v39-vlp39 training manual
TRANSCRIPT
Technical Training ManualIncluding…Down-to-1High Speed Troubleshooting
COPYRIGHT © 2008 MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.ALL RIGHTS RESERVED
T 20082009
ECHNICALRAINING
VLP39+ VLP39++ VLP39+++
LT-40148 LT-46149 LT-46246 (LDTV-146)LT-46148 LT-52149 LT-52246 (LDTV-152)LT-52148
LCD Flat Panel
V39- V39 V39+ V39++
WD-60C8 WD-60735 WD-65736 WD-65835
WD-65C8 WD-65735 WD-73736 WD-73835WD-73C8 WD-73735
DLP Projection
1080pDLP™PTV
1080pDLP™PTV
1080pLCD
Flat Panel
1080pLCD
Flat Panel
i
2008/2009Technical Training Manual
Table of Contents
INTRODUCTIONTable of Contents .................................................................................................................. iIntroduction ......................................................................................................................... iiiDisplay Technologies ........................................................................................................... iiiModels / Chassis ................................................................................................................. iiiFeatures & Technologies Overview ...................................................................................... ivProduct Line Features ......................................................................................................... viiTrademark Aknowledgements ............................................................................................ viii
PART I - DLP Projection ................................................................................................. 1-1-1Chapter 1: Option Menus, Service Adjustments, and Data Transfer ................................. 1-1-3Chapter 2: DLP Block Diagrams .................................................................................... 1-2-1Chapter 3: DLP Projection Down-to-1 Troubleshooting ................................................. 1-3-1Chapter 4: Disassembly ................................................................................................. 1-4-1Chapter 5: Parts Quick Reference .................................................................................. 1-5-1
PART II - LCD Flat Panel ............................................................................................... 2-1-1Chapter 1: Disassembly ................................................................................................. 2-1-3Chapter 2: LCD Block Diagrams ................................................................................... 2-2-1Chapter 3: LCD Projection Down-to-1 Troubleshooting ................................................. 2-3-1Chapter 4: Parts Quick Reference .................................................................................. 2-4-1
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III
IntroductionThis training manual will familiarize the service techni-cian with the latest features, technologies, service andalignment procedures for Mitsubishi’s DLP Projection& LCD Flat Panel product line for 2008-2009. It alsoincludes Mitsubishi’s Down-to-1 high speed trouble-shooting procedures.
Display TechnologiesThis training manual covers 2 of the 3 display technolo-gies used in the 2008-2009 product line:
• DLP Projection• LCD Flat Panel
Mitsubshi is also introducing Laser Television this year.This unique product, called LaserVue, will be coveredseperately in another training manual.
IntroductionMitsubishi’s 2008-2009
DLP Projection & LCD Flat PanelProduct Line
This Training Manual is divided to cover the 2 displaytypes separately. DLP Projection is covered in Part 1.LCD Flat Panel is covered in Part 2.
Model / ChassisLike last year, the 2008-2009 product line focuses onlarge screen sizes in compact cabinets. Taking that fo-cus a little further, the smallest DLP models have in-creased in size to 60” from last year’s 57” models. Abreakdown of DLP and LCD models by size and chas-sis is shown below.
The DLP based projection TV line includes 10 modelsthat in addition to the 2-60” models, includes 4-65”models and 4-73” models.
The LCD flat panel line-up includes 7 models in 40”,46” and 52” wide screen sizes.
Screen Size V39- V39 V39+ V39++
60" WD-60C8 WD-60735
65" WD-65C8 WD-65735 WD-65736 WD-65835
73" WD-73C8 WD-73735 WD-73736 WD-73835
DLP Projection - Models by Screen Size and Chassis
Screen Size VLP39+ VLP39++ VLP39+++
40" LT-40148
46" LT-46148 LT-46149 LT-46246
52" LT-52148 LT-52149 LT-52246
LCD Flat Panel - Models by Screen Size and Chassis
IV
Features & TechnologiesAn overview of the features and technologies used inthe DLP Projection and LCD Flat Panel product line isgiven below.
Video Features and Technologies:• Plush1080p® The native resolution for all
DLP Projection and LCD Flat Panel models is1080p. However they can display all video andmany computer resolutions. For resolutionsother than 1080p, the signal must be reformat-ted in order to best fill the TV screen. For asharp, clear picture, Mitsubishi developedPlush1080p™ technology. Using 12 bit digitalprocessing, it scales the picture precisely, withminimal side effects. And 1080i, currently themost common form of HDTV signal, is spec-tacular at 1080p. The conversion is precise,resulting in previously unachievable detail andclarity. In short, Plush1080p technology makeseverything else look better on a 1080p HDTV.
• Tru1080p™ Processing maintains 1080p highdefinition signals as 1080p from beginning toend. All 1080p HDMI™ and 1080p Broad-cast signals are passed through with no downconversions. The advancements of 1080p DLPtechnology for HDTV viewing deliver over 2million pixels to you on-screen for a full and true1920 x 1080 resolution. With Mitsubishi 1080pDLP® HDTVs, you can experience the bestthat high definition has to offer today and beready to enjoy all of the 1080p sources that areon the horizon.
• Color 4D Video Noise Reduction usesadvanced algorithms to better identify videonoise from fine detail and correct the signalrather than distort it. Video noise is caused bydistortions in the video signal and makes thepicture look grainy or snowy. As signal resolu-tions improve with the introduction of DVD,digital cable/ satellite and HDTV, the loss ofsharpness produced by most noise reduction
circuits becomes more noticeable. Mitsubishi’sadvanced 4D Video Noise Reduction correctsthe image in four dimensions: horizontally,vertically, within each frame and across multipleframes to provide an image that is crystal clearand extraordinarily detailed.
• 6-Color Processor™ Mitsubishi’s 6-ColorProcessor produces brighter colors, a widerrange of colors and whiter whites.
• PerfectColor™ is an exclusive Mitsubishifeature that provides the ability to adjust theintensity of six separate colors independently ofeach other and separately for every input.PerfectColor is much more powerful thanconventional color intensity control, which canonly increase or decrease the intensity of allcolors at the same time. While not new for thisyear, PerfectColor works in conjunction withPerfecTint™ to provide the user with the mostcolor control ever.
• PerfecTint™ is another exclusive Mitsubishifeature. It provides the ability to adjust the tintof six separate colors independently of eachother and separately for every input.PerfecTint™ is much more powerful thanconventional color tint control, which can onlyshift the tint of all colors at the same time.
• DeepField™ Imager constantly adjustsbrightness and contrast for optimum settings inall areas of the picture. It can even optimizecomplex scenes containing both dark and brightareas. DeepField™ Imager analyzes 135sectors of the picture in real time. It determinesthe optimum blend of contrast and brightnesssettings within the picture using advancedMitsubishi algorithms. Based on picture analysisit dynamically adjusts for areas that are too highor low in contrast and/or too dark or brightdisplaying the best balanced picture in everyscene.
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• Sharpedge™ is an edge-definition signalprocessing system. It enhances horizontal andvertical edges for stunning picture precision.
• Video Modes: Brilliant / Bright / Natural /Game The four picture video modes can beused to adjust for optimum viewing in differentroom lighting and gaming applications. Allmodes are accessible via the VIDEO key onthe remote control.
• Front and Rear HDMI™ 1.3a InputsHDMI (High Definition Multimedia Interface) isan uncompressed, all-digital audio/videointerface. HDMI provides an interface betweenan audio/video source, such as a set-top box,DVD player, or A/V receiver and the TV overa single cable. These inputs accept digital 480i,480p, 720p, 1080i, and 1080p video signalsplus PCM digital stereo signals. The HDMIinputs can also accept a variety of PC signalsand resolutions. These inputs support HDMI1.3 Deep Color (up to 36 bits), the x.v.Colorextended color gamut and the use of CECcontrol signals. Mitsubishi recommends theuse of category 2 HDMI cables, also calledhigh-speed HDMI cables, to connect HDMI1.3 source devices. These inputs areSimplayHD™ certified for properinteroperability with other products certified bySimplay™. Used with an adapter, the HDMIinputs also accept compatible digital DVI videosignals.
• x.v.Color™ Advances in the display technolo-gies used by Mitsubishi greatly expand ourTV’s color gamut capabilities. Thanks to thesedisplay technologies, the display’s capabilitiesnow exceed those of the color signal. For thatreason Mitsubishi helped define the newstandard in high definition color. x.v.Colorenables more color than ever before for breath-taking realism and vivid, natural colors. Thisextended color gamut standard can support 1.8times as many colors as existing HDTV signals.This removes all limits on color selection.
Mitsubishi’s 2008-2009 product line canprocess and display x.v.Color signals suppliedto either the HDMI or Component inputs.
• Deep Color Another color performanceimprovement technology is referred to as DeepColor. As defined, Deep Color offers 10- bit,12-bit or 16-bit color depth. Using a higher bitrate allows more accurate reproduction of theoriginal color signal.
Additional benefits include…• Reduction or elimination of artifacts
known as posterization or contouring thatresult in color bands when gradual colorchanges occur.
• Less signal degradation during signalprocessing such as scaling and gamma.
• Increased contrast ratios and better colordetail.
Mitsubishi’s product line has 12-bit per color(36 bit) signal processing. Higher bit ratesresult in smoother color transitions.
• Dark Detailer™ (DLP only) is a Mitsubishiexclusive technology that uses a dynamicaperture system to add depth and texture to thepicture. Dark Detailer improves contrast ratioby more than four times, giving you a widearray of colors and shades that are essential foroptimal viewing of dark, dramatic scenes whilealso providing maximum brightness.
• Smooth120Hz™ (DLP Only) reduces motionblur in action scenes but may show pixelstructure during slower motion or in still images.When Off, standard picture smoothing process-ing is employed
• Lamp Power (DLP only) For 2008-2009, allDLP models will have a 180W lamp with twomodes of operation, Standard, 156W andBright, 180W.
VI
• 10 Bit LCD Panel (LCD Only) has the abilityto deliver 64 times the level of colors than 8-bitpanels. The result is a smoother transitionbetween colors.
• Full Spectrum Color™ (LCD only) results in25% more color than standard LCD. Reds andyellows become brighter and more vivid, andthere are more available shades of Green,Cyan, and Blue. Mitsubishi uses a wider rangeof phosphors in its backlight system for a richer,fuller spectrum of colors. To fully utilize thisadded color range, Mitsubishi also recalibratedits color and brightness settings. The resultingpicture quality adds realism to yellow sunlight,blue skies and crimson sunsets.
• Smooth120Hz™ Film Motion (LCD Only)makes fast-moving images appear smootherand more fluid, free from motion blur. Thisfeature doubles the traditional progressive scanframe rate and creates new frames of videobetween the traditional frames to smoothmoving images. Smooth120Hz Film Motionalso smooths film judder (image vibration) thatmay be present in film-based content such asmovies. The Diamond series includes VariableSmooth Film Motion™.
Other Features and Technologies• Easy Connect™ simplifies set-up and day-to-
day use. During set up, when an external deviceis plugged in, the TV recognizes each input as itis connected. The TV then prompts the user toname the device, and enters it into the DeviceMenu. The Device Menu then only shows usedinputs.
• CEC Control Signals - Mitsubishi’s newNetCommand for HDMI 1.3a uses industrystandard CEC control signals to provide controlof other compatible devices such as DVDplayers.
• NetCommand® IR - This exclusive Mitsubishifeature provides the user with a true one–remote control home theater system for analogproducts. NetCommand IR® provides on-screen control of analog-connected productssuch as your AV receiver, DVD player, satellitereceiver, and VCR. To set it up, you simply“tell” the television what products are con-nected and “teach it” their IR (infrared) com-mands. The TV will then take control, eliminat-ing the coffee table clutter of remote controls.It’s capable of learning most IR remote controlcodes from standard home theater products,rather than relying on a preprogrammed libraryof codes.
• Front USB Input - For viewing photographsup to 5 mega pixels using a USB memory cardor USB Card Reader.
• Wired IR Input provides a wired connectionfor control from an external device.
• 3D Ready (DLP Only) This feature allows theability to be immersed in your favorite videogame, movie or sporting event. As more contentbecomes available in 3D, this functionality willdevelop into one of the most exciting HDTVexperiences. The 3D Glasses Emitter jack onthe back panel outputs timing pulses for theoptional 3D glasses that are used when viewing3D programmed content.
• CableCARD™ (LCD Only) A slot on theback panel allows the customer to receiveanalog and digital SD / HD cable programmingwithout the need for a cable box. This directconnection produces the best quality picturepossible as well as enabling simple systemcontrol.
• TV Guide® Daily (LCD Only) is an easy-to-use, 24-hour program guide with channellistings from RF sources (either antenna ordirect cable).
VII
• 16 Speaker Sound Projector and DolbyDigital™, Dolby Pro Logic™ Processing(LCD Only) built into the TV gives a true to lifesurround sound without bulky receivers oradditional speakers. It also includes a sub-woofer pre-output jack.
• High Fidelity Sound (LCD Only) is achievedby using improved speaker enclosures andinternal baffling.
• AMX Device Discovery interfaces the TVwith an AMX Controller to make it simpler andfaster than ever to program and control devicesalmost immediately upon plug-in.
• RS 232C (LCD Only) allows external RS-232C control communication.
Reliability and Serviceability Technologies• Reduction in the number of PWBs. The main
chassis is made up of only the PWB-POWERand PWB-MAIN. The DM, Signal, Terminaland uPC circuitry is all located on the PWB-MAIN.
CableCARD is a trademark of Cable Television Labora-tories, Inc.
Digital Light Processing, Digital Micro mirror Device, andDLP are trademarks or registered trademarks of TexasInstruments.
Dolby, Dolby Digital and Dolby Pro Logic are registeredtrademarks of Dolby Laboratories.
HDMI,the HDMI logo and High-Definition MultimediaInterface are trademarks or registered trademarks ofHDMI Licensing, LLC.
• The number of screws in both the cabinet andchassis construction has been reduced again thisyear.
• The different types of screws have beenminimized.
• Mirror Area Access Portholes have beencarried over to simplify cleaning.
• Electronic geometry correction has beenupgraded to include top and bottom correctionfor letterbox sized pictures.
• Engine replacement procedure is simplifiedby reducing the number of screws used in theDuct Assembly.
• LED diagnostics have been upgraded toinclude a “history log” to aid in identifying thecause of intermittent problems.
2008-2009 Product LineSpecifications
Specifications for the 2008-2009 product line are givenstarting on the following pages.
Simplay HD is a trademark of Silicon Image, Inc.
TV GUIDE and other related marks are registered marksof Gemstar-TV Guide International, Inc. and/or one ofits affiliates.
“x.v.Color” is a trademark of Sony Corporation.
6-Color Processor™, DeepField™ Imager, Easy Con-nect™, Full Spectrum Color™, Net Command®,PerfectColor™, PerfecTint™, Plush 1080p®,SharpEdge™, Smooth120Hz™, TurboLight™,Tru1080p™ are trademarks or registered trademarksofMitsubishi Digital Electronics America, Inc.
Trademark Information
VIII
V39- V39 V39+ V39++ VLP39+ VLP39++ VLP39+++WD-xxC8 WD-xx735 WD-xx736 WD-xx835 LT-xx148 LT-xx149 LT-xx246
Plush1080p® (12 bit) • • • • • • •Tru1080p™ • • • • • • •Color 4D Video Noise Reduction • • • • • • •6-Color Processor™ • • • • • • •PerfectColor™ • • • • • • •PerfecTint™ • •DeepField™ Imager • • • • •Sharpedge™ • •Video Modes: Brilliant/Bright/Natural/Game • • • • • • •
Rear HDMI™ Inputs w/SimplayHD™ 2 3 3 3 4 4 4Front HDMI™ Input w/SimplayHD™ 1 1x.v.Color™ • • • • • • •Deep Color (36 bit) • • • • • • •Dark Detailer™ •
Smooth120Hz™ •TurboLight™ • • • •10 Bit LCD Panel • • •Full Spectrum Color™ • • •Smooth120Hz™ Film Motion • • Variable
Easy Connect™ • • • • • • •CEC Control Signals • • • • • • •NetCommand® IR • • • • •Front (Side LCD) USB Input • • • • •Wired IR Input • • • • •3D Ready • • • •CableCARD™ • •TV Guide® Daily • •16 Speaker Sound Projector w/Sub-woofer Pre-out
•
Dolby Digital™, Dolby Pro Logic™ Processing •
High Fidelity Sound •AMX Device Discovery •RS 232C •
Other
Video Features
LCD Flat PanelDLP Projection
Features
1-1-1
Part 1DLP Projection
V39- ChassisWD-60C8WD-65C8WD-73C8
V39 ChassisWD-60735WD-65735WD-73735
V39+ ChassisWD-65736WD-73736
V39++ ChassisWD-65835WD-73835
Part 1 - DLP
1-1-2
1-1-3
Part 1 - DLP
Part 1-Chapter 1Option Menu, Adjustments & Data Transfer
Option MenuThe Option Menu is still featured and can be useful indiagnosing a problem. To access the Option Menu:
1) Press “MENU-2-4-7-0” in sequence2) The Option Menu is displayed.
Figure 1-1a shows the Option Menus for V39 models,and Figure 1-1b for V39+ and V39++ models.
The items listed in the Option Menu are:• INITIAL: Resets all user settings including V-
Chip data and password.• POWER RESTORE: Allows the TV to be
operated by switching AC power. (A factoryfunction)
• PRODUCTION MODE – Defeats Auto InputDetection, activates all Inputs. (A factoryfunction)
• DIGITAL SIGNAL STRENGTH – Informa-tion on digital signal reception (refer to Figure1-2).
• SOFTWARE – Current software version
The Wired IR feature in the V39++ and V39+++ en-ables the TV to be controlled by an external device via awired connection . High lighting the feature and pressing“ENTER” toggles the feature ON/OFF. If the externaldevice is disconnected while the TV is ON, it automati-cally defaults Wired IR to OFF.
Digital Signal StrengthTo access information on digital signal reception:
1) Tune to a digital channel.2) Enter the Option Menu and scroll down to high-
light Digital Signal Strength.3) Press “ENTER”
The table in Figure 1-2 will be displayed. The mostimportant figures are SQI, Signal Quality Index (0 to 100),and the SNR (Signal to Noise Ration). The acceptableSNR depends on the type of digital signal:
• VSB (Air Broadcast) = 15 to 35• Cable 64 QAM = 22 to 34• Cable 256 QAM = 27 to 37
OPTION MENU
Initialize:
Power Restore:
Production Mode:
Digital Signal Strength:
TV Software:
Total hours of use:
OFF
OFF
N/A
V39 xx.xxx
00079
MENU 2 4 7 0
OPTION MENU
Initialize:
Power Restore:
Production Mode:
Wired IR:
Digital Signal Strength:
Total hours of use:
OFF
OFF
OFF
N/A
00079
MENU 2 4 7 0
NetCommand Software: V39+ xx.xxx
Part 1 - DLP
1-1-4
This information helps determine if a digital signal prob-lem is due to reception or is a problem in the TV.
AdjustmentsThe adjustment procedures in the V39 chassis series aresimilar to last years models but features improved Key-stone distortion removal for 4x3 and Letterbox displays.
There are no mechanical adjustments, and only aminimal number of electrical adjustments. The electricaladjustments include:
• Horizontal Centering• Vertical Centering• Manual Keystone Adjustments
No additional test equipment is required to perform theadjustments other than the TV’s remote control. Testsignals are generated internally in the TV, and all adjust-ments are done the Service Adjustment mode. The Ser-vice Adjustment mode is also used to transfer data if theOptical Engine or PWB-MAIN are replaced.
There are two main Adjustment categories;1. Horizontal and Vertical positioning.
Figure 1-3: Adjustment Mode Display
Figure 1-2: Digital Signal Strength
Tuner 0 Tuner 1 OOB Tuner
Frequency (MHz): 597 0 0Signal Level: 8 0 0
Modulation: 256 QAM Unknown Unknown
Carrier Lock: Locked Unknown Unknown
SQI 100 0 0
SNR 34.3 0 0
Correctable errors: 0 0 0
UnCorrectable errors: 0 0 0
Example of Digital Signal Strength Display
Signal Quality
Index (0-100)
Signal Noise
Ratio
MENU + 2 4 5 7
ISF
Function TVM
Adjustment 1. HVPOS 65533 Data (HPOS)65530 Data (VPOS)
2. Manual Keystone adjustmentsHorizontal and vertical position (centering) should beadjusted first.
Horizontal & Vertical CenteringThe code to activate the Service Mode is the same aslast year’s DLP models. Using the remote control:
Press MENU-2-4-5-7 in sequence.
The Service Adjustment Mode screen is displayed asshown in Figure 1-3.
There are only two adjustment functions in the new DLPmodels, TVM and ASIC. Use the “AUDIO” button tochange the Adjustment Function. TVM is the only func-tion used for service adjustments.
Specific adjustments are selected with “VIDEO” but-ton. Select “1. HVPOS”, this is the Horizontal and Ver-tical Position adjustment.
Referring to Figure 1-3, the two numbers on the rightare the current data settings for the two position adjust-ments. The top number is the current HPOS setting, andthe bottom number the VPOS setting.
1-1-5
Part 1 - DLP
H & V Position Adjustments Procedure1) Enter the Service Adjust Mode.2) To activate the Test Pattern for Horizontal and
Vertical Positioning, use the “PLAY” and ‘RE-WIND” buttons to select the pattern shown inFigure 1-4 .Note: Press Rewind () or Fast Forward () to cycle through the internal testpatterns.
3) Use the () remote buttons to adjust verticalposition, and the () buttons to adjust hori-zontal position.
4) When the test pattern is centered on the screen,press “ENTER” to save the adjustment data.The display characters will turn red momentarilyindicating the data is saved.Note: If the Adjustment Mode is terminatedwithout pressing ‘ENTER” changes are notsaved.
5) Pressing “EXIT” terminates the AdjustmentMode.
Manual Keystone Mode DescriptionThere are two modes of Keystone Adjustments:Full Mode
1) 16 points at the edges of the test pattern are eachaligned to remove any keystone distortion
2) In the 4x3 and Letterbox modes the patternswith least distortion are selected for each dis-play type. There are 11 4x3 patterns, 15 TopLetterbox patterns, and 10 Bottom Letterbox pat-terns to choose from.
Touch Up ModeThe Touch Up Mode allows adjustment of only thosepoints needing adjustment in the 16 point test pattern. Italso enables different text pattern selection in 4x3 andLetterbox display modes.
RESTORE ALIGNMENT AND WHITE BALANCE SETTINGS FROM BACKUPRESTORE KEYSTONE GEOMETRY FROM BACKUPMANUAL KEYSTONE GEOMETRY ALIGNMENT
LOAD INDEX DELAY FROM ENGINECOPY SETTINGS TO BACKUP
WARNING - only use "COPY SETTINGS TO BACKUP" after replacing
PWB-TERMINALFigure 1-5
Figure 1-4: Centering Test Pattern
Overscan Alignment
YELLOWCYAN
GREENWHITE
RED
10%7%6%5%4%
…….…….…….…….…….
Part 1 - DLP
1-1-6
Keystone Adjustment Mode ActivationAfter activating the Service mode (MENU-2-4-5-7)press ‘“0”, the five choices in Figure 1-5 appear onscreen.
Use the () buttons to highlight “MANUAL KEY-STONE GEOMETRY ALIGNMENT”, then press “EN-TER”. The text pattern changes to that shown in Figure1-6.
There are 16 adjustment points indicated around the edgeof the test pattern, 15 dots and one cross in the upperleft corner. The cross indicates the current active adjust-ment point.
NOTE 1: If data is out of range, press “1” then
Figure 1-6: Keystone Adjust Pattern
ADUSTMENT
POINTS
(16 TOTAL)
CURSOR
Figure 1-7: Keystone Adjustments
4:3 Mode Lines
“INFO” to reset the data.NOTE 2: To restore original factory data, from theMENU in Figure 1-5, select “RESTOREKEYSTONE GEOMETRY FROM BACKUP”and press “ENTER”.
Full Adjustment Mode
Part 1: 16 Point Alignment ProcedureAfter activating the Keystone Adjustment Mode and TestPattern:
1. Starting with the first point (upper left corner),use the () buttons to align the cross flushwith the screen bezel, refer to Figure 1-7.NOTE: While making the adjustment the cross
1-1-7
Part 1 - DLP
moves but there in no change in the test pattern.2. Use Fast Forward () to select the next ad-
justment point. The cross will move to the nextselected point.
3. User the () buttons to align the secondpoint flush with the bezel.
4. Repeat steps 2 and 3 until all 16 point are aligned
5. After all 16 points have been aligned, press the() button again and the cursor will be at thestart location (there is no change in the display).
6. Press “ENTER”, correction data is automaticallysaved, and exits the Keystone Adjustment mode.
4:3 MODE
Select Straightest Blue Lines
7. Press “ENTER” to re-enter the Keystone mode.The Text pattern appears with corrections ap-plied.
Part 2: 4x3 Mode8. While in the Keystone Mode, press “VIDEO”
to activate the 4x3 Mode. The pattern is shownin Figure 1-8.
9. Use () and () buttons to cycle through11 4x3 preset patterns.
10. Select the pattern with the straightest blue linesthat are parallel to the Bezel edge.
Letterbox Mode
4:3 MODE
Select Straightest Red Line (Top)
Figure 1-8: 4x3 Mode Pattern
Figure 1-9: Top Letterbox Mode Pattern
Part 1 - DLP
1-1-8
11. Press “VIDEO” to a activate the Top Letterboxmode, refer to Figure 1-9.
12. Use () and () buttons to cycle through15 preset alignment settings. Select the settingwith the straightest top letterbox line (Red Line)that is parallel to the Bezel edge.
13. Press “VIDEO” to activate the Bottom Letterboxmode, refer to Figure 1-10.
14. Us the () and () buttons to step through10 preset patterns. Select the pattern with thestraightest bottom Letterbox line (Red Line) thatis parallel to the Bezel edge.
15 Press “ENTER” to save data and exit the mode.
Touch Up Adjustment ModeIf only minor keystone adjustments are needed, use theTouch Up Adjustment Mode. The 4x3 and Letterboxadjustments can also be changed in the Touch Up mode.This mode will be used mainly when servicing.
Touch Up Adjustment Procedure
4:3 MODE
Select Straightest Red Line (Bottom)
Figure 1-10: Bottom Letterbox Mode Pattern
NOTES __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
1. Enter the Keystone Manual Geometry Alignmentmode.
2. Use the () or () buttons to move thecross to a point needing adjustment.
3. Use the () buttons to adjust that point.(Only the cursor moves, the test pattern doesnot change)
4. Press the “INFO” button to apply the correc-tion, the test pattern will show the correction.
5. Repeat steps 2 through 4 to adjust another point.Repeat for as many points as needed.
6. Press “ENTER” to save the changes, exit theKeystone Mode.
7. Press “ENTER” to re-enter the Keystone Mode.8. Press “VIDEO” to select the 4x3 or Letterbbox
mode.9. Use () or () buttons to select another
pattern and press “ENTER” to save the changesand exit the mode.
Data Transfer
1-1-9
Part 1 - DLP
If the Optical Engine or PWB-MAIN are replaced, datatransfer or restoration is necessary. Data Transfers aremade in the Service Mode.
After entering the Service Mode (MENU-2-4-5-7) andpressing (0), besides MANUAL KEYSTONE GEOM-ETRY ALIGNMENT four data transfer choices are listedon screen.
• Restore Alignment and White BalanceSettings - copies HV Position, White Balanceand Engine Color Wheel Delay data from theEngine to the PWB-MAIN.
• Restore Keystone Geometry from Backup -copies manual adjustment data from the Engineto PWB-MAIN.
• Load Index Delay from Engine - copiesEngine data to PWB-MAIN..
• Copy Settings to Backup - copies settingsfrom PWB-MAIN to the Engine.
After Engine Replacement1) Load Index Data from Engine.2) Copy Settings to Backup
After PWB-MAIN Replacement1) Restore Alignment and White Balance fr om
Backup2) Restore Keystone Geometry Alignment3) Load Index Delay from Engine
Part 1 - DLP
1-1-10
1-2-1
Part 1 - DLP
Part 1-Chapter 2Circuitry Block Diagrams
Figure 2-1: Main Power Supply
1-2-2
Part 1 - DLP
Power SupplyThe main Power Supply circuitry is on PWB-POWERand is similar to last years Power Supply. A simplifieddiagram of the Power Supply circuitry is illustrated inFigure 2-1.
The initial Standby Supplies generated on PWB-POWERare:
• 21VA – the power source the Audio Outputcircuitry, increase from 18VA in last yearsmodels.
• 12VSL – the source for the 12V Engine supplyand the source for the supplies generated on thePWB-MAIN.
The Ballast 340V supply is also on PWB-POWER. TheLAMP-RELAY command activates the 340V supply.Initial current for the supply is limited by R9A02 in serieswith the AC source. The LAMP-RELAY command ap-
plied to Q9A08 is delayed slightly by C9A47. After thedelay relay K9A21 closes, removing R9A02 from thecircuit.
DC/DC SuppliesThe additional Power Supplies generated on the PWB-MAIN are shown in Figure 2-2. The supplies are DCto DC supplies, all generated from the 12VSL from thePWB-POWER. These supplies include:
• 30V, tuning voltage supply for the Tuner.• 5VSL & STBY 5VS• 9VS• 3.3VS, 3.3V, & 1.2VS, supplying power to
most of the circuitry on the PWB-MAIN.• 5V, for the 3D External Game connection
NOTE: The supplies activated by the STBY com-mand are not active when the TV is Off in the LowPower Mode.
Figure 2-2: PWB-MAIN DC to DC Supplies
1-2-3
Part 1 - DLP
Video Signal PathThe Video Signal Path can be divided into analog anddigital source video paths.
Analog Video Signal PathFigure 2-3 illustrates the Analog Video path in the V39chassis. Analog source signal selection circuitry is nowon the PWB-MAIN. IC2J01 selects the desired signalsource. The possible analog sources are:
• Broadcast or cable signal from the Tuner.• Composite or S-Video (Y/C) video from a rear
External Video Input.• Component format signals from a front or rear
Component Input.
Component format signals are the source, the signalsconverted to digital in IC7E01 and then directed to theIC7G00.
When the source is composite video or S-Video (Y/C),signals are directed to the CORE IC8001, and internallyare processed by an A/D Converter. The digital signalsare then processed by a 3DYC Comb Filter and NTSCDecoder. The resulting digital component signals are con-verted to analog, output from the CORE IC8001 andapplied to A/D Converter IC7E01.
The digital output of IC7E01, either the component sig-nals from IC2J01 or the component signals from IC8001,are applied to the SPA3, IC7G00. IC7G00 processesthe video and color signal, performs noise reduction, linedoubling and converts the signals to 1080p.
Figure 2-3: V39 Analog Video Signal Path
NOTES _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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Part 1 - DLP
Digital Video Signal PathThe Digital Video signal path is illustrated in Figure 2-4.A digital source is selected by circuitry on the PWB-MAIN. It may be an HD signal from:
• the Tuner• one of the rear HDMI inputs• the HDMI front input
HD digital signals from the Tuner are processed inIC8001 and directed in a 656 digital format to IC7G00.The other digital sources possible are HDMI inputs, thereare three in the rear of the TV and in V39+/V39++models one in the front.
IC2101 selects the source from any of the rear HDMIinputs. IC2001 is the HDMI Processor and also se-lects either the signal from IC2101 or the front HDMIinput. The output of IC2001 is directed to IC7G00 forsignal processing and conversion to 1080p. The outputfrom IC7G00 is processed by IC7C00 generating DVIdrive for the Optical Engine.
There are changes in the Digital Video path in the V39chassis from last years models. The changes are due tothe change in the features offered, and a new ASIC SPA3IC.
• No Double Window display is featured.• There are no 1394 inputs• 120Hz smooth picture circuitry is in IC7G00.
Figure 2-4: V39 Digital Video Signal Path
NOTES _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
1-2-5
Part 1 - DLP
Figure 2-5: V39 Sound Signal Path
Audio Signal PathAnalog Audio Source PathFigure 2-5 illustrates the audio signal path. The audiosignal path is the same for all three chassis types. IC2J01selects an analog signal source, from the Tuner or one ofthe External Inputs.
The selected analog audio signal is converted to digital inIC3A01 and is processed further in IC8001. The out-put from IC8001 is processed in IC3P01 and convertedto analog in IC3D03. The analog signal is directed overtwo paths:
1) To IC2J01 as a source for the AVR Outputs.2) Is amplified in IC3E02 and directed to the TV’s
speakers.
Digital Audio Source PathThe digital audio source can be a HD signal from theTuner or from one of the HDMI inputs. Digital signalsfrom the Tuner are processed in the CORE IC, and out-put as an I2S serial format signal that is converted toanalog and directed to the TV’s speakers. The COREIC also outputs the signal in an SPDIF format and di-rects it to the Digital Audio Output jack.
When the source is an HDMI input, the signal is pro-cessed in IC2001 and is output in an I2S format anddirected to the CORE IC as a source for the set’s speak-ers. IC2001 also outputs the signal in the SPDIF formatas a source for the Digital Audio Output jack.
1-2-6
Part 1 - DLP
Figure 2-6: Overall Control Circuitry
V39 Overall Control CircuitryThe Overall Control Circuitry can be condensed to asingle block diagram, as shown in Figure 2-6. The TVμPC (IC7A01) and DM μPC (in IC8001) communicatewith each other through IC8307 and IC8312.
The TV μPC receives user commands from the FrontPanel and the Remote Control. Serial data lines fromthe TV μPC control:
• Signal Select circuitry and the Main A/D Con-verter are controlled by the SDA and SCLlines.
• Optical Engine is controlled by the ENG- SDAand ENG-SCL lines.
• The LED Blaster output. (V39+ Only). This isalso the input for a wired remote connection.
The DM μPC is in the CORE IC, IC8001. ThroughIC8312 it controls IC7G00 the SPA3 IC, and via theI2C DATB and I2C CLKB lines, controls the:
• Tuner• HDMI• Audio
NOTE: IC2E01 generating SYS5 IR blaster drive isonly used in the V39+ chassis.
The E2PROM back up memory that was on PWB-TERMINAL last year is now in the Optical Engine.
1-2-7
Part 1 - DLP
Figure 2-7: Input/Output Auto Detect Circuit
Auto Input SensingThe Auto Input Sensing circuitry is illustrated in Figure2-7. Analog inputs, Video, S-Video (Y/C) and Compo-nent inputs are sensed by an internal switch in the jacks.The switches are located in Video, S-Video (Y/C) andComponent Y jacks. The front panel V/Y input is usedas a video input and as the Component Y input.
To indicate if the Front Panel inputs are connected to acomponent signal source, an additional switch is used inthe Pb input jack, YUV-SW. The logic from the V/Y-SW indicates when the Front Panel inputs are used, andthe logic from the Pb-SW indicates whether or not thesource is a component signal.
The analog signal sensing switches are connected to in-put on IC2J01 and the data is sent to the TV μPC,IC7A01, over the SDA data line.
The External Digital inputs are the three HDMI inputs onthe rear of the TV and, a front panel HDMI input in theV39+ chassis. When connected to an HDMI source,the source places 5V at pin 18 of the HDMI connector.This voltage is connected to specific inputs on the TVμPC, indicating when an HDMI input is being used.
The Auto Sensing Feature also senses if a unit is con-nected to the Digital Audio Output (SPDIF). An internalswitch in the jack is connected to pin 60 of IC7A01 andindicates this output is being used.
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Part 1 - DLP
Figure 2-8: Short Protect Circuitry
NOTE: Lamp Control (Figure 2-8), Short Protect(Figure 2-9) and (Figure 2-10) circuitry are basically
the same as last years models, and are covered in detailin the Troubleshooting chapter.
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Part 1 - DLP
Figure 2-9: Short Detect Circuitry
Figure 2-10: Engine Protect Circuitry
1-2-10
Part 1 - DLP
1-3-1
Part 1 - DLP
Part 1-Chapter 3Down to 1 Troubleshooting
Troubleshooting today’s products is mainly down toboard level, the Down to 1 Troubleshooting pro-cedures are still valid and:
• Require a minimum amount of time.• A minimum amount of test equipment.• Makes an accurate diagnosis 9 out of 10
times.
User Resets and InitializationAs in previous models many symptoms (customer gen-erated or intermittent) may be resolved by performingresets or initialization from the front panel. By asking the
user to perform these resets may eliminate the need for aservice call. To reset all A/V settings press the front panelFORMAT and GUIDE buttons at the same time. A Sys-tem Reset can be performed by pressing the Front PanelReset button.
Pressing MENU-1-2-3 in sequence on the Remote, re-sets all user settings except the V-Chip. Resets andIntializations are not new features and are only mentionednow as a reference. The Complete Intialization/Resetlist in shown in Table 3-1.
Complete Initialization Reset List
Table 3-1: Initialization and Reset List
Reset Name When to use How to use Resulting ActionRemote Control TV
Layer Reset
Returns the remote control
TV layer to normal operation.
(1)
(2) (3) (3)
Set the slide switch to TV position.
Press and hold the POWER button until it
flashes twice then release the button.
Enter the code 0 0 9 3 5.
Resets the remote TV layer.
Remote Control TV Volume/Mute functions
Returns the remote volume and mute control to the TV after using AV Receiver
Audio Lock.
(1) (2) (3)
(3)
Set the slide switch to TV position.
Press and hold the POWER button unti l it flashes twice then release the button.
Enter the code 9 9 3 VOL UP.
Volume and Mute are performed by the TV.
A/V Memory Reset,
by individual input
When the audio and or
video settings for a single input seems to incorrect
MENU --> Audio/Video--> AV Reset All A/V settings for that input are reset
except fListen To, Language, Balance and Closed Caption .
A /V Reset, all
inputs
Resets A/V settings for all
inputs are reset.
With the TV, press the front panel GUIDE +
FORMAT buttons at the same time.
All inputs A/V settings are reset to the
factory default settings..
System Reset No response from the Remote or front panel
buttons.
Press the the front panel SYSTEM RESET
button.
TV Micro Re-boots. Note: The only recent user setting changes may be
lost.
Initialize User Level To reset all customer settings except V-Chip
Press MENU - 123 - ENTER All customer menu settings except V-Chip are reset to factory default.
Initialize - Service
Level
To reset all customer
settings
MENU - 2470. Highlight INITIALIZE and press
ENTER
All customer menu options and A/V
settings are reset.
V-Chip Password Bypass
If V-Chip password is not known
Press QV + 9 at the same time. by passes V-Chip password.
Unlock Front Panel Front panel buttons are inoperative.
Press and hold the front panel MENU button
for 8 seconds.
Front Panel becomes operational.
Part 1 - DLP
1-3-2
Operating the TV with the RearCover Removed
Troubleshooting may require access to the chassis or Op-tical Engine while the TV is operating. The Lamp Switchon the Engine assembly senses when the Lamp Cover(mounted on the back) is removed and prevents the TVfrom being switched On.
To enable TV operation with the rear cover removed:1) Remove screw (A) remove the Lamp Cover from
the rear cover, refer to Figure 3-1.2) Mount the Lamp Cover on the base of the Opti-
cal Engine assembly with two of the rear coverscrews, Figure 3-2.
Even though the Lamp Cover is lower than normal, it isdesigned to still activate the Lamp Switch. The TV canthen be switched On with the rear cover removed.
NOTES:______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Figure 3-1: Lamp Cover Removal
Figure 3-2: Remounting the Lamp Cover
1-3-3
Part 1 - DLP
Table: 3-3
Power/Timer
LEDStatus LED Lamp LED Condition
Off Yellow OffHigh temperature high - room temperature is too hot, or the temperature sensor is disconnected
Off OffBlinking Yellow
Lamp cover open.
Lamp Failure - Lamp failed to turn On.Off Off Red* Lamp is broken
Lamp turns Off during P-ON
Off Blinking Red Off Fan Stopped
Circuit failure (short)
Disconnected DVI cable, chassis to engineOff Red Off No LAMP-EN signal from Engine to turn
the lamp On.Ballast UART communication problem.
* A red Lamp LED only occurs after 2 attempts to light the lamp. Each attempt (pressing POWER) must be at least 65 seconds apart. .During each attempt ballast striking may be audible.
ABNORMAL LED INDICATIONS
LED DiagnosticsThe Front Panel LEDs provide an indication of the set’soperation, and the possible cause of a malfunction. Thethree front panel LEDs are shown in Figure 3-3.
Power/Timer
LEDStatus LED Lamp LED Condition
Off Off Off Off (Standby)
Fast Blink
GreenOff Off Init ialization (10 - 65 seconds) (AC Off)
Off OffGreen Fast
Blink
Lamp cooling (1 minute after PTV Off) (Fan
is still working)Green Off Off Power On
Blinking Green Off Off Power On Timer is set
NORMAL LED INDICATIONS
Table 3-2 shows the normal LED indications, and Table3-3 the abnormal indications, indicating the possible causeof problems.
Table: 3-2
LAMP STATUS TIMER POWER
Figure 3-3: LEDs
Part 1 - DLP
1-3-4
Error Code Operational CheckAs in previous models the Error Code feature helps de-termine the reason why the TV Shut Down. To use theError Code feature the TV must be in “Shut Down”.When the TV is switched off, the code automatically re-sets to “12” No Error.
Error Code Procedure1) Press the front panel “INPUT” and “MENU” but-
tons at the same time, and hold for 5 seconds.(Front panel buttons must be used, not those onthe remote)
2) The Power LED starts flashing a 2 digit Error Code.3) First the number of flashes indicates the value of
Table 3-4: Error Codes
the MSD (tens digit) of the Error Code.4) The Flashing will pause for approximately ½ sec-
ond.5) The LED then flashes the value of the LSD (ones
digit) of the Error Code.6) The Error Code is repeated 5 times
Example: If the Error Code is “32”, the LED willflash 3 times, pause, and flash 2 times.
Table 3-4 lists the Error Codes, the code descriptionand the most likely cause. Figure 3-4 shows the loca-tion of the Optical Engine connectors that may be thecause of a problem.
Code Description Most Likey Cause
12 No Error found
17 Communication loss, TV Micro - Engine (3.3V-ENG-SDA & SCL) Engine Failure
Loss of 12V from PWB-POWER (Loose
18 Engine will not accept data (ASIC-READY signal from Engine is not PE or PE2 connector); Bad Color Wheel
detected). (Loose J6 or J7 connector); Engine
Failure
32 Lamp cover is open. Lamp Cover Switch; Loose CD connector
Lamp turns Off while the TV is playing.34 Lamp failure Lamp Cartridge Failure
(Lamp Enable signal from engine is lost)
36 Exhaust Fan failed. Loose J4 connector
37 Engine (DMD) fan failed. Loose J5 connector
38 Lamp temperature abnormally h igh. Poor Air Circulation; Loose J3 connector
39 DMD temperature abnormally high. Poor Air Circulation
41 Standby Supply Short is detected. (5VS or 3.3VS) PWB-MAIN Failure
42 Sirocco fan failed (Lamp fan). Loose J8 connector
Check for disconnected DVI cable between PWB-MAIN and Engine.
(Engine pulls DVI pin 14 Low)
48 PON-SHORT 3.3V switched supply short PWB-MAIN Failure
57 Ballast communication problem (ballast to chassis)
Loss of 340V from PWB-POWER (PL or
CJ1 connector); Loose FB or CJ3
connector; Ballast Failure
61No LAMP-EN output from the engine to the ballast Bad Color Wheel (Loose J6 or J7
connector); Engine Failure
Lamp did not turn on at P-ON sequence Loose CJ4 connector;
66 (No Lamp inserted) No Lamp Inserted;
(Disconnected cable between ballast and lamp) HV connection or lead wire to lamp;
(Lamp-Enable goes to DM but not to Ballast) Lamp Cartridge Failure
44 DVI Cable unplugged
ERROR CODES
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Part 1 - DLP
Figure 3-3: Optical Engine Connectors
Figure 3-4: DVI Connector Related Error Codes
Code Description 17 Communication failure between Engine and TV Micro (Poor connection at pins 6 & 7) 18 TV Micro does not receive ASIC READY from Engine (Poor connection at pin 4) 44 DVI cable is Disconnected (Poor connection at pin 14)
DVI Related Error CodesError codes 17, 18 and 44 may be due to a poor DVIcable connection at the Engine or the chassis. As shownin Figure 3-4 the resulting code depends on the location
of the poor DVI connection. Poor connections at DVIpins 6 or 7 result in code 17. If at pin 4 the code is 18,and if at pin 14 the code is 44.
Part 1 - DLP
1-3-6
ERROR CODE LOGThis is a new feature to assist in servicing. It sometimesis helpful to know error codes that have occurred in thepast. The DLP models maintain a history of error codesin a memory log.
To access the Error Code Log:Press <MENU><3564>
Error Code Definitions• Page - Current page number• Current Time - total hours of operational use.• Lamp Time - usage hours when the error occurred.• Code - the specific Error Code that occurred.• Two types:
OCCURRENCE - when the error occurred.RECOVERY - when normal operation resumed.
Error Code Log
NOTE: The codes for short circuits that disable the μPC are not able to be stored in memory. In DLP models these codes are 41, and 48.
NOTES:___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
***** PAGE (002/002) *****CURRENT TIME: 01455 HOURS
LAMP T IME CODE STATUS
00413 HRS 57 OCCURRENCE
00413 HRS 57 RECOVERY Press Up to Previous Page
00716 HRS 32 OCCURRENCE
00716 HRS 32 RECOVERY Press Right to Top Page
00905 HRS 61 OCCURRENCE
00905 HRS 61 RECOVERY Press CANCEL to Initialize
Press MENU to Exit
1-3-7
Part 1 - DLP
Figure 3-6: Ballast Connections Location
Ballast ProblemsIf the TV does not come on, and the resulting Error Codeis 57, it indicates a Ballast problem. In previous modelsyou could determine if the Ballast was working by listen-ing for arcing when power was applied. There is no arcgap in the new Ballast circuitry so an arcing sound can-not be used to determine if the Ballast is functioning.
Before ordering a new Ballast check all connections andvoltages to the Ballast. Figure 3-5 shows the connec-tions to the Ballast. Check for 5V at pin 3 of CJ3 and340V betwwn pins 1 and 5 of CJ1. If both voltages are
Figure 3-5: Ballast Connections
present check for a postive pulse at pin 4 of CJ3 whenpower is applied.
Neither the Ballast nor the Engine have to be removed toaccess the CJ3 and CJ1 connectors on the BALLASTPWB. Figure 3-6 shows the location of both connec-tors, and the red wire connecting to CJ3 pin 1.
Check the 5V and 340V sources if they are missing. If apossitive pulse does not occur at pin 1 of CJ3 the Enginemay be at fault.
CJ1
CJ3
Part 1 - DLP
1-3-8
In previous DLP units, if the Color Wheel was defectiveor noisey the Optical Engine had to be replaced. In thenew DLP models the Color Wheel is replaceable.
.Symptoms• Noise - Bad Motor Bearing• Solarized Picture (color distortion) - Before
replacing the Color Wheel, try adjusting theIDL (Index Delay), refer to page 3-8 for thealignment procedure.
Replacement ProcedureCAUTION: This procedure should be done in a dustfree environment. Any dust entering into the color wheelchamber can cause abnormalities in the picture.
1) Remove Engine assembly from the back of theunit.
2) Cover the projection lens to protect it fromscratches and remove the TOP DUCT.
3) Remove the 2 screws (A) as shown inFigure 3-7.
4) Disconnect the 2 connectors (B) as shown inFigure 3-7 and 3-8 (J6 & J7).
5) Lift the top cover to the color wheel chamber
Color Wheel Replacement(Part #938P137010)
BA
Figure 3-7: Color Wheel Cover RemovalJ6 J7
Figure 3-8: Color Wheel Connectors
1-3-9
Part 1 - DLP
Handle
Index Delay Adjustment1) Once TV is reassembled and operating press <MENU 2457> followed by the <PLAY>button.2) Press the <RWND> button 3 times to access the RAMP test pattern (Figure 3-11).3) Press Video button until item #60.IDL is shown.4) Adjust IDL value until RAMP pattern color bars are smooth and solid.
(Hint: Final value is typically in the mid 30’s)
Replacement Procedure (continued)6) Remove 3 screws (C) as shown in Figure 3-9.7) Hold the color wheel by the handle and pull it from
the chamber.
8) Install the new color wheel and reverse the aboveprocedure making sure to not scratch thewheel or allow dust inside the chamber
C
Handle
Figure 3-9: Mounting Screws
CAUTION: Do not twist the ribbon cableto J6 (the shiny silvery contacts must befacing up), refer to Figure 3-10.
RIBBON CABLE
Figure 3-10: Ribbon Cable
(White)
(Red)
(Green)
(Blue)
Figure 3-11: Ramp Test Pattern
Part 1 - DLP
1-3-10
Engine Protect CircuitryProblems detected by the Engine Protect circuitry areindicated by the following Error codes.
• 36 – Exhaust Fan failure.• 37 – Engine DMD Fan failure• 38 – Lamp temperature abnormally high.• 39 – DMD temperature abnormally high.• 42 – Sirocco Fan failure.
The Engine Protect circuitry is illustrated in Figure 3-12.If the Error Code indicates a fan failure, check that fan’sconnector and the power source voltage at that connec-tor.
The connectors are:• Exhaust Fan – connector J4• DMD Fan – connector J5• Ballast Fan – connector J8
The locations of the fan connectors are shown in Figure3-3.
An excessive Lamp or DMD temperature indication,with no fan failure is probably caused by poor air circu-lation. Make sure there is no air blockage. It could be adefective or disconnected Temperature Sensor, checkthe J3 connector.
Figuer 3-12: Engine Protect Circuit
NOTES __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
1-3-11
Part 1 - DLP
Short Protect CircuitryThe Short Protect circuitry is shown in Figure 3-13.There are two short Protect circuits:
1) STBY-SHORT – monitoring the 5VS and 3.3VSsupplies.
2) PON-SHORT – monitors the 3.3V supply.
A short on either the 3.3VS or 5VS standby supplieswill pull the STBY-SHORT line low. If there is a short in
Figure 3-13: Short Protect Circuit
the 5VS supply the STBY-SHORT line is pulled lowthrough D9G06. If the 3.3VS supply is shorted or miss-ing the is no positive supply for pin 40 of IC7A01.
If the short is in the 3.3V supply, or there is a loss of the3.3V supply, the 3.3 volts at pin 111 on IC7A01 is re-moved, indicating a loss of that supply.
NOTES ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Part 1 - DLP
1-3-12
1-4-1
Part 1 - DLP
Part 1-Chapter 4Disassembly
This chapter offers general disassembly procedures forthe DLP Projection models. There are slight differencesbetween models, therefore refer to the Service Manualfor a more detailed description.
Rear Cover RemovalFigure 4-1 shows the screws that must be removed totake off the Back Cover.
1) Remove screw (A) to remove the Lamp cover.(This prevents damage to the Lamp Switch duringback removal and installation.)
2) Remove screws (B) to remove the Back cover(There is one additional screw (C) on the 73 inch
models.)
Chassis RemovalWith the Back Cover removed remove the 4 screws (A)shown in Figure 4-2. Then disconnect all cables con-necting to the chassis. It is easier to disconnect the DVIcable connecting the chassis to the Optical Engine at theEngine. Then slide the chassis from the cabinet.
Figure 4-1: Back Cover Removal
Figure 4-2: Chassis Removal Screws
1-4-2
Part 1 - DLP
Figure 4-3 is an exploded view of the chassis compo-nents. There are two main PWBs:
• POWER … contains the main Power Supplyand the Ballast 340V supply.
• MAIN … most of the TV’s circuitry, analog &digital
In addition to the two main boards, in the V39+ chassisa front HDMI PWB is mounted on the chassis. Referto the Service Manual for the number and location ofscrews to disassemble the chassis. There are some dif-ferences between models.
Optical Engine RemovalThe Optical Engine and its’ sub assemblies can be re-moved from the cabinet as a single unit. With the BackCover removed, remove the three screws (C) shown inFigure 4-4.
Disconnect all cables between the chassis and the En-gine Assembly, shown in Figure 4-4a. Then slide theEngine and the sub assembly from the cabinet.
Figure 4-4: EngineAssembly Removal
PWB-POWER
PWB-MAIN
SHIELD-HDMIPWB-HDMI
Figure 4-3 Chassis Exploded Veiw
1-4-3
Part 1 - DLP
Figure 4-5 is an exploded view of the Engine sub as-sembly, which must be removed for Engine replacement.
Figure 4-5: Sub Engine Assembly (Exploded View)
The following is the procedure for removing the sub as-sembly from the Engine
Figure 4-4a: Engine Connectors
Bottom Duct
Engine
Sirocco Fan
Exhaust Fan
Top Duct
Holder Fan
Ballast
1-4-4
Part 1 - DLP
Figure 4-6: Lamp Cartridge Removal
Figure 4-7: Lamp Cartridge Removal Figure 4-8: Lamp Cartridge Removal
Engine Removal Procedure.Upper Duct Assembly Removal
1) Loosen two screws (a) and remove the LampCartridge (Figure 4-6)
2) Disconnect the Exhaust and Sirocco Fans, con-nectors J4 and J8. (Figure 4-4a)
3) Remove three screws (b) from the top of theDuct assembly. (Figure 4-7)
4) Release the seven locking snaps shown in Figure4-7.
5) Carefully remove the upper Duct assembly. Fig-ure 4-8 shows the top of the lower Duct assem-bly with the upper Duct removed. At this pointthe Sirocco and Exhaust fans can be replaced.(The Ballast can be replaced without removingthe Engine or the upper Duct.)
1-4-5
Part 1 - DLP
Figure 4-10: Engine Assembly Lower Duct Front Mounting Screw
Lower Duct Assembly Removal(Not required unles the Engine is replaced)
1) Remove two screw (C), one in the front and onein the rear of the Lower Duct. (Figure 4-9 and 4-10)
2) Carefully remove the lower Duct from the Engine.
ENGINE REPLACEMENT (Reverse the Removal
Figure 4-9: Engine Assembly Lower Duct Rear Mounting Screw
Procedure)1) Install the Duct assembly on the new Engine.2) Remove the Protective Lens Cover from the face
of the Lens.3) Install the engine in the Cabinet.4) After installation refer to page 1-7 and:
• Load Index Delay Data Engine• Copy Settings to Backkup
5) Adjust Centering and Manual Keystone Adjust-ment if necessary.
1-4-6
Part 1 - DLP
Figure 4-11: Ballast Removal
Figure 4-12: Front Screen Assembly Screws
Screen Replacement1. From the front, remove screws (A) holding the
bezel. (Figure 4-12)2. From the rear, remove the screws (B) along the
top and sides of the cabinet. (Figure 4-13)3. Pull the Screen Assembly from the Cabinet.
4. Remove screws (A) from the top, bottom andside rails, remove the rails and screens from theBezel. (Figure 4-14)
Ballast Removal Procedure(Refer to Figure 4-11)1) Remove screw (A) from the Ballast
support and screw (B) if the Engineis still mounted in the cabinet.
2) Slide the Ballast Assembly out therear of the Engine assembly andunplug the Lamp connector (C) atthe Ballast.
3) Disconnect connectors CJ1 andCJ3.
4) Remove screw (D) to remove thePWB-BALLAST from the BallastSupport.
Reverse the procedure to install anew Ballast .
1-4-7
Part 1 - DLP
Figure 4-13: Rear Screen Assembly Screws
Figure 4-14: Screen Removal From Bezel
65 Inch Screen
1-4-8
Part 1 - DLP
1-5-1
Part 1 - DLP
Part 1-Chapter 5DLP Parts Quick Reference
PART PART NUMBER
Lamp-Cartridge 915B403001
Lamp Ballast 938P127010
Speaker 480P084010
Fan-Exhaust 299P310020
Fan-Scirocco (Lamp) 299P321010
Fan-Engine (DMD) 299P339010
Sensor-Temperature 299P337010
PW B-SW-LAMP 935D985001
W HEEL-COLOR-MODULE 938P137010
ALL MODELS
MODEL PWB-MAIN PW B-POW ER PWB-FRONT1 PWB-CONT1 PW B-PREAMP
W D-60735 934C282001 934C283001 935D981001 935D982001 935D984001
W D-60C8 " " " " "
W D-65735 " " " " "
W D-65736 934C282002 " " " 935D984002
W D-65835 934C282003 " " 935D982002 "
W D-65C8 934C282001 935D982001 935D984001
W D-73735 " " " " "
W D-73736 934C282002 " " " 935D984002
W D-73835 934C282003 " " 935D982002 "
W D-73C8 934C282001 " " 935D982001 935D984001
PRINTED CIRCUIT BOARDS
MODELOPTICAL
ENGINE
FRESNEL
LENS
LENTICULAR
SCREENMIRROR KIT REMOTE
W D-60735 938P126040 491P2180010 491P217010 KIT-MIR 767D086010 291P137010
W D-60C8 " " " " "
W D- 65735 938P126050 491P218020 491P217020 KIT-MIR 767D086020 "
W D-65736 " " " " "
W D-65835 w/DB 955B378001 " " KIT-MIR W D65835 290P137020
W D-65C8 938P126050 " " KIT-MIR 767D086020 291P137010
W D-73735 938P126060 491P218030 491P217030 KIT-MIR W D73735 "
W D-73736 " " " " "
W D-73C8 " " " " "
W D-73835 w/DB 955B378002 " " " 290P137020
OPTICAL ENGINE & MISC. PARTS
1-5-2
Part 1 - DLP
2-1-1
Part 2LCD Flat Panels
VLP39+ ChassisLT-40148LT-46148LT-52148
VLP39++ ChassisLT-46149LT-52149
VLP+++ ChassisLT-46246LT-52246
2-1-2
Part 2 - LCD
2-1-3
Part 2 - LCD
Part 2-Chapter 1Disassembly
Servicing the new LCD Panel models should be easierthen previous models. There are only three major com-ponents, PWB-POWER, PWB-MAIN and the LCDModule (Panel)..
Disassembly is similar in all seven of the LCD flat panelmodels. However there are some differences betweenmodels due to differences in features and physical size.Only the 46 inch models disassembly will be describedin this publication. Refer to the Service Manual for dis-assembly details on the other models.
The basic steps in the disassembly procedure include:1) Back cover removal.2) Stand removal.3) Stand Holder removal.4) STAY-VESA-T & SHIELD-T-CON removal.5) Chassis & STAY-VESA-B removal.6) Sub Assemblies removal.7) Bezel removal.8) HOLDER-PANEL-BOTTOM removal.9) Side/Top Holder Panels & Stay Panel removal.
Back Cover Removal1) Remove screws (A) and (B), shown in Figure 1-1.2) Carefully remove the back from the TV.
NOTE: There are two additional screws to remove on model LT-46148.
Figure 1-1: Back Cover Removal
2-1-4
Part 2 - LCD
Stand Removal1) Lay the unit face down on a soft, non-scratching surface.2) Remove screws (C), shown in Figure 1-2A & 1-2B. (Only two screws in the LT-46246)3) Slide the stand out the bottom of the unit.
Figure 1-2A: Stand Removal
Figure 1-2B: Stand Removal (LT-46246)
Holder Stand RemovalRemove screws (E) to remove the Holder-Stand(Figure 1-3)
Figure 1-3: Holder Stand Removal
2-1-5
Part 2 - LCDSTAY-VESA-T & Shield-T-CON Removal
(Refer to Figure 1-4A)1) Remove screws (D) to remove STAY-VESA-T2) Remove screws (F) to remove the SHIELD-T-CON.
Figure 1-4A: STAY-VESA-T & Shield-T-CON Removal
Figure 1-4B: Chassis & STAY-VESA-B
Chassis & STAY-VESA-B(Figure 1-4B)
1) To remove the chassis - remove screws (E).2) To remove STAY-VESA-B - remove screws (F).
2-1-6
Part 2 - LCD
Sub AssembliesRemoval
(Refer to Figure 1-5)1) Speaker assemblies -
remove screws (A).2) ASSY-SIDE-JACK -
remove screw (B).3) ASSY-SW-TOP -
remove screws (C).
Figure 1-5: Speaker, SIDE-JACK & SW-TOP RemovalBezel Removal
(Refer to Figure 1-6)1) Remove screws (E) from the bottom panel.2) Remove screw (G) from the Bezel top.3) Release top and side snaps and carefully remove the Bezel from the panel.
Figure 1-6: Bezel Removal
2-1-7
Part 2 - LCDHolder-Panel-Bottom Removal
(Refer to Figure 1-7)Remove screws (F) to remove the Holder-Panel-Bottom..
Side/Top-Holder-Panels and Stay-Panels Removal(Refer to Figure 1-8)
1) Remove Side & Top Panel’s screws (G) and (H).2) Remove Stay-Panel screws (J).3) Release top and side snaps and carefully remove the Bezel from the panel.
Figure 1-8: Side/Top-Holder-Panels & Stay-Panels Removal
Figure 1-7: Holder-Panel Bottom Removal
2-1-8
Part 2 - LCD
Chassis ComponentsThere are only two PWBs comprising the chassis, PWB-POWER and PWB-MAIN. Figure 1-9 shows the chassiswith PWB-MAIN shield installed. Figure 1-10 shows the chassis with the PWB-MAIN shield removed.
Figure 1-9: Chassis with PWB-MAIN Shield Installed
Figure 1-10: Chassis with PWB-MAIN Shield Removed
2-1-9
Part 2 - LCD
Main Shield
PWB-MAIN
PWB-POWER
Sound
Shield
PWB-SOUND
Chassis
Tray
Figure 1-11: VLP39++ Chassis Exploded ViewVLP39++ ChassisFigure 1-11 is an exploded view of the VLP39++ chas-sis. Note the added PWB-SOUND and Sound Shield.These are only on the VLP39++ chassis and are used to
generate the Projector Sound feature for that chassis.Projector Sound is described in more detail in Part 2Chapter 3.
2-1-10
Part 2 - LCD
2-2-1
Part 2 - LCD
Part 2-Chapter 2Circuitry Block Diagrams
The block diagrams for the 2008 LCD models are simi-lar to last years LCD models, but there are differences.The diagrams are included as a reference and to pointout those differences. They include:
• Figure 2-1: Power Supply• Figure 2-2: DC/DC Supplies• Figure 2-3: Video Signal Path• Figure 2-4: Sound Signal Path• Figure 2-5: Projected Sound Circuitry• Figure 2-6: Overall Control circuitry• Figure 2-7: Input/Output Auto Detect
Circuitry• Figure 2-8: Short Detect Circuitry• Figure 2-9: System 5/Wired Remote I/O
There were three major PCBs in last years models,PWB’s SIGNAL, DM and POWER. The circuitry thatwas on SIGNAL and DM PWBs is now combined on aPWB-MAIN. On nearly all 2008 LCD models thereare only two major PWBs, MAIN and POWER.
The only exceptions are VLP39++ models, that havethe Projector Sound feature. On these units there is an
added PWB-SOUND to generate drive for the 16 pro-jection speakers.
FRC (Field Rate Control) was only featured on one chas-sis type last year and the circuitry was external to a ma-jor PWB. This year it is featured on all LCD models andthe circuitry in on the PWB-MAIN. The VLP39++ andVLP39+++ chassis still features CableCARD circuitry.
Even though there only two major PWBs for most LCDmodels, make sure to order the correct PWB for thatspecific model. Due to feature differences between mod-els, there are three types of PWB-MAIN, and five typesof PWB-POWER. Check the Quick Parts Referencein Part 2 Chapter 4 for a specific model’s PWB partnumber.
One new feature is included in all LCD models Controlby a Wired Remote. If NetCommand is not being used,the user may, through the On-screen menus set the TVto be controlled through a cable connection to an exter-nal device.
2-2-2
Part 2 - LCDP
ow
er
Su
pp
ly
Figu
re 2
-1: P
ower
Sup
ply
2-2-3
Part 2 - LCD
DC/DC Supplies
Figure 2-2: DC/DC Supplies
2-2-4
Part 2- LCDV
ideo
Sig
nal
Path
Figu
re 2
-3: V
ideo
Sig
nal P
ath
2-2-5
Part 2 - LCD
So
un
d S
ign
al P
ath
Figure 2-4: Sound Signal Path
2-2-6
Part 2 - LCD
Projected Sound Circuit
Figure 2-5: Projected Sound Circuit
2-2-7
Part 2 - LCD
Overa
ll Co
ntro
l Circ
uitry
Figure 2-6: Overall C
ontrol Circuitry
2-2-8
Part 2 - LCD
In/Out AutoDetect Circuit
Short DetectCircuit
Figure 2-7: Input/Output Auto Detect Circut
Figure 2-8: Short Detect Circuitry
2-2-9
Part 2 - LCD
System 5 / WiredRemote I/O
Figure 2-9: System 5 / Wired Remote I/O Circuitry
2-2-10
Part 2 - LCD
2-3-1
Part 2 - LCD
Part 2 - Chapter 3LCD Panel Down to 1 Troubleshooting
InitializationAs in the DLP models many problems can be solved byResetting or Initializing the TV. The procedure for acti-vating a Reset or Initialization is the same as that in theDLP models. User resets are activated by the top panelUser Control buttons, shown in Figure 3-1, or by theRemote Control.
The most common user resets are:• AV Reset (resets all user Audio and Video
settings) - with the TV on, press the toppanel FORMAT and GUIDE buttons at thesame time.
• System Reset (user changes made at the lastTV On period will be lost) - press the toppanel SYSTEM RESET button. The PowerLED will flash for approximately for 1minute. Then the TV can be turned On.
Note: Unplugging the TV and then applying power also activates the System
Reset.
• User Reset (resets all user settings exceptthe V-chip) - use the remote control andpress “MENU-1-2-3”.
Figure 3-1: User Control Buttons (Top)
Figure 3-2: Option Menu
Service Level InitializationIs designed for Servicers, and resets all options and A/Vsettings to factory defaults. This initialization is activatedthrough the TV’s Option Menu, showing Figure 3-2.
Service Level Initialization Procedure:1) Use the Remote control an press “MENU-2-4-
7-0” activates the Option Menu shown inFigure 3-2.
2) Use the Up & Down buttons to highlightINITIAL.
3) Press ENTER (resets setting to factory defaults).
2-3-2
Part 2 - LCD
LED DiagnosticThe two front panel LEDs, POWER and STATUSare usefulness determining the cause of a malfunction.Whether the TV is On or Off, the STATUS LED is nor-mally Off. Table 3-1 shows the normal LED indicationsif no problem exists.
Table 3-2 describes the abnormal LED indications whena problem exist. If the STATUS LED is steady Red it
NORMAL LED INDICATIONS
POWER/TIMER LEDSTATUS
LEDCONDITION
Off Off Off (standby mode)
Blinks Green (Fast) Off Initia lizing (10~65 seconds) (AC off)
Green Off Power OnBlink Green (Slow) Off Power On Timer is set
Table 3-1: Normal LED Indications
Table3-2: Abnormal LED Indications
indicates a circuit problem. Possible causes are:• Short circuit• PWB problem• LCD Panel• Disconnected or loose cable.
Use the following Error Code feature to further help iso-late the problem.
NOTES __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
ABNORMAL LED INDICATIONSPOWER
LEDSTATUS LED CONDITION POSSIBLE CAUSE
• PON-Short
• Inverter Short
Off Red Circuit failure • LVDS cable disconnected
• Panel problem• PWB-MAIN problem
2-3-3
Part 2 - LCD
Error CodesTo use the Error Code operational check the TV mustbe in “Shut Down” and not have been switched off. Ifthe TV has been switched Off the code automaticallyresets to “12” No Error.
Error Code ActivationWhile the TV is in “Shut Down”:
• Press and hold for 5 seconds, the top panel“INPUT” and ‘MENU” buttons at the sametime.
• The “POWER LED” will start flashing.
• It flashes the value of the MSD (tens digit)of a two digit Error Code.
• There is a 1/2 second pause then the valueof the LSD (ones digit) is flashed.
• The value of the Error Code is repeated fivetimes.
Example:If the LED flashes 3 time, pauses, then flashes 5 time, theerror code is 35.
The Error Codes for the new LCD models are listed inTable 3-3.
ERROR CODESError Code Cause Most Likely Failure
12 Normal off No Problem detected
27 Inverter short detected PW B-POW ER - No 24 V at PC-Pins 1~5
28 FPGA download failure PW B-MAIN
29 FRC communication error PW B-MAIN
41 3.3VS or 5VS STANDBY-SHORT PW B-MAIN
44 LVDS Cable connection detection Loose LVDS Cable at PW B-MAIN (VR) or Panel Assembly
48 3.3V PON-SHORT PW B-MAIN
59 Panel 12V Short PW B-POW ER - No 12 V at PB-Pins 9 & 10
NOTES __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Table 3-3: LCD Error Codes
2-3-4
Part 2 - LCD
ERROR CODE LOGThis is a new feature to assist in servicing. It sometimesis helpful to know what error codes that have occurredin the past. The LCD models maintain a history of errorcodes in a memory log.
To access the Error Code Log:Press <MENU> <3-5-6-4>
Error Code Log
NOTES:______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
***** PAGE (002/002) *****CURRENT TIME: 01455 HOURS
LAMP T IME CODE STATUS
00413 HRS 57 OCCURRENCE
00413 HRS 57 RECOVERY Press Up to Previous Page
00716 HRS 32 OCCURRENCE
00716 HRS 32 RECOVERY Press Right to Top Page
00905 HRS 61 OCCURRENCE
00905 HRS 61 RECOVERY Press CANCEL to Initialize
Press MENU to Exit
Data TransferIn previous LCD models, if a major component was re-placed backup data had to be transferred to or from the
new component. Due to new circuitry design and pro-duction techniques data transfer is no longer necessary.
Error Log Code Definitions• Page - Current page number• Current Time - total hours of operational use.• Lamp Time - usage hours when the error occurred.• Code - the specific Error Code that occurred.• Two types of status:
OCCURRENCE - when the error occurred.RECOVERY - when normal operation resumed.
2-3-5
Part 2 - LCDSOUND PROJECTOR
(VLP39++ models only)
Although Sound Projector is a user setup and adjust-ment, it is included in the Troubleshooting segment sinceit is a new feature and servicers should be familiar withthe setup and adjustments.
Sound Projector uses a 16 directional speakers array toproduce the surround sound effect without using directconnections to external speakers. The sound from theset’s 16 speakers is directed to the listener and the wallsin the room. Sound reflected off the walls is directed tothe listener. The listener hears the reflected sound (offthe wall) from a different directions, producing a sur-round sound effect.
Figure 3-3 illustrates the sound paths in the room to gen-erate the surround sound effect. In this case the TV iscentered on one wall and the listener is directly in front ofthe TV. Sound from the TV is directed over 5 paths tothe listener.
1) From the TV directly to the listener.2) From the TV to the wall on the left and then
deflected to the listener.3) To a point further from the TV on the left wall, to
the rear wall and then to the listener.4) Step 2 and 3 are duplicated on the right wall.
The combined effect is the listener hears sound directlyfrom the TV, from the right and left sides of the TV, andfrom the right and left sides at the rear of the room or inother words surround sound.
Not all TVs will be positioned in the center of a wall,the listener may not be directly in front of the TV andthe angle of the right and left side paths depend on:
• The room size• Location of the TV• Distance between the TV and the listener.
Figure 3-3: Projection Sound paths
2-3-6
Part 2 - LCD
Sound Projector SetupFrom the location of the TV, viewer location and roomsize the sound paths are automatically set. This informa-tion must be entered by the user. The procedure forentering this information is shown in the Flow Chart ifFigure 3-4 and is described in the following:
1) Press MENU – Main Menu activated2) Highlight AV Menu & press “ENTER”3) Highlight Sound Projector & press “ENTER”4) Highlight TV Location – select Center, Left, L Cor-
ner, Right or R Corner.
Main
Menu
AV MenuCaptions
menu
Setup
Menu
Inputs
Menu
Lock
Menu
Video Audio ResetPerfect
ColorGlobal
Sound
Projector
TV
Location
TV Wall
Length
Other Wall
Length
TV to
Sofa
Center 16 feet 14 feet 12 feet
LeftL Corner
Right
R Corner
CUSTOM
SetDistance
Highlight
LocationSet
Distance
Set
Distance
Figure 3-4: Sound Projector Setup Precedure
5) Highlight TV Wall Length – enter wall length in feet.6) Highlight Other Wall Length – enter side wall length
in feet.7) Highlight TV to Sofa – enter distance from viewer
to TV in feet.
If the results are not satisfactory Highlight CUSTOMand press “ENTER”.
This activates the Sound Projector Custom SetupMenu, Figure 3-5
NOTES ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
2-3-7
Part 2 - LCD
Custom Setup Procedure
Adjusting Angles1) Highlight Center Angle – adjust until sound is
equal in both ears.2) Highlight Left Angle – adjust for maximum sound
from the front left side.3) Highlight Right Angle – adjust from maximum
sound from the front right side.4) Highlight Left Surround Angle – adjust so sound
appears to come from the rear left side.5) Highlight Right Surround Angle – adjust so the
sound appears to come from the rear right side.
NOTE: If the Left and Right Surround Angle cannot beachieved, make them the same setting as the frontRight an Left Angles
Adjusting Levels1) Adjust the Center Level to the mid point.
Sound Projector Custom Setup
Left Angle (-49):Right Angle (49):Center Angle (0):Left Surround Angle (-42):
Right Surround Angle (42)”
Left Level (0):
Right Level (0):
Center Level (0):
Left Surround Level (0):
Right Surround Level (0):
Left Angle (-49):
Sound Projector Custom Setup
Figure 3-5: Sound Projector Custom Setup Menu
2) Adjust each of the following level, one at a time, so each level sounds the same as the center sound level.
Left LevelRight LevelLeft Surround LevelRight Surround Level
3) Check all sound level by quickly switching between them using the UP and DOWN buttons.
Adjusting Subwoofer LevelIf using a subwoofer perform the following:
1) Play music containing low frequency bass sounds.2) Press AUDIO and use the UP and DOWN but-
tons to select the Subwoofer option.3) With the Subwoofer set to On, press ENTER to
display a slider for volume.
4) Use the RT & LF button to set the subwoofervolume.
.
2-3-8
Part 2 - LCDSOUND PROJECTOR TRANSDUCER TEST (Speaker test)
The servicer can place the unit into a service mode for checking the operation of the 16 speaker array.1) Press MENU 2 4 5 7 to access the Service Menu. (see Figure 3-6)
2) Next, press 0 to access the Sound Projector Transducer Test mode. (see Figure 3-7)
MENU 2 4 5 7
ISF
ASIC
3663 BRTcen 000
MENU 2 4 5 7 0
ISF
ASIC
3663 BRTcen 000
SOUND PROJECTOR TRANSDUCER TEST
Figure 3-6
Figure 3-7
2-3-9
Part 2 - LCD
3) Press ENTER to start the Sound Projector Transducer Test. It will start in AUTO mode, which cyclesa white noise test signal to each of the 16 speakers sequentially. (see Figure 3-8)
ENTER
AUTO 01
Press AUDIO to toggle between auto and manual test or 0 to end the test.
Figure 3-8
AUDIO
MANUAL 03
Press AUDIO to toggle between auto and manual test or 0 to end the test.
4) Press AUDIO to toggle into MANUAL mode. This allows the servicer to send the white noise testsignal to any of the 16 speakers, by using the and buttons. (see Figure 3-9)
Figure 3-9
2-3-10
Part 2 - LCDSOUND PROJECTOR DEMO MODE (Speaker test)
Another method which can be used to check this circuit is to activate the Demo Mode, which can be done byeither the customer or the servicer. The demonstration consists of a sequence of two different displays withassociated audio. The first is shown in Figure 3-10, the second in Figure 3-11. This sequence will play twice.
1) Press MENU then GUIDE to activate the Demostration.
You are now listening to
Same volume level for both 2-speaker and 16-speaker demos.
Audio Provided By
DIGITAL
average LCD sound.
Figure 3-10
You are now listening to
Same volume level for both 2-speaker and 16-speaker demos.
Audio Provided By
DIGITAL
Mistubishi Sound Projector with Dolby Digital.
Figure 3-11
2-3-11
Part 2 - LCD
2-4-1
Part 2 - LCD
Part 2 - Chapter 4Parts Quick Reference
MODEL PART NUMBER DESCRIPTION
LT-40148 289P120010 LCD-MODULE-40"
LT-46148 289P121010 LCD-MODULE-46"
LT-46149 " "
LT-46246 " "
LT-52148 289P122010 LCD-MODULE-52"
LT-52149 " "
LT-52246 " "
LCD PANEL ASSEMBLIES
MODEL PWB-MAIN PWB-POWER PWB-SOUND
LT-40148 934C290001 934C292001 None
LT-46148 934C290001 934C292002 "
LT-46149 934C290004 934C292005 934C291001
LT-46246 934C290005 934C292007 None
LT-52148 934C290001 934C292002 "
LT-52149 934C290004 934C292005 934C291001
LT-52246 934C290005 904C292007 None
PWBs
MODELS PART NUMBER
LT-40148 290P137010
LT-46148 "
LT-46149 "
LT-46246 260P137020
LT-52148 290P137010
LT-52149 "
LT-52246 260P137020
REMOTE CONTROL
2-4-2
Part 2 - LCD