How to enter service mode sony led tv - SONY KDL-46X3100 - SERVICE MODE - TROUBLESHOOTING - POWER SUPPLY CIRCUIT - LED television repair and service

Category: LED Television Repair and Service

Contents of this article

How to access to Service mode
Self diagnostics
Troubleshooting

SONY KDL-46X3100

SELF DIAGNOSTIC SOFTWARE

The identification of errors within the EG1H chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted).

LED BLINKING CODES

Number of LED Flashes	Display	Error Description
02	POW ERR1	Power error (Watching 12v rail).
05	T_CON	T-CON error.
06	BACKLITE	[CCFL] Panel inverter error. [LED] GL board error.
07	PANEL TEMP	Panel temperature abnormal detection.
08	AUD_PROT	Audio abnormal detection.
09	FAN_ERR	Fan error
10	DTT ERR	EMMA WDT - Not detected (Reboot operation).
13	BALANCER	[CCFL] Panel balancer error. [LED-BL] SPI error(Babylon communication error).

SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for confirmation on the screen:

To Bring Up Screen Test
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

ON SCREEN DISPLAY > DIGIT 5 > VOLUME DOWN > POWER ON

Clearing the result display
To clear the result display to “0”, press button on the remote commander sequentially as shown below when the diagnostic screen is being displayed.

Quitting Self-diagnostic screen
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.

DISASSEMBLING THE BACK COVER

Remove the rear cover fixing screws indicated and pull the rear cover gently backwards away from the back of the TV set.

How to enter Service Mode

Service adjustments to this model can be performed using the supplied remote Commander RM-ED012

1. Turn on the power to the TV set and enter into the stand-by mode.
2. Press the following sequence of buttons on the Remote Commander

ON SCREEN DISPLAY > DIGIT 5 > VOLUME UP > POWER ON

3. The TVM Service Menu appears on the screen

Note :# After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON.

Changing TVM Data Settings

1. Press “2 / 5” on the remote commander to select (up / down) category.
2. Press “1 / 4” on the remote commander to select (up / down) item.
3. Press “3 / 6” on the remote commander to select (up / down) data .

Writing TVM Data

1. Press “Mute” on the remote commander. The word “SERVICE” changes to “WRITE” .
2. Press “0” on the remote commander.
3. After approximately 1 minute, “WRITE” changes to “SERVICE”. This indicates writing is complete.

Entering BEM Service Menu

1. Press “Previous channel ” BUTTON on the remote commander and the BEM menu appears

Changing BEM Data Settings

1. Press “2 / 5” on the remote commander to select (up / down) category .
2. Press “1 / 4” on the remote commander to select (up / down) item .3. Press “3 / 6” on the remote commander to select (up / down)

Writing BEM Data

1. Press “Mute” on the remote commander. The word “SERVICE” in green changes to “WRITE” (See Pic.6).
2. Press “0” on the remote commander. The word “WRITE” in green changes to red. This indicates writing is in progress.
3. When “WRITE” changes to green “SERVICE”. This indicates writing is complete

Trouble Shooting

Set Reboots

When the TV Set tries to restart please check the following:-
1. FBA board.
- CN2800 12v power and harness to G6.
- F4100, F4101, F4102, F5400, F7800, F7801 for conduction .
2. If no problems are found with the power rail replace the FBA board

Power Error

When the TV Set indicates a power error please check the following:-
1. Check the TV micro pin 79 and 138 on the AE board.
2. Check 12V at CN1000 and F1001 on the AE board.
3. Check the G6 board

T-Con Error

When the TV Set has a T-Con error please check the following:-
1. Check the BE micro pin 128 on the FBA board.
2. Replace the panel module

Back Light Error

When the TV Set temperature is high please check the following:-
1. Check IC1000 on the AE board and replace the AE board if the temperature monitoring circuit has a problem.
2. Check the panel.

Audio Error

When the TV Set has an audio error please check the following:-
1. Check IC1800 on AE board. The audio amp detects over current, thermal shutdown and/or low voltage.
2. Check voltage at CN1002 pin 20 on the AE board.
3. Replace the AE board

Fan Error

When the TV Set has a fan error please check the following:-
1. Check the BE micro pin 154 on the FBA board.
2. Check fan harness connection.
3. Check the voltage on CN1301 the AE board.
4. Replace the fan

Balancer Error

When the TV Set has a Balancer board error please check the following:-
1. Check the BE micro pin 163 on the FBA board.
2. Check harness connection CN6700 on the D4 board and CN104 on tne balancer board of panel module (40 inches).
3. Check harness connection CN9700, CN9701 on the CB1 board and panel module (46/55 inches).
4. Replace the panel module.
5. Replace CB1 board (46/55 inches).

CB1 Board Replacement (46/55 inches)

When replacing the CB1 board adjustment data held in the backlight NVM of the panel can be copied to the CB1 board. Data held on the CB1 board can also be copied to the panel in the case of panel replacement

1. Enter Service Mode .
2. Go in to BEM Service Mode and go to ‘DATA_COPY’ .

3. Change ‘COPY_SW1’ to 1 and wait until the message “ COPIED NVM TO FLASH” appears.
At this point make sure the TV set is not powered off until this message appears

4. Software has now been copied. Switch AC off and back on again to confirm

POWER SUPPLY CIRCUIT