Download - 2007 Sharp Aquos TV Service Update
Aquos 2007 Update D62/72/82/92
Course Objectives:
1. Upon completion of this course the student will have an understanding of the replaceable PWB’s and their functions
2. Using the service manual and training guide, the student will be able to perform Factory Initialization.
3. Using an SD card loaded with software, and a service manual, the student will be able to upgrade software.
4. Using a DTV/HD generator or a HDMI DVD player, the student will be able to troubleshoot signal symptoms with the Main unit.
5. Upon completion of this course, the student will be able to troubleshoot the Aquos TV’s without using a DVM or Oscilloscope.
6. Using hand tools the student will be able to disassemble the Aquos TV.
Aquos 2007 Update
Aquos 2007 Update
Aquos 2007 Update
Aquos 2007 Update
Main Unit Operation Analog, Cable and
Digital Tuning (ATSC/QAM)
Analog & Digital Audio Processing (SIF & SAP)
Optical Digital Audio Output
HDMI Input Switching & Processing
CPU, EPROM, & RS232 Operations
LVDS Output from scaler
IF Unit Operation
Component, Composite and Svideo Inputs
Audio Amplifier
A/V Switching
FRC Unit Operation
Receives LVDS from Main PWB
Performs Frame Rate Conversion from 60hz to 120hz
2 LVDS signal output drives the 4 Eagle driver IC’s on the LCD controller (D82 / D92 only)
LVDS in
2X LVDS out
Power Supply Unit Operation
The power supply PCB is responsible for generating all the main supplies needed to operate each PCB.
LED Unit Operation
The LED unit is responsible for:
Remote Control IR Receiving
OPC Sensor
Power and OPC Indicators
KEY Unit Operation
The KEY unit controls the following:
Power On/Off
Input selection
Volume & Channel selection
Signal Flow BlockSignal Flow Block
Main UnitLC
D C
on
trolle
r
LCD
PanelHDMI/DVI Input
IF U
NIT
Y,Pb,Pr/RGB/Svideo
LVDSOut to LCD Controller
2x LCD panel drive
LCD Panel Unit
Scaler
LVDS
Tuner
FRC
D82 / D92 models only
74.25MHz
148.50MHz
HDMIDVI
TMDS
Signal Flow BlockSignal Flow Block
Main UnitLC
D C
on
trolle
r
LCD
PanelHDMI/DVI Input
IF U
NIT
Y,Pb,Pr/RGB/Svideo
LVDSOut to LCD Controller
2x LCD panel drive
LCD Panel Unit
Scaler
LVDS
Tuner
Models D62 / 72
74.25MHzHDMIDVI
TMDS
Industry InitializationIndustry Initialization
These first 3 steps will bring you to the service menu
1) Press and continue to hold the VOL & INPUT buttons while plugging in AC power.
2) Continue to hold the VOL & INPUT buttons until <K> appears on the top left side of the Display.
Industry InitializationIndustry Initialization
3) Press the VOL &
Channel buttons until the blue 1/29 Service Menu screen appears.
4) Press key on remote control and navigate to page 2/29
Industry INIT (+cause) OFF
Industry InitializationIndustry Initialization
5) Press > on the remote control to change from off to on
6) Press “Enter Key” on the remote control to start industry init process
Note:////// will appear during industry init process
Industry INIT (+cause) ON
Industry INIT (+cause) ON /////////////
Industry InitializationIndustry Initialization
Industry initialization
complete
Lamp Error ResetLamp Error ResetUse Volume and Channel keys on remote control to navigate to the 2/29 page
1) Press the Channel on remote control to select Lamp Error Reset
2) Press > on the remote control to change from Off to On
3) Press “Enter Key” on remote control to reset lamp errors
Lamp Error reset ON
Industry INIT (+cause) OFF
Exiting Service MenuExiting Service Menu
All changes are stored automatically upon input
Disconnect AC power to exit the service menu
How to Upgrade SoftwareHow to Upgrade SoftwareNote: This upgrade procedure is similar to previous Aquos models using the SD card update process
Troubleshooting CodesTroubleshooting Codes
Lamp failure
Flash 1 time
Confirmed after 10 consecutive matched at 500ms intervals. Note that after five match counts, the lamp cannot be activated except in the monitor process.
Power failure
Flashes 2 times
Refer to “Power failure details”
Communication failure with main CPU
Flashes 3 times
Refer to “Communication failure details”. Communication line or main CPU failure.
Vsync
Trident failure
Flashes four times
Trident (pin 46) _IC operation failure.
Monitor temperature failure
Flashes 5 times
If the panel temperature is 140 degrees (F) for more for more than 15 seconds, CAUTION appears in OSD. Error standby is activated if 140 (F) for more than 25 seconds
Program data broken
Flashes 8 times
Internal Flash ROM data is incorrect
1) Power LED (The power LED (Green) which lights during TV reception flashes
Troubleshooting Codes
PS_ON
DET_10V failure
Flash once
DET_10V (pin 57). UR10V or A9V is not applied.
D_POW
DET_3V3 failure
Flashes twice
DET_3V3 (pin60) failure (L). D3.3V is not applied. If error is detected during operation, error standby is activated by polling.
D_POW
DET_6V failure
Flashes 3 times
DET_6V (pin 56) failure (L). D5V or A5V is not applied. If error is detected during operation, error standby is activated by polling
The error codes listed below will be indicated by a flashing Blue Power LED and Green OPC LED and indicate a Power supply failure or a voltage discrepancy on the Main PWB2) Power failure details (Power LED flashes two times and OPC flashes (X)
Troubleshooting Codes
PANEL_POW
PNL_ 12V failure
Flashes 5 times
DET_PNL_12V (pin 58) failure (L). If error is detected during operation, error standby is activated by polling.
Main failure
Flashes 7 times
Main microprocessor detection error (FAN error, 1bit AMP error, etc). The details are displayed in “Error STANDBY CAUSE” page.
2) Power failure details (Power LED flashes two times and OPC flashes (X)
The error codes listed below will be indicated by a flashing Blue Power LED and Green OPC LED and indicate a Power supply failure or a voltage discrepancy on the Main PWB(Power failure details continued from last page)
Troubleshooting Codes
Initial communication
Reception failure
Flash 1 times
Initial communication failure from the main CPU is not received. Communication line or main CPU start-up failure.
Time-out setting reception failure
Start up confirmation failure
Flashes twice
Time-out setting and start-up mode change cannot be received from the main CPU.
Regular communication failure
Flashes 3 times
Regular communication that performed at 1 second intervals in normal operation is interrupted. Main CPU or monitor microprocessor reception failure.
The error codes listed below will be indicated by a flashing Blue power LED and Green OPC LED and indicate a communication error related to the CPU.
3) Communication failure details (Power LED flashes 3 times and OPC flashes (X)
Trouble Shooting Codes
Lamp failure
Flash 1 time
Confirmed after 10 consecutive matched at 500ms intervals. Note that after five match counts, the lamp cannot be activated except in the monitor process.
1) Power LED (The power LED (Green) which lights during TV reception flashes)
Troubleshooting Codes
Number of lamp errors will be displayed on LAMP ERROR section of service menu (screen 1 / 29). When 5 lamp errors are detected the set will no longer turn on. Entering the service menu will over ride unit shut down.
The LC52D92 employs 22 lamps.
Troubleshooting Codes
The lamp error count can be reset to zero by enabling the LAMP ERROR RESET on screen 2/29 of the service menu.
Troubleshooting Codes
If the Power LED flashes 2 times and the OPC LED flashes 5 times, this indicates a communication error between main CPU and Monitor CPU.
Troubleshooting Codes
If a CPU and Monitor communication error occurs, the first step is to verify the integrity of the 3 cables the connect the Main PWB and the FRC PWB. If the cables are good the Main PWB is most likely at fault.
Normal Standby Cause
If the LC TV intermittently shuts down, there are a number of factors that may cause this symptom. Enter the service menu and check the NORMAL STANDBY CAUSE and ERROR STANDBY CAUSE (screen 1/29) for the following codes
Normal Standby CauseThe LC TV is designed to shut off in normal conditions that can be selected in the User Menu. This assists with Energy Star power consumption savings. If any of the following numbers or letters appear in the NORMAL STANDBY CAUSE the condition can be changed in the user menu.The “Command from RS232C” means the unit was turned off via RS232 Command. SLEEP timer command is located on the R/C.
Details of Normal Standby Cause6 No operation off7 No signal off8 PC power management mode 19 PC power management mode 2A Off TimerC Command from RS232C
Error Standby Cause
The LC TV may also turn off intermittently due to some type of ERROR caused by outside factors. If any of the following numbers appear in the ERROR STANDBY CAUSE, the unit turned off due to one of the reasons listed below
Details of Error Standby Cause5 Prolonged unspecified-signal input in PC mode13 Temperature error16 Monitor trouble detected17 Fan lock
Common No Audio Condition
If the LC TV exhibits a NO AUDIO Condition please check the “OPTION” area in the user menu to determine if the output select is set to [Fixed] or [Variable]
Common No Audio Condition
The Audio output settings must be set to [Fixed] for an audio signal to be present at the speakers. If the Audio output is set to [Variable] there will be no sound from the speakers.
Common No Color Condition
• If the picture has no color (Black and White) and looks grainy with a sync issue while viewing a composite input signal verify the Color System is set to Auto in the User Menu
Common No Color Condition
Verify the Color System is set to Auto. If the control is set to PAL-M or PAL-N the NTSC Composite video will be displayed in black and white.
Common No Color Condition
If a no color (black and white) condition is apparent on all or some input settings, verify the Monochrome control in the User Menu is turned OFF
Missing Segments on LCD Panel
If a segment or block is missing from the viewing area of the LCD panel, the first step is to check the integrity of the FPC ribbon cable connection between the LCD Controller PWB and the LCD panel.
Missing Segments on the LCD Panel
Verify the integrity of the FPC ribbon cables from LCD Controller PWB to LCD panel. There are 4 ribbon cables (2 for the top) and (2 for the bottom) to the LCD panel. If the connectors are good then the LCD controller PWB or LCD panel is at fault.
Lines and Black Segments
If line or black segment is visible on LCD panel viewing area, the first step is to check the integrity of the FPC cables that connect the FRC PWB to the LCD Controller. Various stripped pattern on LCD panel can be due to a loose or poorly connected LVDS cable
Lines and Black Segments
Verify the integrity of the 2 FPC ribbon cable that connect the FRC PWB to the LCD Controller PWB. If these connectors are good the FRC PWB, LCD Controller, or the LCD panel maybe at fault.
Other Symptoms
• Evenly spaced vertical or horizontal lines. Can be various colors (Red, Blue, Green, Yellow).
• No Picture or OSD. Audio is Normal• Spotting on picture. Spots can be various colors
(Red, Blue, Green, White).• Pattern on screen resembling a checkerboard.• Distorted / Noisy picture
• These symptoms are related to the Main PWB.
Common Customer Complaints
• The picture is fuzzy or out of focus. The picture looked better in the store.
• Verify what type video format the customer is viewing (NTSC, S-Video, Component or HD. The larger screen sizes will display more artifacts when a lower bandwidth signal displayed (ex. Analog cable, NTSC, or S-video)
• There are various adjustments in the user menu to help compensate for lower bandwidth signals.
Common Customer Complaints
• Picture looks fuzzy / out of focus• Adjust the Sharpness, Color Temp, and Fine Motion
Advanced and 3D-Y/C controls in the User Menu.
Common Customer Complaints
• Picture looks fuzzy / out of focus• Adjust Digital Noise Reduction control in User Menu
Common Customer Complaints
The LC TV also has 6 - AV modes that are available for achieving the best picture settings. These AV modes can be selected only by using the Remote Control
Common Customer Complaints
• Noise or small black bars on bottom or top of picture.• Bars on top, bottom, or left and right sides of picture.
If there is thin black lines or video noise on the bottom or top of the picture while viewing a HD content, select a view mode other than Dot by Dot.
If there are large gray or black bars on the bottom, top or left and right sides while viewing HD content, select a view mode that will adjust the picture to match the aspect ratio of the screen. The view mode control is on the remote control
Common Customer Complaints
• Screen has a spider web of defective pixels• The screen has over 100 dead pixels• Distorted liquid crystals• Defective pixels
• These complaints usually mean the LCD panel is broken or cracked (physical damage).
Unit Disassembly
Before proceeding with back cabinet disassembly remove SD card slot cover
Unit Disassembly
The back cabinet assembly can be removed with the stand affixed to the TV
Remove 16 screws
Note the 6 machine screws (White)
Unit Disassembly
Back cabinet assembly removed
Unit Disassembly
Remove 4 screws from each angle
Lift off angles
Bridge angle right and left
Unit Disassembly
You will need to remove the main shield in order to access the main and IF units
Remove 7 screws and 2 RS232 connector screws
Lift off main shield
PCB View
With the center angles and shields removed, you now have access to the various PCB’s
Note: Inverter and LCD controller PCB’s are part of the LCD panel unit, therefore, not replaceable individuallyMain unit
IF unit LED unit
Key unit LCD controller and FRC units
Power supply unit
Inverter unit
Main / IF Unit Removal
The main and IF units will be removed as one unit and then separated.
Remove 6 cables from main unit
Remove 5 screws from main unit
NOTE: LVDS cables are extremely fragile
LVDS
Main / IF Unit Removal
Remove 2 cables from IF unit
Remove 4 screws from IF unit
Main / IF Unit Removal
Remove 2 screws from tray chassis
Slide Main/IF units to the left and lift off
Main / IF Unit Removal
Remove 3 screws from jack angle and 2 DVI Input connector screws
Pull out main unit
Main / IF Unit Removal
Disconnect the 3 PWB connectors
Remove RCA cable from tuner
Main and IF units are now free and can be removed
Power Supply Unit
Removal
Disconnect 3 cables
Remove 7 screws
Lift off power supply unit
FRC Unit Removal
Remove 4 screws
and lift off Shield
Note: The LCD controller is located underneath the FRC unit.
FRC Unit Removal
Disconnect 6 cables
Remove FRC unit
Note: LVDS and FPC ribbon cables are fragile
LVDS
LVDS
Key Unit Removal
The key unit is
loose once the rear cabinet ass’y is removed
Disconnect 1 cable
Remove 1 screws and lift off LED unit
LED Unit Removal
Remove 2 screws
from right speaker PWB
Pull out right speaker PWB
Remove 3 screws from angle bracket
Note the 2 machine screws (white)
LED Unit Removal
Slide Angle bracket to the left to remove
Release plastic clip to remove LED unit
Disconnect 1 cable
Remember - Sharpnet
Sharpnet Opening Screen
Search Results
Board Exchange Order Screen
0000XXXXXX
This concludes the AQUOS 2007 UPDATE