LED to flashindicating the lamp is in cool down mode.

AC In CBA Overview

The standby and main (run) powersupplies are located on the AC In circuitboard. The standby supply is onwhenever the unit has 120V AC applied.A voltage doubler is also located on theAC In CBA. This doubler produces thehigh voltage that is required for the lamppower supply. The relay that routes theAC to the doubler is the relay that isheard when the unit is plugged in. Therelay is operated by routing the +12VSvoltage through the lamp door switch.This is a safety feature that shuts off the

lamp and supply when the customeraccessible lamp door is opened.

The outputs of the standby supplyincludes +/- 21V for the Audio circuitboard, +6VS, +5VS, -5VS, +12VS and+33VS to the DM2CR. A power fail(PwrFail) signal is generated by thestandby supply and is routed to theDM2CR is the event that AC is lost orthat supply malfunctions. The PwrFailsignal is an early warning for the DM2CRto perform emergency shutdownhousekeeping procedures.

Fig. 15 AC In CBA Block Diagram

AC InCBA

LampDoor

Switch

StandbyPower Supply

Main (Run)Power Supply

Bridge

DoublerRelay

+12VS

Pwr_

Goo

d+5

VR+1

2VR

+9VR

SW

+12V

S

+6VS

+5VR

+5VS

SW

-5VS

+12V

R

+33V

SPw

rFai

l

On/Off

13 7

+21V

-21VJ24603

120VAC

5

13

J24604

J24605 J2460216

12

4 14J24702

J24251

J24252

21

J13101

21

6 4 2 8 1314To DM2CR To

AV In/OutCBA

ToFormatter/Driver

CBA

+6VSTo

DM2CR

ToAudioCBA

ToLamp

PwrSupply

On/

Off

The main (run) supply provides the+5VR and the +12VR that is required bythe A/V In/Out circuit board. The +9VR,+12VR, +5VR and the Power_Goodsignal are generated by the run supply.The Power_Good signal informs thelight engine (via the formatter CBA) that

all run voltages are nominal. This signalgoes low if the run supply turns off. Thisallows the light engine to performpreshutdown house keeping functions.The run supply is turn on via the On/Offsignal from the DM2CDR (via connectorJ24605-13).

Fig. 17 AC In CBA Service Position

Fig. 16 AC In CBA

Standby & RunPower Supply CBA

(2H, 2.14H)

J22105

OSD

VertHorz2H Pr

2H Pb

2H Y

RecOut

1H CVFilter/BufferSD Video

TL851

D1_Out

GPIP

Buffers

HD VideoFilters &

Pr_OUT2Pb_OUT2C_OUT2Y_VOUT2

Pr_OUT1Pb_OUT1

C_OUT1Y_VOUT1

J22104

DM2CR

NTSCPip Tuner

ATSC Tuner& NTSC Main

Tuner

FSW

DEINT_VDEINT_H

DEINT_PrDEINT_PbDEINT_Y

PIP_CVMain CV31

2923

2725

12181416

1257913

U23501

R-OutL-Out

U11603Audio AUD_L

SWITCH_RSWITCH_LAUD_R

4.5MHzBPF

VSBDecoder

1

35

7

J22104

To/FromA/V In

Out CBAToFormatterCBA

To/FromAV InOut CBA

DigitalVideo

VideoDecoder

9 Bit

U22500

ATSCNTSC Audio

NTSC

SWITCH &SPLITTERAnt A

Ant B

ATSCAudio

256 QAMDecoder

DTVDecoder

(2)1394

FirewireInput

Fig. 18 DM2CR Module Block Diagram

DM2CRCR Module Overview

The DM2CR module has 2 RF inputslabeled ANTENNA A and B. Antenna Ais input to a Tuner/IF module thatcontains a tuner section and dual IFsection. The tuner is capable ofprocessing both digital and analog RFsignals (ATSC & NTSC) from eitherterrestrial or cable sources. The tuneris a single conversion, electronicallyaligned tuner with improved cross-modulation, UHF image rejection, andlocal oscillator phase noise performanceover previous tuners. Performance istailored to handle the predicted signalenvironment during transition to digitalterrestrial television (HDTV) service,256QAM digital cable, as well as

providing “cable ready” NTSCperformance as specified by the FCC.Antenna B input is the PIP tuner and isNTSC only.

The DM2CR has 2 DTV Link connectorswhich are a compressed digital videoinputs offering an IEEE-1394 type videoconnection for consumer devices suchas satellite receivers, cable receivers,and digital recorders that meet thespecifications for DTV Link. DTV Link isbetter known as 1394 or FireWire fordigital televisions. Audio and videoinformation is carried on a single wire.

Fig. 19 DM2CR Module

DM2CR

A/V In/Out CB

Audio C

DM2CR

The DM2CR module contains a GPIPIC (U23501) and performs the following:

• NTSC processing

• ATSC decoding

• Process YPrPb

• Process S-Video

• Decode Y+C

• Adaptive combing ofcomposite video

• Performs PIP function

• Recover Teletext, closedcaption and Gemstar data

• Digitize all 1H video inputs

• Outputs digitized YPrPb

TL851 is an video decoder, displayprocessor with scan rate converter. For1H video inputs, the output will be up-converted to 2H 480p and the displaywill be locked to the incoming video.The TL851 recovers HDTV video signalsin YPbPr format from digital bit streamsoutput from the VSB (visidual side band)decoder and processes them for display.The HD output will be YPrPb, either1080i, for HD inputs (1080i, 1080p, or720p) or 1920x480p for SD (standarddefinition) inputs. The TL851 alsogenerates the text and graphics for theOSD (on-screen display). The TL851outputs two types of video, Analog SDvideo (2H NTSC), Analog ATSC video(YPrPb) along with the appropriateaudio. The HD video output providedto the chassis consists of YPrPb,Horizontal and Vertical sync signals.

Fig. 20 Formatter Block Diagram

Formatter Module Overview

The formatter circuit board is responsiblefor converting the analog video fromeither the DM2CR and analog inputsfrom the A/V In/Out circuit board into aformat that is compatible with the lightengine. DC power for the formattercircuit board as well as the light engineis supplied by the main (run) powersupply located on the AC In CBA. Thesesupplies include +5VR, +12VR, +3.3VRand +2.5VR. A Pwr_Good from the runsupply is routed through the formatterCBA. This signal tells the light enginethat supplies are at nominal value. Allfunctions and circuits on the formattercircuit board are monitored andcontrolled by the system control

microcomputer in the DM2CR. This isaccomplished via the RUN 2 I2C clockand data bus. The same I2C bus is alsorouted through the formatter board tothe light engine.

The 2H and 2.14H external inputs alongwith sync are applied to connectorBV402. Next it is applied to the BEP(back end processor) for processinginto an analog RGB signal. The NTSCand the ATSC analog video signal (2H)from the DM2CR is applied to connectorBV401. The video is also applied toIV401 for conversion to RGB. The RGBoutput from IV401 is then applied to theAnalog to Digital (A/D) converter IW601.

V-SyncH-Sync

YPrPb

Formatter CBA

Dual DC-DC3.3V/2.5V

Pwr_Good

+5VR+12VR+3.3VR+2.5VR

BEPA/D Lun-IC

FPGA

EEPROM

ChromaDRAM

RedGreen

Blue

H-Sync

V-SyncV-SyncH-SyncFSW

YPrPb

Red

Grn8

8

8

LumaDRAM

Vert

Tx0

Tx1

Tx2

TxC

A/D Clk

+9VR

Blue

DVIOutput

DigitalRGB

(720P)IW701IV401

IW601

IW801DVITx

IW901

BV401

BV402

BW901

BW902

IW705/6/7IW702/3/4

BP503

2

4 5

7

9

3

12

12

146

18

23

2

68

9

10

5

2

15387

2222

48bit Vidto

24bit Vid720P

IW501

1 38 13

ToDLP

DriverCBA

ToDLP

DriverCBA

From AC In CBA

FromA/V In/Out

CBA(Ext 2H &

2.14H)

I2C_DAT

I2C_CLK

FromDM2CR

(2H)

InternalAnalog

ATSC &NTSC

(RUN 2)(RUN 2)

24bitVid

720P

Fig. 21 Typical Formatter Input/Output Waveforms

It’s output is 8 bit digital red, green andblue video data stream. This digitalvideo is next applied to the Lun-IC,IW701. IW701 converts the threeseparate digital video streams to a 48bit 720P digital RGB signal. This 48 bitsignal is then processed by the FPGAIC IW801. The output from IW801 is a24 bit 720P signal that the DVItransmitter can use. The DVI transmitterIW901 converts the 24 bit signal to theDVI format. These outputs exit theformatter circuit board via connector

BW901 and are sent to the light engine’sDVI receiver. The DVI transmitter andreceiver incorporate HDCP (HighBandwidth Digital Content Protection.The HDCP encryption format covers allhigh bandwidth applications such ascomputers, DVD players and HDTV(ATSC). Whenever the connectorBW901 is disconnected the DVItransmitter turns off. This is done toprotects against and prevents any videopirating. Refer to "Service Tips" formethod of checking (scope) the DVIoutput of the Formatter CBA.

Pr PbY

DVI Video Waveform

BV401-14 BV401-10 BV401-12

BV901-18/9/2/23

Audio Switching Overview

The A/V In/Out circuit board is brokendown into it’s two (2) basic functions;these are audio switching and videoswitching. The audio switching circuitryfor the external audio inputs are locatedon the A/V In/Out module. Sourceselection for DVI audio and the analogexternal audio inputs including FAVaudio jacks is provided by the audioswitching IC U26901. The audioswitching is controlled via the I2C RUN1 bus from the DM2CR module. Alsothe DM2CR module performs

demodulation of the audio from off-airsources (NTSC and ATSC). These offair baseband audio sources from theDM2CR is routed through the A/V In/Out circuit board to the Audio board forfinal processing. The external audioinput jacks are located on the A/V In/Out circuit board. L/R inputs includeaudio from Aux1, Aux2, Aux3, Aux4and DVI. The Front Audio Video (FAV)panel has one set of L/R audio jacksthat is applied to the switching IC

Fig. 22 Audio Switching Block Diagram

U26901

J26903

SEL_

AUD

_L

SWIT

CH

_R

59

61

J26901

SWIT

CH

_L

SEL

_AU

D_R

3735

179

7270

Aux R Audio (X4)Aux L Audio (X4)

DVI_1 AUDRDVI_1 AUDL

J26905

2

5

7

3

1012

1357

A/V InputOutput CBA

FAV AUD IN RFAV AUD IN L

FAV H-P LFAV H-P R

AUD_L

AUD_R

To/From DM2CR

FAV Headphone RFAV Headphone L

To/FromAudioCBA

J26904

4

2

6FromAC InCBA

+12VR

+5VR

+12VS

21 22

9724

Aud/VidSwitch

42

43I2C_DATI2C_CLK

I2 C_D

AT

I2 C_C

LK

(RUN 1)

(RUN 1)

(RUN 1)

(RUN 1)

Fig. 23 A/V In/Out CBA Service Position

U26901. The selected baseband audiosignal output from U26901 is loopedthrough the DM2CR module and backto the A/V In/Out CBA where it then sentto the audio processing circuit board.The FAV Headphone L/R audio fromthe Audio board is simply routed throughthe A/V In/Out board to the FAV. Whenthe DVI audio input is selected it is

routed to the DM2CR for decoding intoanalog audio and is then routed backthrough the I/V In/Out CBA and on tothe Audio circuit board for finalprocessing. Power supplies for the A/VIn/Out board include the +12VR, +12VSand +5Vr and is supplied by the AC InCBA.

Fig. 24 Audio Processing Block Diagram

AUDIO CBA

J11501

5

7

2

3

10

12

FAV_Headphone_R

FAV_Headphone_L

TRUSUR-ROUND

U11701

15 16

10

9

R_AUD

L_AUD

PA_R

PA_L

PowerAmp

SW11902

7

11

8 6

711

93

U11501

BUSEXPDR

3

411121315

FAV_SPKR_MUTESUB_CONTTRUSPA_MUTE

U11801AUDIO

TR

TL

MDL

MDR

CDR

CDL

VOLEQUBAL

42

43

1

44

41

40

2019

26

28

CTL

AMP

U1155175

12

24

U11490

6

7

3

1

AudioOUT

7

1U11460

3

5

R_OUT

L_OUT

R

L

U11702

7

13

5AMP

LR

IntSpkr

ExtSpkr

CntrSpkr

SubWoofer

To/FromA/V InputOutput

CBA

I2C_DAT

I2C_CLK

I2 C_D

AT

I2 C_C

LK

I2C(R

UN

1)

(RU

N 1

)

(RUN 1)

(RUN 1)

Audio Processing OverviewAll of the audio circuitry is located onthree assemblies. The audio switchingand the audio jacks are located on theA/V In/Out CBA. The DM2CR moduleperforms demodulation of the audiofrom off-air sources (NTSC and ATSC).The Audio circuit board performs thebase-band audio processing such asvolume control, graphic equalizer,subwoofer output, and poweramplification along with speakerswitching. The audio circuit board alsocontains the SRS and Tru Surroundfeature processing circuitry.

The analog audio from the DM2CR isrouted back to the A/V IN/OUT boardwhere it is cabled to the Audio board.There it is input to a differential amplifier,U11551. This amp is used to eliminateground loops caused by the long cablerouting. The output of U11551 is fed to

the input of the SRS/FOCUS processingblocks, U11701 & U11702, and directlyto one input of the audio processor,U11801. The processor selects one ofthree inputs, the direct signal (no SRS)from U11551, Regular SRS orTruSurround from U11701 or SRS/FOCUS from a combination of U11701and U11702.

The analog input for the SRS/TruSurround circuit is taken off theoutput of the amplifier, U11551. Theseproduce two signals which are sent toinputs on the audio processing IC,U11801, along with the direct signal.The processor IC selects which inputsignal is required for the customer-selected mode. The first block,composed of IC U11701, performseither Regular SRS or TruSurround.The second block, composed of ICU11702 performs “Focus” mode.

Fig. 25 Audio Processing CBA Service Position

Regular SRS mode is selected by usingthe midpoint of the output of the SRSblock and placing it in Regular mode.Focus is always on but its output isn’tselected. SRS Focus mode iscomposed of Regular SRS plus Focus.The SRS block is placed in Regularmode and the Focus output is alsoselected.

TruSurround mode is selected byplacing the SRS block in TruSurroundmode and using its output. The audioprocessor (U11801) has three inputsignals applied to the selector, directaudio from U11551, SRS from U11701and Focus from U11702. After thesignal is selected in the processor,volume control is applied. The DLPsystem does not have a separate tonecontrol function but a 7-band graphicequalizer is available. After theequalizer, L and R signals are summedand split off to form two signal paths.The summation stage output signalsare run through a highpass filter for themain channels, and a matching lowpassfilter for the subwoofer. The subwoofervolume is therefore controlled by themain volume, but a fader is provided inthe subwoofer path (accessed by the“Subwoofer Level” menu) so that it’slevel may be adjusted relative to the

main channels. Three analog outputsfrom the processor provide the Left,Right, and subwoofer signals.

The PA_L and PA_R audio signals fromthe audio processor are routed to threecircuit areas, first to U11460, whichdrives the HiFi Output jacks located onthe Audio module, second to the mainpower amplifier, U11901 and third tothe headphone amplifier, U11490.

The output of U11490 is routed throughthe A/V IN/OUT module to theheadphone jack which is located on theFAV module. The subwoofer outputfrom the processor is routed toconnector, J11801. The subwooferamplifier module plugs into thisconnector. Also present on theconnector are two control lines thatsense the presence of the subwooferoption and turn the amplifier and powersupply off and on.

As mentioned previously the Audiomodule also contains a busexpander,11501, that is connected tothe system microcomputer inDM2CRvia the I2C bus. The bus expander onthe Audio Module uses its ports to selectthe following functions, FAV SpeakerMute, SubWoofer Control, SubWooferDetect and Power Amp Mute.

49

505254575860

62

J26903

J26901

Switch1H Video

U26901

Pr_OUT2

Pb_OUT2C_OUT2

Y_VOUT2

Pr_OUT1

Pb_OUT1

C_OUT1Y_VOUT1

7168

30

322823

862

75

Main CV312923

2725

12181416

ToDM2CR

(External 2H& 2.14H)

J28901

5

4

2

3

1

343335

SwitchVideo

2HU28901

2322252627

HD_YHD_PBHD_PRHD_HHD_V1

2468To

FormatterCBA

8384

64

6534 Combed C

Combed Y

Sel. CVU16301

FAV CFAV Y

FAV CV

Aux Pb (X2)Aux Pr (X2)Aux Y (X2)

Aux Y/C (X2)

Aux CV (X4)

5/6

U22201

J22201

A/V Input/Output CBA

19

18

31

26

23

DVI_VSYNC

DVI_HSYNC

DVI_BDVI_G

DVI_R

TXC (+/-)

DVI ReceiverDVI

Input48/49RX2 (+/-)

51/52RX1 (+/-)

2/3RX0 (+/-)

1/2

9/10

17/18

23/24

FrameComb

93

30 31 15 14

4243I C_Dat2

I C_Clk2

I C_Dat2I C_Clk2 I C_Dat2I C_Clk2

46

47

I C_Dat2

I C_Clk2

6

10

12

(RUN 1)(RUN 1)

(RUN 1) (RUN 1)

(RUN 1)

Fig. 26 Video Switching Block Diagram

Video Switching OverviewThe A/V In/Out circuit board is brokendown into it’s two (2) basic functions,video switching and audio switching.The A/V In/Out circuit board has externalinput jacks that accepts four CompositeVideo (CV), two S-Video, twocomponent video (YPrPb) and one DVIdigital video. The video inputs on the A/V In/Out board can be either 1H NTSC,2H NTSC or 2.14H NTSC. The Front A/V (FAV) panel has one component videoinput as well as a S-Video connectorwhich is routed through the A/V In/OutCBA.

The A/V In/Out CBA also has a DVIinput. DVI (Digital Video Interface)combined with HDCP (Hi-BandwidthDigital Copy Protection) creates a newuncompressed protected digitalinterface (called DVI-HDTV) for hookingan HD Monitor to a Video Source (forexample, a set-top box or DVD player).This interface is not only uncompressed,but it is also high speed (3.96 GB/s)making it a perfect solution when thebest picture quality and minimal signalloss are required.

Fig. 27 A/V In/Out CBA Service Position

The DVI receiver IC U22201 decodesthe DVI video and then outputs RGBwith horizontal and vertical sync. Thissignal is then applied to U28901 forswitching and matrix conversion toYPrPb. This YPrPb video is then routeddirectly to the Formatter circuit board.The switching for NTSC/1H sources(composite, S-Video, and component)is provided by IC U26901 for rear inputjacks and the FAV jacks. All videoswitching IC’s are monitored andcontrolled via the I2C bus.

A frame comb filter is provided tooptimally comb any composite sourceinto an S-Video (Y/C) output sourcewhich is routed back into U26901. Allcomposite and luma inputs to U26901have sync detectors that are readablevia the I2C bus which allows for automaticsource detection. Source selection forHD/2H/2.14H sources (component andDVI) are provided for rear inputs (2component and 1 DVI) with the ICU28901. This IC is a 4-input videoswitch with signal format detection.

Fig. 28 AC System Control Block Diagram

DM2CR

Sys ConU13100

A/V In/Out AudioProcessing

FormatterLight

EngineJ22105

J22104

J26903 J26905 J11501

BV401 BW901

J5

Clk

Dat

Run1

Run21011

45

23

67

2021

Clk

Dat

2021 3

2I2C

I2CI 2C

I2C

System Control Overview

The system control microcomputer for the HDLP50W151 is IC U13100 and islocated in the DM2CR. The system control micro is responsible for monitoring andcontrolling the A/V In/Out CBA, the Audio Processing CBA, the Formatter circuitboard and the Light Engine. There are two busses, the Run1 buss and the Run2buss. The Run1 buss controls the A/V In/Out CBA and the Audio CBA. The Run2buss controls the Formatter and Light Engine. It’s important to realize that if theDM2CR does not see the Formatter and/or Light Engine the DM2CR goes into whatis referred to as a “Stand Alone Mode”. In this mode the DM2CR will output videoeven if the Formatter and/or the Light Engine has failed. If the Run2 I2C buss ispulled low by a failed light engine, the I2C buss will return on the formatter circuitboard if connector BW901 is disconnected. If disconnecting BW901 does not returnI2C operation then the formatter circuit board is responsible for pulling down the I2Cbuss. The photo below indicates a convenient point to check the I2C buss.

Fig. 29 Formatter I2C Test Point Location

Service Tips.

1. If light engine has entered ‘cool down mode’ (30 sec timer), Power LED blinksslowly 3 times if power on button is pressed. Unit will turn on after timer hasexpired. See “Lamp Startup/Shutdown Flowchart”.

2. When AC is applied, instrument will not respond for 50 to 60 seconds. TheDM2CR module must boot-up and perform internal diagnostic.

3. The lamp cooling fan and the DLP device fan operates whenever the unit is turnedon. If failure in fan circuit occurs, unit starts up normally (with video) then shutsdown.

4. Before replacing light engine, always confirm picture quality issues by accessingthe test patterns in the service menu 80. All patterns accept the checker boardare generated by the formatter CBA. The checker board is generated by the lightengine.

5. The “Safety Interlock Switch” must bypassed whenever the rear cabinet isremoved for service (see photo below). The connector can jumped or the switchcan be taped closed.

Jumper with alligator clip

Service Menus & DiagnosticsService menus and diagnostics procedure are critical to effectively diagnose failuresand problems in the instrument. The following is a summary of the HDLP50W151service menus.

Service Menu (V:76): Turn instrument on, then press and hold Channel Down &Menu simultaneously. Next, select Service Alignment in menu, then volume Up toV:76 then Channel Up and Down to desired adjustment. After selecting adjustment,Volume Up/Down changes value of adjustment. Press off to exit.

Test Patterns (V:80): Enter service menu and volume up to V:80. Channel up tothe patterns. The skip button toggles the pattern and the menu button togglesbetween the pattern and normal video. To exit, press the off button.

Usage Clock (V:90): Enter service menu and volume up to V:90. Channel up forusage clock. Press off to exit.

Error Codes (V:50): Enter service menu and volume up to V:50. Channel upfor first failure code. Channel up for next of 8 failure codes. Pressing clearremoves error code. Last error is most recent failure code. I.E: if four (4) errorsare listed, four is the most recent. To exit, press the off button.

6. To scope the DVI output of the formatter CBA see test points in photo below. Donot disconnect the DVI connector or the transmitter on Formatter will turn off. Seepage 25 of training manual.

Use formatter case as ground Typical Waveform

DLP Light EngineThe following information describes the normalstart-up and cool down sequence of the DLP LightEngine. Understanding how the light engine startsand stops will help in troubleshooting the instrument.

Turn-on Sequence1. AC Plug In:

A. Relay K24251 located on the ACIN boardclicks indicating that standby supplies, +/-5VS, +6VS +33VS, are up and the 300 Vsupply is present at connector X1 on theLight Ballast power supply.

B. Power LED and Porch Light illuminate:DM2CR software is booting up, this takesapproximately 30-45 seconds.

C. Power LED Off: DM2CR has successfullybooted up and is in standby mode.

2. Press Power On: Power LED turns on and theDM2CR internal relay clicks.

3. The ACIN run supplies are turned on (5VR,9VR,12VR). These are fed from the ACIN board(P24702) to the formatter board (BP503). Theformatter board generates 3.3VR and routes italong with the other run supplies on connectorBW902 to the light engine connector P1. Thesevoltages can be measured at connector BW902 onthe formatter board: Pin 2 (5VR), Pin 3 (Power_Good~ 3.3Vdc), Pin 5 (2.5VR), Pin 9 (3.3VR) and Pin 12(12VR).

4. The Color Wheel starts turning takingapproximately 3 seconds before it locks in @ 7200RPM.

5. The lamp_en signal, 5Vdc, on the Light Enginedriver board J4 (4), is sent to the lamp ballast board

DLP Service & Troubleshootingwhich strikes the lamp. It takes approximately 10-20 seconds for the lamp to reach full brightness.The DC voltage decreases to 2.5 ~ 3.25Vdc.

6. The Lamp and DLP fans turn On. The DM2CRmicro reads the Ballast_lamplit input pin J4 (1) onthe light ballast. This signal comes from the ballastand indicates that the lamp has started successfully.When the DM2CR micro detects this signal, it then“passes” it along to the DDP1010 by writing theUser_Lamplit signal. The fans are turned on byDDP1010 writing the “high pulse width” bytes toPWM0 (Lamp fan) and PWM1 (DLP fan). Theconnectors J1 (1) (Lamp Fan) supplies 8 Vdc tocool the bulb. The DLP fan is connected to J7 (1)(DMD Fan) and supplies 8 ~12 Vdc to operate.

7. Video should now be present on the screen.

BW902-Formatter P1-Light Engine Description Pin # Voltage Pin # Ground 1 0 12 5 VR 2 5 Vdc 11 Power Good 3 3.3 Vdc 10 Ground 4 0 9 2.5VR 5 2.5Vdc 8 2.5VR 6 2.5Vdc 7 Ground 7 0 6 Ground 8 0 5 3.3VR 9 3.3Vdc 4 3.3VR 10 3.3Vdc 3 Ground 11 0 2 12VR 12 12Vdc 1

J4 Connector-Light Engine Pin Description VDC

off VDC

At turn-on VDC run

1 Ballast Lamp Lit L H (5v) L 2 Ground L 0 0 3 5VR 0 5 5 4 Ballast Enable Line 0 5 2.5~3.25

5 5VR 0 5 5

Lamp Cool Down SequenceThere are three timers associated with the cooldown procedure.

1. The first, a standby timer, is engaged when thepower off command is received. The video & audioare muted leaving the power supplies and fans onfor 20 seconds. The screen turns blue and slowlyfades out even though the bulb is still lit. During this20 second interval the user can immediately turnthe set back on.

2. Second after the standby timer expires the lampis turned off and the instrument enters the Cool-Down Mode. When the lamp is turned off, the userwill not be allowed to turn the set on for 30 seconds.During this 30 seconds the run supplies and Lampfan continue to run cooling the lamp. If a Power Oncommand is received before the 30 second cooldown timer has expired, the Power LED will blinkslowly. After this timer expires the unit will startnormally. If there is a power loss after the powerhas been restored this 30 second timer is alsoactivated.

3. The final cooldown timer is a two minute timerthat allows the Lamp fan to continue to run coolingthe lamp after the standby timer expires and thelamp is turned off.

Plug set in.

Do you hear therelay K24251

click ?

Check lamp switchand power supplyvoltages: +/-5,6,33VS and the 300V

supply

Does the powerLED light and then

turn off ?

Suspect Powersupply problem

Suspect DM-2CRmodule problem.

Continue to page37.

NO

YES

YES

1A1B

2A2B 2C

Are the power supplyvoltages supplied to the

DM-2CR Module correct?

NO NO

YES

2D

Important: Before replacing any circuit boards, recover the "Failure” codes using Chipper Check.Also, it’s very important when troubleshooting to accurately identify the symptom inorder to quickly isolate which circuit board or item has failed.

Symptom: Cycles, Shutdown, No Start

DLP Service & Troubleshooting

Press powerbutton.

Does the power LEDlight up or flash and

the relay click ?

Suspect DM2-CRModule

Check connector P1 on the LIghtEngine for the following run

voltages.Pin 2 5 VDC

Pin 3 3.3 VDC Pin 9 3.3 VDC Pin 12 12 VDC

Are theycorrect ?

Suspect powersupply voltagesand Formatter

PCB.

YES

Do you hear thecolor wheel

spinning at leastmomentarily?

YES

Continue to page38

YES

Contact Tech-Linefor furtherassistance

4B

5A

4A

3A

6B6A 6C

Inspect ALL Cablesfor proper seating.Replace any that

appear to have beenstressed.

NO

NO NO

7B 7C7AHookup Chipper

Check and reviewthe error codes.Attempt a Hard-

reboot.

NO NO

Is the lamp being struck(lit)? Refer to note for

measurements

NOTEJ4(4) Connector-Light

Engine Ballast enable line0VDC in Stby, 5VDC at turn-

on, 2.5~ 3.25 in run

If missing, suspectformatter/power

board

NOTEJ4 (1) connector is low

in standby goes H(5VDC) at turn-on thenlow for the run mode

Does the bulbincrease up to full

brightness?

Check J4(1) connectorfor the correct voltage.

Refer to note.

Physically inspect theconnector on the lamp

power supply.

Check on J4(3,5) for 5VR atturn on.

Suspect Lampballast power

supply

Unplug J4 connectorand recheck pin 4 on

the light engine

Suspect Lampballast power

supply

YES

NO

NO

YES

NO

YES

YES

NO

YES

NO

NOPhysically inspect

the Lamp andconnector

Contact Tech-Linefor furtherassistance

NO

8B

9A

8A

9B 9C

9D

10A10B 10C

11A 11B

Contact Tech-Line

Suspect DM-2CRNO

Symptom: Stuck pixels (Black and/or White)

1. The stuck pixel specification is 0 for stuck on (bright) and 2 for stuck off (dark)anywhere on screen.

2. Access the test patterns in the service menu 80. Using either the info. buttonor the skip button on the remote control select the “White Screen” for darkpixels or the “Dark Screen” for bright pixels.

Symptom: Pixelization, Digital Freezing &/or Digital Noise/Artifacts1. Check for a weak ATSC terrestrial (check strength of terrestrial signal) signal cancause pixelization or freezing. An external antenna can dramatically improve ATSCreception. If signal is OK go to next step.

2. Check operation of PIP, NTSC input, ATSC input, OSD and On Screen Guide.

If any of these modes function OK, suspect DM2CR.

3. Go to service menu #80 and toggle to the checkerboard pattern. If the unit displaysthe symptom suspect the Formatter CBA. If the display is OK, suspect DM2CR.

4. Apply 2H YPrPb to an external input. Applying a 2H signal to an external input

bypasses around the DM2CR and is input directly into the Formatter CBA. If problemremains suspect the Formatter CBA. If the problem is not present on the externalinput, suspect the DM2CR.

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Symptom: Instrument starts up normally with video then shutsdown (Instrument runs 20-30secs)

Note: When unit shuts down, Power LED blinks three (3) times. Set restartsautomatically after 20-30 seconds. Unit continues to cycle

1. Suspect failure of lamp cooling fan or DLP device cooling fan.

Symptom: Poor Picture Quality (spots, discoloration, color impurities, etc.)

1. Whenever dealing with picture quality issues, always check the quality of signalsource before servicing unit.

2. Supply a 2H signal into the component inputs and see if the quality of the pictureincreases. If so, suspect a problem in the formatter or DM-2CR.

3. Access the test patterns in the service menu #80. The formatter CBA generatesall patterns except the checkerboard. The light engine generates the checkerboardpattern.

Symptom: Rotated or Offset Picture1. Perform mechanical rotation adjustment of light engine and/or use service menu76 to adjust horizontal and vertical centering.

Symptom: Dead Set, Power LED stays ON when AC is applied(relay will click when the AC is applied)

1. The DM2CR is powered by the standby supply and when AC is first applied theDM2CR goes through a boot up sequence. If the Power LED remains on when ACis applied (should go off in 20-25sec), the DM2CR is not booting up properly. Referto page 17-18 for the startup sequence.

TDLPTRNGMAN1 Printed in USA

Chassis Part Symbol Defective Circuit Symptom solution

ATC311B LW907 Power SupplyReplaced the lamp and the ballast but still no lamp, no dc at pin 5 or 6 of BW902. Found bad connection at LW907. Resolder LW907

ATC311B K24251 Power SupplyThe lamp does not start, the color wheel starts and stops. Found no dc at J24252, relay K24251 open coil.

Replace relay K24251

ATC311 Q24606 Power Supply No audio, no Color in 1H mode. HD worked ok, found one leg of Q24606 broken (12VDC). . replace Q24606

ATC311B J24702 Power SupplyUnit going into shutdown. Three blink error code. Neither fan would run and light would not light. J24702 was found loose going to the formatter board J24702

ATC311B SW13101 Power Supply

The picture would go off after a short period of time. The tuner and audio was still working. Found the AC interlock causing the problem, the little plastic arm appeared to cause. You would hear the color wheel start up and then stop.

Secure interlock switch SW13101.

Chassis Part Symbol Defective Circuit Symptom solution

ATC311B Ligh Engine VideoColor spot on the screen, looking at the lens though the lamp found a piece of plastic. removed the plastic and now it's fine remove plastic

DLP DLP

Page 3-2Page 3-1

Operating ConditionsUnless otherwise noted, the following conditions must beobserved when aligning the TV:1. Chassis must be operated from a 120 VAC isolation trans-

former with line voltage set to 120 VAC.

2. All voltages and waveforms referenced are with respectto Ground

3. A 10X probe must be used for oscilloscope and frequencymeasurements.

TV Service ScreenThe service screen is provided to facilitate instrument align-ment and service adjustments. The service screen is accessedby pressing a two-button combination on the front controlpanel of the instrument.

Using the Front Panel Controls to enter Service Screen

1. Turn on the TV and select the channel that will be usedfor the alignment procedure.

2. With the instrument “ON” press and hold the “Menu”button and then the “CHq” button.

3. The TV set should immediately display the service screenMenu as shown.

Service Screen

Entering the Service Alingment Mode

1. Bring up the Service Screen.

2. Once in the service screen use “CHq” button on the key-board or the down arrow on the remote control to high-light item “2 Service Alignment”.

ALIGNMENT PROCEDURES ALIGNMENT PROCEDURES

Service Alignment Selection

3. Press “Menu” on the keyboard or “OK” on the remotecontrol to activate the Alignment Screen.

Service Alignment Screen

4. Once the Alingment Screen has been activated use the“VOLu” button on the keyboard or remote to adjust thevalue (V:0) to the desired value.

NOTE: When the service mode is accessed, the parameterwill be “0”. Parameter “0” is used to input the security code.The security code is necessary to protect the factory align-ments from inadvertent modification. Attempting to changethe parameter (P) using “CHq” or “CHp” before the propersecurity code has been entered will cause the instrument toexit the service mode. A valid security code is entered (using“VOLt”or “VOLu”).

Security CodesWhen the Service Alignment Screen is first entered, the pa-rameter (P) will come up set at “0”, which corresponds to thesecurity code function.

1. With the parameter (P) set to “0” adjust the value (V)(using “VOLt”or “VOLu”) to “76” for access to theElectrical Alignments.

2. Once the security code has been set, individual align-ments can be accessed by pressing “CHq” or “CHp”changing the parameter (P) number.

3. Once a parameter (P) has been selected for a particularalignment the “VOLt“and “VOLu” buttons can beused to change the value (V) of the alignments selected.Most Electrical adjustments for the DLP instrument mustbe done using Chipper Check.

Error CodesIf certain failures occur in the chassis, error codes will bestored in the chassis EEprom. These error codes can beaccessed by entering the service menu and setting theVALUE to 50. With the VALUE set to 50, pressing theChannel up button will toggle through the 6 error codes.Error code “0” stores the error code for the first failureexperienced by the instrument. Similarly, error code “1”stores the error code for the second failure. Error code “2”stores the error code for the third failure. Error code “3”displays the error code for the most recent failure experi-enced by the instrument. Information is displayed in thefollowing order: Error #, Date, Time, Type, Count, Code.If an Error of the same TYPE is already logged, then theerror will overwrite the existing error of that type and thecount will be increased. Error codes are summarized inFig. 5.

The presence of “Empty” for the error code indicatesthat no failures have occurred since the time the error codeswere reset. The error codes can (and should) be reset to“0” after servicing. Press the clear button to clear the errorcode that is currently being displayed.

1. Enter the Service Menu.

2. Press Volume Up Until V is 50.

3. Press Channel Up to View The First Error.

4. Press Channel Up/Down to View the Next/Previous Er-ror.

5. Press Clear to Clear the Error Code that is Currently Be-ing Displayed.

6. Press Power Off to Return to the P:0 V:50 Display.

7. Press Power Off Again to Return to Normal TV View-ing.

To use the Error Code charts, first look up the “Type” dis-played in the error code (Fig. 4). Then find the Type number(Hex) in the first error code chart (Fig. 5). The descriptioncolumn indicates the general area of the problem and the Detailcolumn gives additional information for some Error Codes.

If the Error Code “Type” is 21 or 22, additional informa-tion is available as shown in Fig. 6. Refer to the last string ofhex characters referred to as Data or Code in Fig. 4. The firsttwo characters hex value of the string refer to the “Chip” in-formation in Fig. 4. The second two characters hex value inthe string refer to the “Bus” information in Fig. 4. The thirdtwo characters hex value in the string refer to the “Details”information in Fig. 4.

If the Error Code “Type” is 41, additional information isavailable as shown in Fig. 5. Refer to the last string of hexcharacters referred to as Data or Code in Fig. 2. Thefirsttwocharacters hex value refer to the “Watchdog” infor-mation in Fig. 5.

0: 0.0.0 0:0:0 Type=21 Count=4 Code = 4002010000000000

Error # Date Time Type Count Code

Fig. 4 Error Code Screen

DLP DLP

21,22,23 Bus 0 5 Bus1 Run 1 Bus2 Run 2 Bus

21,22 Details 1 chip did not acknowledge when was expected to2 some hardware error detected, maybe one of the lines is grounded3 some software error, e.g. not enough memory, or could not acquire the mutex to the driver

Chip Bus Module Comment1E 5 Bus DM2CR Broadcom VSB/QAM34 Run 2 Driver DDP1010 Light Engine Controller40 Run 2 Deflection Deflection DAC42 Run 2 Driver PCF8574 I/O Expander50 5 Bus DM2 VSB54 5 Bus DM2 GPIP54 Run 2 Formatter Lunar IC58 Run 2 Formatter Ortho FPGA5A Run 2 Driver AD524170 Run 2 Formatter DVI Transmitter74 Run 2 Driver DVI Receiver78 Run 1 Audio Audio Bus Expander80 5 Bus DM2 Micronas Audio Processor84 Run 1 A/V Input CXA2151 2H Switch88 Run 2 BEP TA1316 Back End Video Processor88 Run 2 Formatter TA1360 Back End Video Processor8C Run 1 Audio Sound Processor8C Run 2 Deflection TA1317 Deflection Processor8E 5 Bus DM2 Dual IF90 Run 1 A/V Input LA79500 1H A/V Switch92 Run 2 Driver LM75 Digital Temperature Sensor98 Run 2 Formatter AD9883A A/DA0 5 Bus DM2 DM2 Main EEPromA0 Run 2 Deflection Deflection EEProm (lower 256 bytes)A0 Run 2 Formatter Formatter Eeprom (lower 256 bytes)A2 Run 2 Deflection BEP EEProm (upper 256 bytes of Deflection EEProm)A2 Run 2 Formatter Fomatter Eeprom (upper 256 bytes)A4 5 Bus DM2 Tuner EEPromAA Run 2 Service Module MD2 VGA EepromAC Run 2 Driver MD2 Driver Eeprom (lower 256 bytes)AE Run 2 Driver MD2 Driver Eeprom (upper 256 bytes)B0 5 Bus DM2 Link LockB8 5 Bus DM2 Link LockB8 Run 1 A/V Input Frame CombC0 5 Bus DM2 PIP TunerC4 5 Bus DM2 Main Tuner PLLC6 5 Bus DM2 Main Tuner DACDC Run 2 Convergence Convergence Micro

Additional Data Description IIC Errors ("Code")

Additional Data Description (Type 32)This is a count of all system resets since the field code was last cleared. This includes AC dropouts, forced system resets in the code, and resets due to unknown causes.

0 1 2 3 4 5 6 71 Chassis (General) 0 0 0 0 0 0 0 02 Convergence Parity Error 30 0 0 0 0 0 0 0

Loop Fault 31 0 0 0 0 0 0 0Output Inactive 32 0 0 0 0 0 0 0

Bus Fault 33 0 0 0 0 0 0 0Other 34 0 0 0 0 0 0 0I2C 35 0 0 0 0 0 0 0

REF_EE 36 0 0 0 0 0 0 03 Chassis Power Initial Power Fault 10 0 0 0

Other 14 0 0 0Invalid Handle 15 0 0 0

Power Supply Fault 16 0 0 04 Deflection EEProm Corrupt 11 0 0 0 0 0 0 0

POR 12 0 0 0 0 0 0 05 XRP XRP 13 0 0 0 0 0 0 06 Back End Processor BEP POR 0 0 0 0 0 0 0 07 Back End Video Algorithm Error 0 0 0 0 0 0 0 08 DLP Driver Fan Fail 40

Lamp Fail 41No Lamp Strike 42

No Lamp Lit 43Color Wheel 44Lamp Shutoff 45UART Status 46 Data

DDP1010 Reset 4721 IIC Read Chip Bus Details 0 0 0 0 022 IIC Write Chip Bus Details 0 0 0 0 023 IIC Bus Latched ignore Bus 0 0 0 0 0 031 App (General) ? ? ? ? ? ? ? ?32 Reset Count 0 0 0 0 0 041 Watchdog Task Id Task Id Task Id Task Id Task Id Task Id Task Id Task Id51 Guide Process Termination 0 0 0 061 Audio Audio Exception 0 0 0 0 0 0 0 0

Additional DataAdditional Data

Process Exit Code

Reset Count

Type (hex)

Additional DataAdditional Data

Data ("Code") (hex)Description

Fig. 5 Error Code Chart

Fig. 6 Error Code Data

DLP DLP

Additional Data Description (Type 51)The guide process should never terminate so if it does die, the exit code will likely be one of the following exception values:

ValueACCESS_VIOLATION C0000005 FLT_UNDERFLOW C0000093DATATYPE_MISALIGNMENT 80000002 INT_DIVIDE_BY_ZERO C0000094BREAKPOINT 80000003 INT_OVERFLOW C0000095SINGLE_STEP 80000004 PRIV_INSTRUCTION C0000096ARRAY_BOUNDS_EXCEEDED C000008C IN_PAGE_ERROR C0000006FLT_DENORMAL_OPERAND C000008D ILLEGAL_INSTRUCTION C000001DFLT_DIVIDE_BY_ZERO C000008E NONCONTINUABLE_EXCEPTION C0000025FLT_INEXACT_RESULT C000008F STACK_OVERFLOW C00000FDFLT_INVALID_OPERATION C0000090 INVALID_DISPOSITION C0000026FLT_OVERFLOW C0000091 GUARD_PAGE 80000001FLT_STACK_CHECK INVALID_HANDLE C0000008

ValueException Exception

Additional Data Description (Type 41)The first Task Id is the first task to count down to zero. The remaining 7 Ids are any tasks whose counts are at or below 16.Thread Name Hex Value Thread Name Hex Value

UNKNOWN_TASK_ID = 0, 00 SOCKET_IN_TASK_ID, 40APG_TASK_ID, 1 SOCKET_OUT_TASK_ID, 41AV_MAIN_DRV_TASK_ID, 2 SOCKET_ERR_MON_TASK_ID, 42AV_PIP_DRV_TASK_ID, 3 OBSOLETE_03_TASK_ID, 43CA_MAIN_TASK_ID, 4 TUNER0_MONITOR_THREAD_ID, 44CA_PIP_TASK_ID, 5 TUNER1_MONITOR_THREAD_ID, 45CC_TASK_ID, 6 IE_MONITOR_TASK_ID, 46CC_DRAW_TASK_ID, 7 AUDIO_STATUS_TASK_ID, 47CHANACQ_MAIN_TASK_ID, 8 FPA_SCAN_TASK_ID, 48CHANACQ_PIP_TASK_ID, 9 FPIR_TIMEOUT_TASK_ID, 49CHANEPG_MAIN_ENUM_TASK_ID, A FPIR_REM_TASK_ID, 4ACHANEPG_PIP_TASK_ID, B FPIR_KBDKY_TASK_ID, 4BCHANEPG_VBI_TASK_ID, C FPIR_KBDPTR_TASK_ID, 4CCHANEPG_RECORD_TASK_ID D FPIR_KEYUP_TASK_ID, 4DCHANEPG_1394_TASK_ID E FPIR_KEYREPEAT_TASK_ID, 4ECOMPORT_TASK_ID, F KEYMGR_TASK_ID, 4FDC_TASK_ID, 10 SockThreadIn_TASK_ID, 50EEPROM_TASK_ID, 11 SOCKET_CLIENT_TASK_ID, 51EPG_ACQ1_TASK_ID, 12 SOCKET_CLIENT_ERR_TASK_ID, 52EPG_ACQ2_TASK_ID, 13 AV_DRV_VIDEO_STATUS_TASK_ID, 53EPG_ACQ3_TASK_ID, 14 RTC_TASK_ID, 54HWCTRL_TASK_ID, 15 IEE1394_CA_TASK_ID, 55ICP_TASK_ID, 16 FIREWALL_TASK_ID 56IIC_IST_TASK_ID, 17 EEPROM_CALLBACK_TASK_ID, 57LINE_SELECT_ID, 18 EEPROM_WD_TASK_ID, 58OSD1394_CONS_TASK_ID, 19 XDS_TASK_ID, 59OSD1394_PROD_TASK_ID, 1A DLP_TASK_ID, 60POWERFAIL_TASK_ID, 1B MODELLIB_TASK_ID, 61SCHED_TASK_ID, 1C IEEE1394INPUT_TASK_ID, 62SWITCHING_TASK_ID, 1D IEEE1394OUTPUT_TASK_ID 63TIMER_TASK_ID, 1E HDCP_TASK_ID, 64TRANSPORTLILIB_DATA_TASK_ID, 1F 65OBSOLETE_01_TASK_ID, 20 66OBSOLETE_02_TASK_ID, 21 67TPSIMULATOR_TASK_ID, 22 68IEEE1394TASK_ID, 23 69IEEE1394_MON_TASK_ID, 24 70TUNER0_ATSC_NTSC_ID, 25 71TUNER1_NTSC_ID, 26 72UI_TASK_ID, 27 73UPG_TASK_ID, 28 74WATCHDOG_TASK_ID, 29 75TV_PWR_TASK_ID, 2A 76SOCK_CLIENT_TASK_ID, 2B 77VIDEO_CCD_TASK_ID, 2C 78FACTORY_TASK_ID, 2D 79MODE_DETECT_TASK_ID, 2E 80DEFLECTION_TASK_ID, 2F 81BEP_TASK_ID, 30 82CHASSIS_REFRESH_TASK_ID, 31 83PIP_MOVEMENT_TASK_ID, 32 84PIP_VERTICAL_TASK_ID, 33 85DM2_TASK_ID, 34 86IE_MONITOR_THREAD_TASK_ID, 35 87IE_MAINWND_TASK_ID, 36 88AUDIO_APU_TASK_ID, 37 89PER_UPD_TASK_ID, 38 90AV_DRV_AUDIO_STATUS_TASK_ID, 39 91PipXDSDataThread, 3A 92CHAN_ACQ_0_STATE_TASK_ID, 3B 93CHAN_ACQ_1_STATE_TASK_ID, 3C 94HWCTL_LINE_MON_TASK_ID, 3D 95HWCTL_POWER_STATUS_TASK_ID, 3E 96FLASH_TASK_ID, 3F 97

Fig. 7 Error Code DataFig.

DLP DLP

Page 3-4Page 3-3

Vertical and Horizontal Centering

Vertical and Horizontal centering adjustments should onlybe performed after replacing the Light Engine.

Accessing Internal Test Patterns

1. Turn on the TV and select the channel that will be usedfor testing.

2. Select the Service Screen Menu.

3. Select “2 Service Alignment” item.

4. Once the Service Alignment screen is displayed use the“VOLu” on the keyboard or remote to adjust parameterzero (P:0) to a value of eighty (V:80).

5. With parameter zero (P:0) value at eighty (V:80) pressthe “CHp” button on the front keyboard or remotecontrol. This puts the instrument into the vertical andhorizontal centering mode as shown below. This allowsthe technician to select one of several internally gener-ated test patterns. (see table below) These may be usedfor alignment or troubleshooting. The patterns and theirsource are shown in the table below.

Vertical and Horizontal Centering Screen

PATTERN SOURCE Border Crosshatch DM Vertical Lines DM Horizontal Border Lines DM Horizontal Lines DM Crosshatch DM RGB Colorbar DM White Screen DM Black Screen DM BW Checker Board Light Engine

Pattern Table

6. Pressing the “Skip” or “Info” button on a remote control willbring up the test patterns one after the other.

7. Pressing “Go Back” or “Reset” on the remote control will dis-play the first test pattern.

8. Pressing “Menu” on the keyboard or remote control will togglethe display between the test pattern and the tuned channel video.

ALIGNMENT PROCEDURES9. Pressing the “Power” or “On/Off” button on the keyboard or

remote control will cause the instrument to exit the adjustmentmode and return to the (P:0) (V:80) display.

Mechanical Picture Adjustment

1. With the back cover removed loosen the two (2) lowest ofthe three (3) T20 screws holding the light engine in posi-tion.

Light Engine Screw positions


3. Put the instrument into the Service Alignment mode.

4. Use the “VOLu” on the keyboard or remote to adjustparameter zero (P:0) to a value of eighty (V:80).

5. With parameter zero value at eighty (V:80) press the“CHp” button on the front keyboard or remote controlto put the instrument into the vertical and horizontal cen-tering mode.

6. Use the “Skip” or “Info” button on a remote control to bring upthe crosshatch pattern.

7. While supporting the light engine lamp enclosure backoff the tension on the third upper screw until the light en-gine will rotate with light pressure.

8. While viewing the crosshatch on the front screen rotatethe light engine so that the horizontal lines are parallelwith the cabinet frame.

9. Press the “Menu” button on the front panel or remote con-trol to toggle the display from the crosshatch to channelvideo. Insure that tuned video and croshatch pattern aredisplayed with proper geometry.

10. Tighten the light engine screws and perform the electricalcentering procedure.

11. Pressing the “Power” or “On/Off” button on the keyboard orremote control will cause the instrument to exit the adjustmentmode and return to the (P:0) (V:80) display. Pressing the“Power” or “On/Off” button on the keyboard or remote controla second time will cause the instrument to exit the ServiceMenu.

Electrical Vertical and Horizontal Centering


2. Select the Service Screen Menu.

3. Select “2 Service Alignment” item.

4. Use the “VOLu” on the keyboard or remote to adjustparameter zero (P:0) to a value of eighty (V:80).

5. With parameter zero value at eighty (V:80) press the“CHp” button on the front keyboard or remote controlto put the instrument into the vertical and horizontal cen-tering mode.

6. Use the “Skip” or “Info” button on a remote control to bring upthe first test pattern, border crosshatch pattern.

7. Use the “CHq” and “CHp” on the front panel or Upand Down arrows on a remote control to adjust the verti-cal positioning of the upper and lower horizontal lines.Adjust the lines so that they are equal distance from theedge of the protective shield frame.

8. Use the “VOLt” and “VOLu” on the front panel orRight and Left arrows on a remote control to adjust thehorizontal positioning of the left and right vertical lines.Adjust the lines so that they are equal distance from theedge of the protective shield frame.

9. Press the “Menu” button on the front panel or remote con-trol to toggle the display from the crosshatch to channelvideo. Insure proper looking video display.

10.Pressing the “Power” or “On/Off” button on the keyboardor remote control will cause the instrument to exit theadjustment mode and return to the (P:0) (V:80) display.Pressing the “Power” or “On/Off” button on the keyboardor remote control a second time will cause the instrumentto exit the Service Menu.

GEMSTAR

To activate the Gemstar service menu, while in TV modepress “Menu”, then item 1 “GUIDE Plus+ Menu. Thenitem 2 “GUIDE Plus+ Setup. When the GUIDE Plus+menu is displayed press “GO BACK” and then the“INFO” button on the remote control. The Gemstar Ser-vice Menu can be cleared with the “CLEAR” button.

10

101 0

1

0

1

1

01

0

10

1

01

0

1

0

10

10

1

01

0

1 0

01

0

1

RED OUTPUT194V

TP50

TOE8

RED BIAS<21-B>

E5003

E5007TOE7

GRN BIAS

0

1

1

0

0

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0 1 11 0

VERTICAL

1

1

1

0

TP24

TECHNICAL TRAINING0

1

1

0

0

01

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01

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01

Cable CARDWhat is it and how to

Troubleshoot TVs that use it?

SAFETY INFORMATION CAUTIONSafety information is contained in the appropriate Service Data. All product safetyrequirements must be complied with prior to returning the instrument to theconsumer. Servicers who defeat safety features or fail to perform safety checks maybe liable for any resulting damages and may expose themselves and others topossible injury.

All integrated circuits, all surface mounted devices, andmany other semiconductors are electrostatically sensitiveand therefore require special handling techniques.

First Edition - First PrintingCopyright 2005 TTE Technology, Inc.Trademark(s)® Registered Marca(s) Registrada(s)RCA and associated marks are trademarks ofTHOMSON S.A. used under license to TTECORPORATION.

Printed in U.S.A.

Prepared byThomson, Inc for TTE Technology, Inc.Technical Training Department, INH905PO Box 1976Indianapolis, Indiana 46206 U.S.A.

FOREWORDThe intent of this manual is to answer some of the more common questionsassociated with the CableCARD™ and it’s use with Digital Cable Ready televisions.Basic information regarding CableCARD™ operation is covered in this manual tohelp service technicians in understanding the overall CableCARD™ system.Information about the cable system is generic in nature and is provided so theservicing technician can make logical decisions when troubleshooting DCR TVsthat are using the CableCARD™.

Note: The Host TV displays found in this manual are for a MotorolaCableCARD™. Different CableCARD™ manufactures or software versions ofthe Motorola CableCARD™ may have alternate information displayed by theHost TV.

ContentsFOREWORD ..............................................................3SAFETY INFORMATION CAUTION ..........................3Introduction ..............................................................5Digital Cable Head-end ............................................6CableCARD™............................................................7Copy Control Information (CCI) ............................10OOB Signal ............................................................. 11Authentication Process .........................................12CableCARD™ Tools Menu .....................................14 Reset.......................................................................16CableCARD™ Tools Diagnostic Info ....................17IDCR (2-way Communications) .............................21CableCARD™ Troubleshooting Procedure For Authorized Service Technicians ..................................... 22ERROR Codes ........................................................24CableCARD™ Troubleshooting Troubleshooting in the Home for Installers ......................... 27Authentication Process Flow Chart .....................30Common Problems ................................................31Acronyms ................................................................32

Note: The Host TV displays found in this manual are for a MotorolaCableCARD™. Different CableCARD™ manufactures or software versions ofthe Motorola CableCARD™ may have alternate information displayed by theHost TV.

Introduction

Since the introduction of Digital Cable Ready sets and the CableCARD™, the serviceindustry has been left with more questions than answers when it comes totroubleshooting a DCR TV with CableCARD™.

“Cable Card, what is it and how to troubleshoot TVs that use it?” covers basicinformation about the CableCARD, Head-end system, copy protection, Out of BandTuner, CableCARD™ Tools Menu, and ICDR or 2-way communications on digitalcable systems. This manual will help to answer some of the more commonquestions.

What is a CableCARD™? This manual will answer that question and provideinformation about the operation and processes a CableCARD™ must do to functionin a Host TV that is connected to a digital cable system.

What does the CableCARD do? Basic CableCARD™ operation from the time it isfirst inserted till it has been authorized by the Cable Company is covered in thismanual. There is a three (3) step authentication process that the Host TV andCableCARD™ go through in order to function together.

What is the CableCARD™ Tools Menu? The different tools used in diagnosing aCableCARD™ include:

• Network Setup• CableCARD™ Status• CableCARD™ Paring• Conditional Access

What is the future of CableCARD™? Today DCR TVs are currently available.IDCR or Interactive Digital Cable Ready sets are the future. These sets will allowthe end user several options of interactivity using just the remote control for the TV.This requires 2-way communication between the Cable Company and the Host TV.

This manual follows up with helpful information about the CableCARD™. Forexample, the current list of error codes from Cable Labs is listed in an easy tofollow chart. It lists the code number, error condition, the device at fault, andrecommended action(s) to resolve the issue.

Also included is a Troubleshooting section for installers. This will give servicingtechnicians a better understanding of what an installer goes through to isolate downa defective CableCARD™ or cable system problem.

Finally, with all the new terms associated with the DCR and CableCARD™, there isa list of the most common Acronyms used.

This section provides general information relating to the Head-end system usedwith digital cable systems and the CableCARD™. It will cover the basic concept ofoperation. This general information should be used to better understand theoperation of the CableCARD™ and Digital cable to make logical decisions whiletroubleshooting.

The purpose of the Digital Cable Head-end is to provide communications andconnectivity between the cable company’s content and the subscriber’s viewingdevice. What takes place between the Head-end and the subscriber’s home istransmission of the signal via cable. The digital transmission from the Head-endcontains content information, OOB (Out Of Band) signal, encryption data, ConditionalAccess (CA) information, and Copy control information (CCI). This data transmissionis present for each digital channel received by the subscriber. All these signals arecontrolled and combined by the Head-end device. Control of the head end is doneby the cable company operator.

Content is the digital information relative to the program content being transmittedvia digital signal. Audio and video programs are converted to digital form andtransmitted via the head-end to the subscriber’s home. Both encrypted and un-encrypted content can be transmitted. Once in the subscriber’s home, the encrypteddigital content needs to be decrypted for viewing. The CableCARD™ provides themethod to decrypt for viewing.

The OOB signal contains CCI, CA, and decryption information used to protect thecontent from piracy. This is a complex decoding system that requires the Host TV,CableCARD™, and Head-end be paired before decryption is allowed. If pairingstops, the CableCARD™ is designed to block all encrypted content from being

CableOperator

ContentServer

Digital CableHead-End

Phone Line

Phone Line

Cable

Cable

HostFigure 1; Cable System

Digital Cable Head-end

The CableCARD™ is a Personal Computer-Memory Card International Association(PCMCIA) card used with digital cable systems to control content viewing. Thiscard is used to decode digitally encoded cable signals that the end user hassubscribed to. CableCARD™, when inserted into the Host TV, controls the tuningand decoding of digital channels found on the cable system. It will only allow thosechannels that are paid for by the customer to be viewed. It also provides CopyControl Information (CCI) to the Host TV.

CableCARD™ OperationNOTE: The CableCARD™ provides only Conditional Access capability. NormalDigital Cable Ready (DCR) reception (Un-conditional Access Programming) canoccur without the CableCARD™ being inserted. In other words in the clear channelscan be viewed with out the use of the CableCARD™, provided the digital cable isconnected to the cable input.

In order for the CableCARD™ and the Host TV to function together there are certainprotocols that have to be met. The Host TV first must recognize the CableCARD™as a valid cable card and not just a PCMCIA card. After the CableCARD™ hasbeen recognized by the Host TV, but before the pairing processes has beencompleted, a channel list is downloaded from the cable company. The new channellist replaces any previous lists for the cable input. The cable channel list cannot bechanged while the CableCARD™ is inserted. This process is verified by accessingthe channel search menu and starting a search for Cable input only. The following

viewed. Information about the Host TV and CableCARD™ is provided by thesubscriber to the cable operator. The cable operator then sets up the Head-end topair the CableCARD™ with the Host TV.

CCI has little or nothing to do with viewing content. CCI is used to prevent additionalcopies of the program from being made or recording of the content for viewinglater.

Conditional Access is used to allow access to subscription content. If the subscriberpays for a channel(s), CA lets the CableCARD™ know what channel(s) have beensubscribed to.

This entire information package is transmitted by the Head-end to the subscriber’shome in digital format. Along the way, there are several possible connections,amplifiers, and taps that can affect the digital signal. If the CableCARD™ is notable to decode the digital signal, pairing won’t take place and encrypted contentviewing will be stopped or blocked.

CableCARD™

screen will come up indicating the channel list for this system has been received.

Next handshaking between the CableCARD™ and the Host TV takes place. Thishandshaking involves passing security codes and certificate information that boththe Host TV and CableCARD™ validate.

If this process is successful, the CableCARD™ tells the Host TV to display thepairing screen. This screen instructs the consumer to contact the cable serviceprovider to pair the CableCARD™ to the Host TV. This pairing process requiresinformation from the Host TV and CableCARD™ to be given to the cable servicerepresentative. Once this information is provided to the cable company ConditionalAccess System (CA), the head-end will send digital data to the CableCARD™ inthe OOB signal. This data instructs the CableCARD™ as to what service(s) havebeen authorized and what to decode for viewing.

The pairing information, found in the CableCARD™ Pairing menu, is displayedwhen the card is first inserted into the host TV. Pairing information is also broughtup by pressing MENU + 9 + 9 + 9 on the remote control. This is a universal accessfor all CableCARD™ devices. The information displayed consists of:

· Cable Card ID· Host ID· Data Field· Unit Address

If the on-screen prompt does not appear within a minute or two of the CableCARD™being inserted it indicates the CableCARD™ module has not been detected by the

In order to start cable servicefor this device, please contactyour cable provider(xxx) xxx-xxxx

CableCARD(tm):000-298-685-510-0Host:024-000-018-543-1Data:310-974-124-10

UnitAddress:000-02986-85510-224

Figure 3; Paring OSD

Figure 2; Channel Search OSD after Channel List from CableCARD™ Downloaded

A Channel Search is not availabefor the Cable Input

because a list of availablechannels has already been received

from the cable company. You can go to the Parental Controls menu

to set up the channel list for the Cable Input.

Continue

!

Host TV. If this is the first time a CableCARD™ has been inserted, or if theCableCARD™ previously worked but recently stopped, the CableCARD™ may bedefective and a new one should be obtained from the cable provider.

If the CableCARD™ is recognized, as indicated by on-screen prompts, there willbe further instructions to continue the installation. If the card is detected butdetermined to be invalid the following screen appears:

The Conditional Access System can revoke the authorization of the CableCARD™forcing it to reinitialize (Pair) with the Host TV. Until they are reinitialized, allconditional access (CA) programming will be blocked except for the unencryptedchannels. When this happens the Host TV will display the pairing screen as if theCableCARD™ was inserted for the first time.

Please call your cable operator andreport an invalid CableCARD.

Continue

!

Figure 4; Invalid Card OSD

Copy Control Information (CCI)

Copy Control Information (CCI) can be added to each program supplied by theCable Service Provider. CCI has different levels that dictate if a program can berecorded and how many times it may be recorded. There are four levels of CCI.The following table shows the different levels.

CCI values:(0) Copy Freely(1) Copy No More(2) Copy Once(3) Copy Never

The level of CCI for each program is determined by program provider or the CableService Provider. This level is then passed from the Head-end to the cable card inthe OOB data channel. The cable card decodes the CCI and passes it to the Hostunit in the clear. The host unit is required to control output of the program based onthe CCI value. For example; if the CCI level is 0 (copy freely) the program isallowed to be viewed and available on any of the Host outputs for recording. If thelevel is 3 (copy never), the Host can only display the program and is required toblock all recording of the program.

CCI can present a problem when using a Digital Video Recording device. The DVRmay not record or other functions of the DVR such as pause, review, etc. may notwork. The CCI levels for DVR operation are level 00 and 10. All other levels willprevent DVR operation. However; all levels of CCI will allow a "display only" HostTV to view the program.

NOTE: Copy never programs can be recorded using a Personal Video Recorder(PVR) and played back within 90 minutes. This is for PVR pause and other features,but not for long term storage. After the 90 minutes are up, the program will still beon the PVR. When accessed to play the program, the PVR will display an errormessage.

OOB SignalQPSK (Quadrature Phase Shift Keying) is a digital frequency modulation techniqueused for sending data over coaxial cable networks. Since it’s both easy to implementand resistant to noise, QPSK is used by DCR systems for sending data to and fromthe headend.

The QPSK receiver circuit in the Host TV tunes and demodulates the QPSK ForwardData Channel (FDC). The serial data in the FDC is used primarily to send conditionalaccess entitlement messages from the cable provider to the CableCARD™ eitherallowing or blocking program material that is encrypted. Program material that isnot encrypted will pass through the CableCARD™ regardless of the entitlement.

Tuning of the QPSK receiver circuit is under control of the CableCARD™. Thisreceiver circuit is generally known as the OOB or Out of Band Tuner. The OOBdata is seperate from the normal program material coming in on the standard set offrequencies.The normal program content is managed by the INB or In Band Tuner.The OOB tuner in the Host TV is separate from the normal QAM, ATSC and NTSCtuners. The tuning range of the OOB tuner is between 70 and 130 MHz, fallingwithin the cable frequency allocation from 54 to 1000 MHz.

A CableCARD™ must be inserted for the OOB to be tuned. Whether theCableCARD™ is paired to the Host TV or not, the OOB is tuned. CableCARD™pairing is determined by comparing incoming information from the cable providervia the OOB tuner data to the information contained in the CableCARD™.

The OOB circuitry is inactive if a CableCARD™ is not inserted. When aCableCARD™ is inserted, the Host TV initiates a handshake with the CableCARD™.If successful, the Host TV then activates the OOB tuner and decoder circuits asinstructed by the CableCARD™. The OOB circuitry is only connected to theCableCARD™ interface. There is no direct control of OOB data by the Host TV.

OOB Forward Data Channel vs OOB Reverse Channel DataThe out-of-band forward data channels are primarily for control and accessmessages, application code download and electronic program guide content. Ifcapacity is available, other data services may be transmitted through this channelas well. Out-of-band communications are always available to the Host TV, nomatter which analog or digital channels are tuned. For on-demand applications,the out-of-band forward channels may be used to support control and signalingflows between the Host TV and the Cable Company headend. The out-of-bandreverse data channels carry all data from the Host TV to the headend equipmentfor two-way communication. Two way communication is detailed in the sectiontitled "IDCR (2-Way Communication)".

Authentication ProcessTo provide authentication, the CableCARD™ verifies security data stored in theHost TV. This authentication ensures that the CableCARD™ will pair with certifiedHost TV devices only.

The authentication process is comprised of three steps that are used to verify theHost TV certificate.

1. The CableCARD™ checks to see that the digital signature of the certificatesupplied by the Host TV represents an accurate signature matching thecertificate authority. If the certificate is NOT authentic, encrypted servicesare blocked to the Host TV device. Once the CableCARD™ successfullyauthenticates the Host TV certificate, the CableCARD™ is authorized tobegin descrambling certain content for the Host TV.

2. The CableCARD™ ID, Unit Address, Data Field and the Host TV’s uniqueidentification numbers are provided by the customer to the Cable Companyto update the headend. The Host TV certificate is then verified againstcertificate revocation lists (CRL) stored at the cable headend. Once theheadend has verified the Host TV certificate has not been placed on theCRL, the headend will send a Host TV ID validation message back to theCableCARD™.

3. While the CableCARD™ is waiting for the Host TV ID Validation messagefrom the headend, the CableCARD™ requests the a Duffie-Hellman keyfrom the Host TV. This authentication key is compared to one derived in theCableCARD™. Only after all three steps have been completed successfullyis the CableCARD™ able to send all authorized services, including thosewith copy protection restrictions, to the Host TV device.

This Authentication process is checked on a regular basis for each channel selectedor when the Host TV and CableCARD™ are reset.

Figure 5; Authentication (Paring) Process

Cable Card™Inserted first time

START

OSD indicatingCable CARD™was detected is

displayed

Down loading ofChannel list

occurs

Paring InformationScreen is

displayed forcustomer.

Customer must contactCable Operator andprovide displayed

information

Paring betweenCable CARD™

and HOST occurs

Hostcommunicates

with CableCARD™

Communicationcomplete. Waitingfor information from

Cable Co.

Channel list loaded intoHOST memory and

channel searchblocked for cable

Host and CableCARD™ wait forcable co to send

paring information

Cable operatorsets up

customer intheir system.

Data transferfrom head endto host / cablecard occurs

Host and Cable CARD™are paired and decryptionof CA channels occurs.

CA channelsavailable for

viewing

Channel Viewingby customer

CableCARD™ Tools MenuSelections under CableCARD Tools Menu provide additional information about thestatus of the CableCARD™. The following is an example of the CableCARD™Tools menu. Each menu option has information that is useful in pairing up ortroubleshooting the CableCARD™.

Note: The following information is based on a Motorola CableCARD™. OtherCableCARD™ manufactures may have alternate information displayed by the HostTV.

Network SetupNetwork setup is used to manually retune the OOB channel frequency. By selecting“Hunt”, the CableCARD™ will start the process of searching for the OOB channel.When Successful, Status will indicate TUNED_STATE and OOB Msgs: will have avalue other then zero. The LKC indicates the frequency of the OOB signal. In thiscase it is 75.250MHz.

SUCCESS!Network Provider found.Frequency: 75.250,EMM:

Exit

Network Setup

LKC: 75.250 EEM:Status: TUNED_STATEOOB Msgs:3356

Hunt

Figure 6; CableCARD™ Tools Menu

Figure 7; Network Setup OSD

CableCARD™ StatusThe CableCARD™ Status menu displays information about the Manufacture,Download Status, Entitlement Management, and OOB Channel.

o Manufacture: Is the manufacture code and or name of the CableCARD™.This display may just show the manufacture code and not the manufacturesname.

o Version: Is the software version of the CableCARD™.

o Unit Address is used to pair the card with the host set. This information isalso found in other sections of the tools menu.

o Out of band channel indicates the OOB frequency. This is the last knowngood carrier only. Tuned or not tuned is a static state that represents thecondition of the network when Network Setup was last run. To get currentstate, run network setup.

CableCARD™ PairingThe pairing option brings up the same display that MENU + 9 + 9 + 9 brings up.This is the same display that comes up when the CableCARD™ is inserted but hasnot been paired.

CableCARD(tm) Status

Manufacture:0x00 (Motorla)Version:03.34Unit Address:0011CD9446000-02986-85510-224

Download StatusSegments left to download:State:Wait To Start

Entitlement Management MessagesEEM Provider ID:1

Out of Band ChannelLast Known Carrier:75.250 Tuned

In order to start cable servicefor this device, please contactyour cable provider(xxx) xxx-xxxx

CableCARD(tm):000-298-685-510-0Host:024-000-018-543-1Data:310-974-124-10

UnitAddress:000-02986-85510-224

Figure 8; CableCARD™ Status OSD

Figure 9; CableCARD™ Paring OSD

Conditional AccessConditional access option provides some of the same information that the othermenu options provide but adds information about the currently tuned channel. Thisadditional information deals with the Copy Control Information (CCI) and PacketIdentification Number (PID).

o ECM PID or Entitlement Control Message Packet Identification number: Usedfor verification that the correct ECM is sent for each program.

o Component PID: Used for error handling

o Host Validation: Information used to verify that paring has taken place. Somesystems do not automatically store this value. This requires it to be given tothe cable operator.

o The Copy Protection Key indicates wheather or not the program is usingCCI. The CCI value is the level of copy protection being used for the currentlytuned program.

Conditional Access

Unit Address: 0011CD9446000-02986-85510-224State: SubscribedECM PID: 0x0000Component PIDs:0x00410x0040x00000x0000 0x0000 0x0000Host Validation: Valid 09Copy Protection Key: DisabledCCI: 00

Figure 10; CableCARD™ Conditional Access OSD

ResetThe CableCARD™ Reset option allows the consumer to perform a manual resetwithout removing the CableCARD™. Reset is a complete reset of the CableCARD™.The channel list is removed form the Host TV and Host TV validation process isreset. If after Reset the pairing screen comes up, the cable company may haverevoked the CableCARD™. This will require the CableCARD™ to be re-pairedwith the Host TV.

Reset should be used anytime there is a problem with receiving channels, channelfreeze, wrong channel list stored, or some channels missing. Some Host TV’s willreset the CableCARD™ automatically when the CableCARD™ is detected as beinglocked up.

Figure 11; CableCARD™ RESET OSD

Figure 12-1; CableCARD™ Diagnostic Info

CableCARD Tools Diagnostic InfoThis following is for various RCA / Scenium products only. Other manufacture'smenus will vary.


Diagnostic Info screen displays certain information about the CableCARD™ andHost TV. This information provides the cable company / installer or servicingtechnician with details about:

• Out Of Band (QPSK / FCD)• Host TV and CableCARD™ Certificates• Virtual Channel• PSIP Channel• Number of Audios• Physical Channel• Program Number• Signal Strength• Video PID• Audio PID• PCR PID• CCI Byte• Broadcast Flag

Each title has a state or data value assigned during normal operation. Reviewingthis information will assist in troubleshooting a CableCARD™ problem.

Out Of Band (QPSK / FCD)The states for Out Of Band (QPSK / FCD) are Locked and Unlocked. When theCableCARD™ is receiving and decoding OOD data, the Out Of Band (QPSK /FCD) will show “LOCKED”. If the CableCARD™ can’t decode the OOB data, the

Out Of Band (QPSK / FCD) will show “Unlocked”. Unlocked indicates a problemwith the CableCARD™ or cable system.

Host TV and CableCARD™ CertificatesCertificates for TV Digital Cable and CableCARD™ are verified on a regular basis.Any time the channel is changed or the CableCARD™ is inserted the certificatesare checked. If the certificates are valid, the display will read “Verified”. If thecertificates aren’t read, the display will read “Insert CableCARD”. The other optionis Failure. Failure under TV Digital Cable indicates a problem with the Host TV andFailure under CableCARD™ indicates a problem with the CableCARD™.

Virtual ChannelVirtual Channel is the displayed channel number. Channel mapping by the cablecompany can assign any number to a given frequency. This assignment becomesthe virtual channel number for a given frequency. In the example, 93-2 is thenumber that will be displayed in the channel banner. The (0x005d-0x0002) is theHEX equivalent of 93-2.

PSIP ChannelPSIP channel is the Program and System Information Protocol channel. This willchange depending on what input is selected. Other possibilities are:

• Analog Channel• PSIP Channel (associated with HD digital channels)• PAT / PMT (CableCARD™ or cable company)• Input 1• Input 2• Input 3 etc.

Number of AudiosIf there are more then one audio channel (SAP) then the number will indicate howmany there are.

Physical ChannelThis is the actual channel number for the currently tuned channel. This numbercan be different from the virtual channel number because of channel mapping.(See Virtual Channel)

Program NumberProgram number is used to display what sub channel of the physical channel theset is tuned to. In this example, 2 is the program number.

Signal StrengthSignal strength is a number indication of how strong the tuned channel signal is.The higher the signal strength number, the stronger the signal is and vise versa.Signal Strength is an indication of signal to noise ratio only, not an actualmeasurement of the signal energy.


Video and Audio PIDPacket Identification number identifies the data sub stream for Audio and Video.

PCR PIDPCR or Program Clock Reference Packet Identification number is the data substream for the encoder / decoder synchronization.

CCI ByteCopy Control Information Byte displays the level of copy protection the currentlytuned station has. See the section on page 10 Copy Control Information (CCI) forthe different values.

Broadcast FlagBroadcast Flag is a sequence of digital bits that indicates if a program is protectedfrom unauthorized redistribution. The state for this is on or off. Broadcast Flagallows content to be copied but blocks the transmission of content over anunauthorized system. This is different from the CCI Byte that protects content frombeing copied.

If set is tuned to an input, only the Out of Band, TV and CableCARD™ Certificateswill be displayed, all other information will show as "not applicable".

CableOperator

ContentServer

Digital CableHead-End Cable

Cable

Host

Figure 13; IDCR System

IDCR (2-way Communications)

The future of the Host TV is to provide two way communications between the CableCompany and the Host TV through the CableCARD™. The two way communicationswill allow the subscriber to access pay per view channels with out contacting thecable operator to set it up. With two way communications, the Host TV will transmitdata information back to the Head-end in much the same way the Head-end sendsdata to the Host. This requires that the Host TV be capable of transmitting digitaldata via the cable connection.

Transmission of data is not only used for pay per view, it is used to maintain the CAand CCI information. It also allows the cable company to monitor what the subscriberis viewing to better serve the subscriber.

Currently only set top boxes (STB) have two way communication using aCableCARD™ device. This setup provides the subscriber with many more featuresover the Host / CableCARD™ setup. These extra features include: Interactive TV,Pay-Per-View, Video on Demand, and the ability to change subscription optionswithout contacting the Cable Company.

To tell if a set is capable of two way communication, look for the logo:

IDCR or Interactive Digital Cable Ready has the ability to provide two waycommunication on a digital cable system. The arrows in the logo indicate two waysignal transfer. All devices in this system must be able to transmit in both directions.This includes the Head-end, amplifiers, splitters, DVR, VCR, and any other deviceplaced in the path of the cable signal.

CableCARD™ Troubleshooting ProcedureFor Authorized Service Technicians

1. Remove CableCARD™ and reset Host TV by unplugging Host TV from ACpower for one (1) minute.

2. Reapply AC power and turn Host TV on. Initiate a complete channel searchfor the cable input. This will clear any previous channel list stored by theCableCARD™.

3. Access a valid cable channel. Is station audio and video clear? If “Yes”, goto step # 4. If “No”, continue troubleshooting Host TV and the Cable Systemto correct. Once you have resolved any cable signal noise problems, continueto step #4.

4. Insert the CableCARD™ and wait for the on-screen display (OSD) prompts(see Authentication Process on page 12). Did the CableCARD™ PairingOSD appear? If “Yes”, contact the cable company and provide them withinformation to begin the pairing process. If “No”, go to step # 5.

5. Access the CableCARD™ Tools Menu and RESET the CableCARD™. IfRESET option is not available, remove the CableCARD™ and reinsert it.Did the CableCARD™ Pairing OSD appear? If “Yes”, go to step #8. If “No”,go to step # 6

6. Confirm that the OOB signal has been found and is locked. No CableCard™processes are allowed to take place without a locked OOB signal. Dependingon the available diagnostic menus you may use either option a. or b. todetermine the presence of a valid OOB signal

a. In the available CableCard™ tools or diagnostic menus search forindications that the “Out of Band” or “OOB” is “tuned”, “LCK” or“Locked”.

i. If the OOB signal is not locked, go to step #7ii.If the OOB signal is locked, go to step #8

If there are no OOB indicators in the available diagnostic menus and tool, useoption b. to verify the presence of a valid OOB signal

b. Enter the channel search options and attempt to initiate a search forcable channels.

i. If a cable channel search is allowed, this would indicate theOOB signal is invalid or missing. Go to step #7.

ii.If a cable channel search is not allowed because a cablecompany channel list has already downloaded, this is anindication a valid OOB signal has been acquired. Go to step#8

7. Suspect CableCARD™ or cable system failure. Common cable systemcomponents known to cause the loss of the OOB signal are:

· Splitters· Amplifiers· Defective cables (Inside and Outside)· Other devices connected before the Host TV (VCR, DVD, DVR, etc.)· Bad Ground on the Grounding Block

If possible, connect the Host TV directly to the main cable before it enters theresidence. This eliminates many of the system components listed in step #7.Once the cable system has been repaired, go back to step #6 and confirm OOBhas been found and is locked.

After OOB has been confirmed, go to step #8.

8. Access the CableCARD™ Pairing screen from the CableCARD™ ToolsMenu. Contact the cable company and provide them with information requiredto authorize the CableCARD™.

9. Once the CableCARD™ has been authorized, attempt to access anyencrypted channel. If encrypted channels can be viewed, go to step #10. Ifnot, contact the cable company and report the issue for resolution.

Note: In many cases only the premium or pay per view channels areencrypted. If unable to view encrypted channels, suspect the CableCARD™or an authorization failure.

10.If encrypted channels can be viewed, the system is working.

ERROR Codes

A technical problem is preventing youfrom receiving all cable services at

this time.

Please call your cable operator andreport error code 161-xx to have this

problem resolved.

CableCard™ error codes are displayed on the HostTV in a format similar to the one on the right. The codeit’s self is 161-XX where XX is the code number. Thefollowing tables list the codes currently being used.

Error Condition Device Action Comments1 Card READY Signal does not go active Card Reset Host / Cable CARD™

2 Host reads incorrect CIS values Card Reset Host / Cable CARD™ Report error if problem continues

3 Host writes incorrect value to Card configuration register Host Troubleshoot Host TV

4 Host sets command channel bit but Card fails to set bit within 5-seconds Card Reset Host / Cable CARD™

5 Host sets extended channel bit but Card fails to set bit within 5-seconds Card Reset Host / Cable CARD™

6 Invalid Buffer negotiation -Card- Card Reset Host / Cable CARD™ Report error if problem continues

7 Invalid Buffer negotiation -Host- Host Troubleshoot Host TV

8 Invalid Buffer negotiation -Card- Card Reset Host / Cable CARD™ Report error if problem continues

9 Invalid Buffer negotiation -Host- Host Troubleshoot Host TV

10 Card doesn't respond to Host open transport within 5-seconds Card Reset Host / Cable Card™

11Host doesn't respond to Card request to open resource manager within 5-seconds

Host Troubleshoot Host TV

12Host responds to open resource manager session response -resource manager non-existent


13Host response to open resource manager session response -resource manager unavailable


14Host response to open resource manager session response -Incorrect version of resource manager


15Host resopnse to open resorce manager session response -resorce manager bussy


16Host resopnse to open resorce manager session response -invalid status byte


17 Card fails to respond to profile_INQ within 5-seconds Card Reset Host / Cable CARD™

18 Host reource response -no application information resource Host Troubleshoot Host TV

19 Host resource response -no host control resource Host Troubleshoot Host TV

20 Host resource response -no system time resource Host Troubleshoot Host TV

21 Host resource response -no MMI resource Host Troubleshoot Host TV

161-

Error Condition Device Action Comments

22 Host resource response -no low speed communications Host Troubleshoot Host TV

If OOB reverse path not available, then some application will be unavailable.

23 Host resource response no homing resource Host Troubleshoot Host TV

Card may have some operation problems (i.e. downloading software)

24 Host resource response -no copy protection resource Host Troubleshoot Host TV Only clear channels may be

viewed.

25 Host resource response -unknown resource identifier Host Troubleshoot Host TV Not a failure condition

26 Host fails to respond to open session request within 5-seconds Host Troubleshoot Host TV

27Host response to open application info resource session -application info non-existent


28Host response to open application info resource session -application info unabailabe


29 Host response to open application info -incorrect version of application info Host Troubleshoot Host TV

30 Host response to pen application info -application info bussy Host Troubleshoot Host TV

31 Host response to open application info -invalid status byte Host Troubleshoot Host TV

32Card request to open conditional access session to the Host times out after 5-seconds


33 Card response to conditional access -conditional access non-existent Host Troubleshoot Host TV

34 Card response to conditional access -conditional access unavailable Host Troubleshoot Host TV

35 Card response to conditional access - incorrect version of conditional access Host Troubleshoot Host TV

36 Card response to conditional access -conditional access bussy Host Troubleshoot Host TV

37 Card response to conditional access -invalid status byte Host Troubleshoot Host TV

38 Card fails to respond to CA_INFO_INQ within 5-seconds Card Reset Host / Cable CARD™

Report error if problem continues

39Card request to open copy protection session to the Host times out after 5-seconds

Host Troubleshoot Host TV Only clear channels may be viewed.

40Host response to open copy protection resource session -copy protection non-existent


41Host response to open copy protection resource session -copy protection unavailable


42 Host response to open copy protection resource session -copy protection busy Host Troubleshoot Host TV Only clear channels may be

viewed.

ERROR Codes

161-

Error Condition Device Action Comments

43 Host response to open copy protection resource session -invalid status byte Host Troubleshoot Host TV Only clear channels may be

viewed.

44 Host doesn't support Cable CARD™ device's copy protection system Both Host / Card Incompatibility Only clear channels may be

viewed.

45 Host and Cable CARD™ wont Pair Both Host / Card Incompatibility Only clear channels may be viewed.

46 Host response to CP-SYNC -Host busy Host Reset Host / Cable CARD™ Troubleshoot Host TV

A copy protected channel will stop being descrambled

47 Host response to CP-SYNC -no CP support Host Troubleshoot Host TV a copy protected channel

will stop being descrambled

48 Host response to CP_SYNC -invalid status Host Troubleshoot Host TV A copy protected channel


49 Host fails to respond to CP_OPEN_REQ Host Troubleshoot Host TV A copy protected channel


50 Invalid Host certificate Host Troubleshoot Host TV Only clear channels may be viewed.

51Write error (WE) occurs after completion of any transfer from Host to Cable CARD™

Both Reset Host / Cable Card™User may see frozen picture on scrambled channels

52Read error (RE) occurs after completion of any transfer from Card to Host

Both Reset Host / Cable Card™User may see frozen picture on scrambled channels

53 Card fails to respond to any request within 5-seconds Card Reset Host / Cable CARD™

Report error if problem continues

User may see frozen picture on scrambled channels

54 Invalid session APDU from Host Host None Not a failure condition55 Invalid session APDU from Card Card None Not a failure condition56 Invalid SPDU tag from Host Host None Not a failure condition57 Invalid SPDU tag from Card Card None Not a failure condition58 Invalid APDU tag from Host Host None Not a failure condition59 Invalid APDU tag from Card Card None Not a failure condition

60 Transport ID from Host that has not been created and confirmed by Card Host None Not a failure condition

61 Transport ID from Card that has not bee created by Host Card None Not a failure condition

62 Session ID from Host that has not been created and confirmed by card Host None Not a failure condition

63 Session ID from Cable CARD™ device that has not been created by Host Host None Not a failure condition

64 Imcompatible Cable CARD™ device inserted Host Replace Cable CARD™ Used when an S-Card is

inserted into an M-Host

65 Card resource limit reached Card Reset Host / Cable CARD™ Report error if problem continues

ERROR Codes

161-

CableCARDTM TroubleshootingTroubleshooting in the Home for Cable Installers

1. It is recommended that a couple of extra CableCARD™s be used fortroubleshooting. This will help eliminate the CableCARD™ as a possibleproblem.

2. Before installing the new CableCARD™, the installer should check that theDigital Cable Ready (DCR) TV, also referred to as a Host TV, is functionalwithout a CableCARD™.

a. Verify Host TV Operation: This is confirmed by connecting the RFcable to the correct input of the Host TV (there may be connections fora terrestrial antenna) and verifying good picture quality. The Host TVwill display all non-encrypted analog and digital content. (The Host TVmust not receive the RF signal via a Set Top Box or accessory RFmodulator.)

This step only eliminates basic TV circuitry as a potential problem.NOTE: This does not eliminate the Host TV it only verifies basicoperation of the HTV. A channel search on the Cable Input may berequired to add any channels which were re-mapped with theCableCARD™.

b. Install the CableCARD™ and check that it is inserted properly. Wheninserting cable card, push carefully but firmly until you feel the cardclick into place. When correctly inserted the card may or may not beflush with the back of the slot, this varies according to manufacturer.

Once the host has established communication with the card, onscreeninformation will be displayed indicating the card was inserted anddetected.

c. Verify RF from Cable System: A cable set top box can be used toconfirm reception of encrypted digital services. This will ONLYindicate that the cable signal is correct for the Set Top Box. The datafor the Cable CARD™ could still be a problem.

3. If the first Cable CARD™ installed does not result in a User Interface screen(also referred to as Man Machine Interface screen) within 2 - 5 minutes, tryunplugging the AC cord of the Host TV and reconnecting it (this should resetthe Host TV and CableCARD™), then try to access the User Interface screenagain. This screen is accessed by the industry agreed-upon remotecombination of MENU+9+9+9. If this is still unsuccessful, try anotherCableCARD™.

a. To eliminate the possibility of a damaged CableCARD™ or Host TV,the installer should look closely at the CableCARD™ to ensure thatnone of the pinholes are blocked or clogged.

b. Check the Host TV Interface (CableCARD™ slot): Using a flashlight,look in the CableCARD™ slot on the Host TV to ensure that there areno bent pins.

c. If the CableCARD™ is inserted correctly but the CableCARD menu isnot displayed or is grayed out, try the RESET option in the menu, ifpresent.

4. If the second CableCARD™ is successful, make sure the Cable Co CustomerService Rep or Dispatcher knows the new MAC ID and Cable CARD™ ID tocomplete the paring.

5. Check the CableCARD™ Tools menu options. If the second CableCARD™fails to bring up the User Interface screen, the installer should refer to thediagnostic menus of the Host TV for further troubleshooting. The installer canpull up the User Interface screen manually through the menu choices.

The installer can confirm the status of the CableCARD™ and the ForwardData Carrier (FDC). The list of CableCARD™ options will vary, depending onyour cable service provider or CableCARD™ manufacturer.

6. If the CableCARD™ is still having problems, the installer should report theproblem to the Cable Company dispatcher for troubleshooting. If the cablecompany dispatcher (head end personnel) has completely checked theirchannel set-up, confirmed the accounting/billing system is correct, and hasconfirmed normal channel map with other DCR TVs at the headend, then goon to the next step.

7. If the installer determines that the Host TV device is the problem (unit failedeither item 2a or 3b above) and can go no further in correcting the problem,or if the installer determines that the pairing screen cannot be displayed withmultiple CableCARD™s, the installer should consider the Host TV is at fault.

8. If using a Set Top Box (STB) allows the customer to receive services on thesuspected Host TV, the STB should be used until the customer resolves theissue with the Host TV manufacturer.

9. If the installer is able to install the CableCARD™ device and access the UserInterface screen (also referred to as MMI screen), and has relayed theinformation to the dispatcher, but is still not receiving encrypted programming,this programming may be protected through the use of copy protectiondirective. The installer needs to ensure that the information passed to thecable operator is correct. Relay again the Host ID, CableCARD™ ID and DataID (Motorola only). Cable operator will send a hit to the CableCARD™ oncethe information is checked and verified. The CableCARD™ must be paired

to the Host before copy protected programming can be displayed. Note thatit may take several minutes from the time operator sends the authorization tillit reaches the Host TV.

10.The MMI screens should be checked to verify if the authorization has beenreceived. For Scientific Atlanta systems the pairing screen should say“Authorization Received.” For Motorola the Conditional Access MMI Stateparameter should say “Subscribed”. If encrypted programming is still notdisplayed, the Host TV may be the problem.

Items to consider:• Make sure the dispatcher is “addressing” the CableCARD™ through the right

“plant” or head end.• OOB (FDC) signal levels and adjacent channel interference should be

checked.• Verifying that the dispatcher has the correct numbers is not always sufficient.

There are reports from the field that the authorization may have to be sent twoor three times to authorize the card.

Authentication Process Flow ChartThe following flow chart adds a possible solution to key steps in the authenticationprocess if that process fails to complete. The 80% and 20% columns in each boxindicate which device is suspect that percent of the time. Looking at the first processfailed decision (YES), the CableCARD™ would be suspect 80% of the time while theHost TV is suspect 20% of the time.

Figure 14; Authentication Process Flow Chart

Cable Card™Inserted first time

START

OSD indicatingCable CARD™was detected is

displayed

Down loading ofChannel list

occurs

Paring InformationScreen is

displayed forcustomer.

Customer must contactCable Operator andprovide displayed

information

Paring betweenCable CARD™

and HOST occurs

Hostcommunicates

with CableCARD™

Communicationcomplete waiting

for information fromCable Co.

Channel list loaded intoHOST memory and

channel searchblocked for cable

Host and CableCARD™ wait forcable co to send

paring information

Cable operatorsets up

customer intheir system.

Data transferfrom head endto host / cablecard occurs

Host and Cable CARD™are paired and decryption

of encrypted channelsoccurs.

Encryptedchannels

available forviewing

Channel Viewingby customer

ProcessFailed?

ProcessFailed?

ProcessFailed?

ProcessFailed?

ProcessFailed?

ProcessFailed?

NO

NO

NO

NO

NO

Suspect CableCARD™

Suspect CableSystemYES

YES

Suspect Host TVYES

Suspect CableSystemYES

Suspect CableSystem or Pairing

Process.YES

Suspect Host TVYES

NO

Suspect Host TV

Suspect Host TVor Cable Card

Suspect CableCard or Cable

System



Suspect CableCard or Cable

System or PairingProcess.

80%of the time

20%of the time

Note: If the pairing process fails at any time,wait 15 minutes and try the process again.

Common ProblemsThe following are common issues related to Cable CARD™ and Host TVoperation.

1. Can’t view encrypted channels:• CableCARD™ not authorized for these channels• CableCARD™ defective

2. Can’t get CableCARD™ to pair with Host TV:• Weak signal on cable• Wrong or defective splitter in cable system• Amplifier in cable system not passing OOB signal• No direct connection to cable input on Host TV. (VCR, DVR, STB, etc

between cable head-end and Host TV)

3. CableCARD™ was working but stopped or locked up:• Host TV and CableCARD™ lost sync (RESET Host TV and

CableCARD™)• CableCARD™ failed• CA system lists CableCARD™ ID as revoked

4. Can’t get CableCARD™ to work but set top box will work:• Wrong or defective CableCARD™• Weak cable signal to Host TV• Network Setup incorrect; Hunt for new OOB channel.• Wrong Configuration at Head-end

5. Missing channels after CableCARD™ was inserted:• Cable head-end not sending out the correct channel map• Missing channels are scrambled and not authorized for viewing

6. Cable channel list changed after CableCARD™ was inserted:• See # 5 “Missing Channels after CableCARD™ was inserted”

7. Cable channel list is incorrect when CableCARD™ is inserted:• See # 5 “Missing Channels after CableCARD™ was inserted”

8. Receiving error message 161-XX, what does it mean:• Refer to Error code table on page 24

AIT Application Information TableAPI Application Program InterfaceATSC Advanced Television System CommitteeAWT Abstract Windowing ToolkitBFS Broadcast File System.BNF Backus-Naur FormCA Conditional AccessCATV Cable TVCCI Copy Control InformationCORBA Common Object Request Broker ArchitectureCP Content ProtectionCRC Cyclic Redundancy CheckCRL Certificate Revocation ListDAVIC Digital Audio Visual CouncilDECT Digital Enhanced Cordless TelecommunicationsDHCP Dynamic Host Configuration ProtocolDII Down load Info IndicationDOCSIS Data-Over-Cable Service Interface SpecificationDSM-CC Digital Storage Media—Command and Control. Part 6 of the MPEG-2standardDSM-CC-OC Digital Storage Media—Command and Control Object CarouselDSM-CC-UU Digital Storage Media—Command and Control User to UserDTD Document Type DefinitionDVB Digital Video BroadcastingDVS Digital Video SubcommitteeDTVCC Digital Television Closed CaptioningEAS Emergency Alert SystemECM Entitlement Control MessageEE Execution EngineEIA Electronic Industry AllianceEN European NormsEPG Electronic Program GuideES Elementary StreamETS European Telecommunications StandardETSI European Telecommunications Standard InstituteExCCI Extended Copy Control InformationFCC Federal Communications CommissionGEM Globally Executable MHPGSM Global System for Mobile CommunicationsHAVi Home Audio/Video interoperability.HDNI Home Digital Network InterfaceHDTV High Definition TelevisionHTML Hypertext Mark-up Language

Acronyms

HTTP Hypertext Transport ProtocolIETF Internet Engineering Task ForceIP Internet ProtocolISO International Organization for StandardizationITU International Telecommunication UnionITV Interactive TelevisionJDK Java Development KitJFIF JPEG File Interchange FormatJMF Java Media FrameworkJSSE Java Secure Socket ExtensionLMDS Local Multipoint Distribution SystemMA Monitor ApplicationMAC Media Access ControlMHP Multimedia Home PlatformMMDS Multipoint Microware Distribution SystemMMI Man Machine InterfaceMPEG Moving Picture Expert GroupMSO Multiple Service OperatorMIME multipurpose internet mail extensionsNCTA National Cable Telecommunications AssociationNPT Normal Play TimeNTSC National Television Systems CommitteeNVOD Near-Video-On-DemandOCAP OpenCable Application PlatformOOB channel Out-Of-Band channelOOB-FDC Out-Of-Band Forward-Data-ChannelOOB-RDC Out-Of-Band Reverse-Data-ChannelOS Operating SystemPCR Program Clock ReferencePES Packetized Elementary StreamPHILA POD Host Interface License AgreementPID Packet Identification numberPMT Program Map TablePOD Point of Deployment modulePPV Pay-per-viewPSIP Program and System Information ProtocolPSTN Public Switched Telephone NetworkPVR Personal Video RecorderRCMM Root Certificate Management MessagesRMI Remote Method InvocationSCTE Society of Cable Telecommunications EngineersSDP Session Description Protocol

SI Service InformationSMATV Satellite Master Antenna TVSSL Secure Sockets LayerSTC System Time ClockTLS Transport Layer SecurityUI User InterfaceURI Universal Resource IdentifierURL Uniform Resource LocatorUTC Coordinated Universal TimeVBI Vertical Blanking IntervalVCT Virtual Channel TableVOD Video-On-DemandXAIT Extended Application Information Table

TCableCardTroubleshootingGuide


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1

0

1

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01

0

10

1

01

0

1

0

10

10

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0

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RED OUTPUT194V

TP50

TOE8

RED BIAS<21-B>

E5003

E5007TOE7

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0

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TTI GIS 04-001

GIS 05-001File In Appropriate Section of YourThomson Technical Bulletin Binder

GENERAL INFORMATIONSERIES

Product Support & Technical Training Mail Stop INH905 P.O. Box 1976 Indianapolis, IN 46290-1102

DLP UHP Lamp / Lamp Ballast Characteristics

As with all troubleshooting, a good understanding of the circuit or process is needed. We will coverthe fundamentals of Lamp Strike or Ignition, Lamp Lit (Burn), and Defective Lamp. After thefundamentals have been covered we can begin to troubleshoot the Lamp and Lamp Ballast.

Basic Lamp Construction:

In the DLP line up there are several different Lamp / Ballast venders. For each vender the Lampdesign is mated with the ballast design and the light engine that controls the ballast. These parts areNOT interchangeable between venders. When replacing a lamp or ballast always refer to the servicemodel with suffix to insure the correct part is ordered.

First Edition - First PrintingCopyright 2005 Thomson, Inc.Trademark(s)® Registered Marca(s) Registrada(s)RCA and the RCA logos are trademarks of THOMSONS.A. used under license to TTE CorporationPrinted in U.S.A.


Side Connector

Reflector

Lead Wire

Back Connector

Arc Tube

DATE: 02/16/2005

Hg

WARNING: EYE DAMAGE MAY RESULT FROM DIRECTLY VIEWING THE LIGHT PRODUCED BY THE LAMP.ULTRAVIOLET RADIATION EYE PROTECTION IS REQUIRED DURING SERVICING.

TTI GIS 05-001Page 2

The basic construction of a Lamp consists of:

• Arc Tube

• Back Connector

• Reflector (Lamp Assembly)

• Lead Wire

• Side Connector

Arc Tube: This is where the arc takes place and is also known as the “burner”. Internal to the arc tubeare two electrodes made of tungsten. Surrounding these electrodes is mercury vapor and othergasses. To generate the arc, the electrodes are supplied with high voltage. Once the arc hasjumped the gap between the electrodes, current starts to flow and the lamp is lit. The operatingpressure inside the Arc Tube is around 200 bar.

There are two connectors, Back Connector and Side Connector. These connectors provide electricalconnection between the Ballast Supply and the Arc Tube through the Lamp Assembly.

Reflector (Lamp Assembly): The reflector reflects the light generated by the Arc Tube into a focusedbeam used by the light engine.

Side Connector

Reflector

Lead Wire

Back Connector

Arc Tube

Hg

HgThis symbol indicates that the lamp in the HDTV containsmercury. Disposal of these materials may be regulateddue to enviromental considerations. For disposal or recy-cling information, pleas contact your local authorities orthe Electronic Industries Alliance: www.eiae.org

TTI GIS 05-001 Page 3

Lamp Characteristics

The above graph shows the characteristics of a UHP lamp over its life cycle. As the lamp ages, thelight output decreases with the erosion of the electrodes. Because of the eroding electrodes, boththe lamp operating voltage and number of strikes required to start a cold lamp increases. Thenumber of strikes required to start a hot lamp also increases over time but starts out slightly higherthan cold strikes. A “HOT” strike is defined as striking a lamp that is above room temperature.

There are several conditions that decrease or shorten the life of the lamp. A few are listed here:

• Heat (Improper Ventilation)

• Shock (moving unit while in operation)

• Fast paced cycling set on and off

Heat is by far the worst condition of them all. With out proper ventilation, the lamp life can be reducedby 75% or better. Thermo protection is used to shutdown the lamp if excessive heat is detected.

Lamp Strike (Ignition)

The voltage required to ignite the lamp varies by lamp manufacture. Also, the number of ignitioncycles it takes to light the lamp may vary. As the lamp ages, more ignition cycles may be requiredto start the lamp. Typically, the ignition voltage is from 5Kv to 20Kv.

# Strikes to start (cold lamp)

Lamp Output

Lamp Operating Voltage

Characteristics of UHP Lamp

0Life Span (t)

Valu

e

NEW REPLACE

# Strikes to start (HOT lamp)

TTI GIS 05-001Page 4

When the lamp is hot it is more difficult to ignite then when cold. As the temperature increases sodoes the pressure in the Arc Tube. With the higher pressure, the lamp may require additional striketimes to get the Arc Tube to light.

When a lamp fails to strike there is an indication besides the obvious lack of light output. If the lampfails to strike the DLP front panel LED will blink a sequence (see service data or IB for number oftimes power LED blinks for each model). In DM3 based models this will repeat for up to 5 minutesafter which time the power LED will start to flash rapidly for about 1 minute. The blinking of the powerLED occurs after each failed attempt to strike the lamp. The LED blinking sequence is not a replacelamp indicator, this only indicates that the lamp has failed to strike. A open lamp door will also causethe LED to blink in the same manner. Multiple strike failures could indicate a defective lamp or lampballast supply.

Lamp Lit (Burn)Once the lamp starts to draw current, the voltage to the lamp drops significantly. This indicates thelamp is in the operating state. The typical voltage for operating is approximately 70-100VAC. Thisis measured between the lamp back and side connectors. As the lamp ages this voltage will increase.When the voltage reaches approximately 125VAC, the ballast supply will send information to thelight engine indicating the lamp is defective. At that point the Light Engine will shutdown the ballastsupply.

Defective LampAs the lamp ages two things happen. One is the number of strikes to start the lamp operatingincreases and the other is the lamp operating voltage increases. A lamp is considered defectivewhen it consistently takes more than three strikes to light the lamp or the lamp operating voltageexceeds approximately 125VAC. Depending on the set, some will strike the lamp indefinitely otherswill stop after 5 minutes. A defective lamp may never strike or take several minutes to light. Anotherindication of a defective lamp is when the lamp lights and after reaching full brightness it shuts off. Alamp nearing the end of life is verified by monitoring the lamp run voltage. The lamp is considered

TTI GIS 05-001 Page 5

defective if the run voltage is within a few volts of 125VAC. NOTE: As the lamp lights and heats upthe lamp run voltage climbs slightly.

WARNING: EYE DAMAGE MAY RESULT FROM DIRECTLY VIEWING THE LIGHTPRODUCED BY THE LAMP. ULTRAVIOLET RADIATION EYE PROTECTION IS REQUIREDDURING SERVICING.

Lamp Troubleshooting TipsLamp lights and shuts down:

• Thermo protection (poor ventilation)

• Lamp run voltage exceeding approximately 125V

Lamp intermittent or won’t light consistantly after 3 strikes:

• Remove Lamp assembly and check for loose connectors on lamp, tighten as needed.

• If the lamp successfully lights, check lamp run voltage. If over 120VAC, suspect lamp.

• During strikes, is the spark gap on the ballast supply arcing and making noise? Yes,suspect lamp. No, see Ballast Supply Troubleshooting.

• Lamp door open or defective lamp door switch

Lamp Ballast Supply Troubleshooting Tips1. Check to make sure all supply voltages are present at the lamp ballast supply.

2. Remove Lamp assembly from instrument

3. Start set and monitor spark gap on ballast supply

4. Is the ballast supply spark gap arcing and making noise? Yes, suspect Lamp. No, suspectballast supply.

NOTE: Measuring the lamp voltage during a strike will damage most meters. It is recommendedthat the lamp voltage only be measured when the lamp is lit.

HgThis symbol indicates that the lamp in the HDTV containsmercury. Disposal of these materials may be regulateddue to enviromental considerations. For disposal or recy-cling information, pleas contact your local authorities orthe Electronic Industries Alliance: www.eiae.org

TTI GIS 04-001 Printed In U.S.A.

Questions About New Technology?These may include training topics, trouble-shooting procedures, new technology over-views or just about anything that interests youin the world of consumer electronics. We'llreview all the suggestions and respond witharticles on the most popular responses.Please send your ideas and suggestions tothe address listed below.

The General Information Series (GIS) hasbeen developed to keep you up to date in therapidly changing field of consumer electron-ics. New technology is emerging continuouslyand the GIS newsletter has been created tokeep you informed in this ever changing in-dustry. To make this publication successful,we need your input! Your suggestions andideas are needed to make sure that we coverthe subjects that interest you.

Product Safety Information Product Safety information is contained in the appropriate Thomson Service Data covering models/chassis referenced herein. All specified Product Safety requirements and testing shall be complied with prior to returning equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury. First Edition First Printing Copyright 2003 Thomson multimedia Inc. Printed in U.S.A. Trademark(s) ® Registered Marca(s) Registrada(s)

Page 1 of 4

THOMSON INC.

Plug set in.Do not Press the power

button.

Do you hear the relayK24251 click ?

Check lamp interlock switch(J13101) and the 12VS

supply on J13101.

Does the power LEDlight and then turn off ? Suspect Power Supply.

Suspect DM-2CR Module.Continue to

page 2.

YES

YES

1A

2A 2B 2C

NO

Check the standby powersupplies to the DM-2CR.

+- 5,6,12,33 vdc onconnectors J24604,

J24605. Refer to Note 1

NO

1B

NOTE 1Refer to the serviceinformation for the

correct voltage & pin-outlocations.

NO

YES

2D

TFC-04004C

Television

THOMSON TECHNICAL COMMUNICATION

The information contained herein is provided solely to assist qualified Technician in the diagnosis of the problem described. It is not intended as a modification or alteration of the product.

Troubleshooting Flow Chart

TOPIC: DLP Troubleshooting

Model(s): ATC311 DLP HDLP (50, 60, 61) W151 or HD (50, 61) LPW42

REVISION DATE: 04/15/2005

SYMPTOM: Cycles, Shutdown, No Start

Press power button.

Does the power LED light upor flash and the relay click ?

Check the power supplyvoltages supplied to the

Formatter PCB. ConnectorBP503

Refer to Note 1

Continue to page 3

5A

4A

3A

6A

Check the FPA, IR Preamp,DM-2CR and inspect all

cables for proper seating.Replace any that appear to

have been stressed.

7AHookup Chipper Check

and review the errorcodes. Attempt a Hard-reboot. Refer to Note 2

YES

Are the voltages on theP1connector "Light

Engine"correct? Refer toChart 1 on page 4

Does the colorwheel spin or atleast attempt to

spin?

6B

Note 2The DM-2 reboot sequenceis Press & Hold "Pwr" and

"CH Down" at the same timeon the FPA for three

seconds.

4B

NO

NO

NO

YES

Disconnect J26403 (Audio +-21VDC) on the AC power

supply board. If the set runssuspect a problem on the audio

board

YES

5A

6A

7A 7B


Page 2 of 4

THOMSON INC.

Is the lamp lighting?

If missing, check thepower supply input to the

formatter board

Does the lampincrease up to full

brightness?

Is the voltage correct onJ4(1) connector? Referto Chart 2 on page 4

On J4(3,5) is the 5VRthere at turn on?

YES

Suspect DM2-CR Module

Suspect a defectiveLight Engine.

YES

8B

11A

YES

9B

9A

10A

8A

Suspect Lamp, Lamp ballastpower supply

10B

11B

Confirm that on the X1connector, (located on the

lamp ballast power supply),that the DC voltage is

~ 300 VDC.Also referencing Chart 2

measure the DC voltage onconnector J4 (4) on the "Light

Engine"

YES

NO

NO

NO

NO


Page 3 of 4

THOMSON INC.


Page 4 of 4

THOMSON INC.

CHART 1 BW902 P1

CHART 2

J4 Connector Pin Description DC voltages in

the off mode DC voltages at turn-on

DC voltages at run

1 Ballast Lamp Lit L H (5v) L 2 Ground L 0 0 3 5VR 0 5 5 4 Ballast Enable Line 0 2.5 3.25 5 5VR 0 5 5

Description Pin # Voltage Pin # Ground 1 0 12 5 VR 2 5 Vdc 11 Power Good 3 3.3 Vdc 10 Ground 4 0 9 2.5VR 5 2.5Vdc 8 2.5VR 6 2.5Vdc 7 Ground 7 0 6 Ground 8 0 5 3.3VR 9 3.3Vdc 4 3.3VR 10 3.3Vdc 3 Ground 11 0 2 12VR 12 12Vdc 1

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