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

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.


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


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 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)


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)


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)


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.


The lamp error count can be reset to zero by enabling the LAMP ERROR RESET on screen 2/29 of the service menu.


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.


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


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.


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.


• Picture looks fuzzy / out of focus• Adjust the Sharpness, Color Temp, and Fine Motion

Advanced and 3D-Y/C controls in the User Menu.


• Picture looks fuzzy / out of focus• Adjust Digital Noise Reduction control in User Menu


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


• 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


• 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


Remove 2 cables from IF unit

Remove 4 screws from IF unit


Remove 2 screws from tray chassis

Slide Main/IF units to the left and lift off


Remove 3 screws from jack angle and 2 DVI Input connector screws

Pull out main unit


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

2007 Sharp Aquos TV Service Update

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