SONY KDL-50FA97C LED TV - SERVICE MODE - LED BLINKING ERROR CODES - WHITE BALANCE ADJUSTMENT - SELF DIAGNOSTICS - LED TELEVISION REPAIR AND SERVICE - MANUAL SERVICE

SONY KDL-50FA97C LED TV - Service mode - LED blinking error codes - white balance adjustment - self diagnostics - LED television repair and service - manual service

Category: LED Television Repair and Service 

Contents of this article 

• How to access to service modes 
• LED Blinking and causes 
• White balance adjustment 
• Model number setting 

SONY KDL-50FA97C 

SELF DIAGNOSIS

OUTLINE OF SELF DIAGNOSIS FUNCTION
If an error occurs, the STANDBY LED will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY LED flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred .

LED BLINKING AND CAUSES 

Smart Core RED LED blinking count	Detection Items	Board Error Item
2x	Main 19.5V overvoltage [MAIN_POWE] This failure is not saved	Power Adapter BMX Board Error
3x	Main 5.0V failure [DC_ALERT]	BMX Board Error
	Audio amp. protection [AUD_ERR]	BMX Board Error Speaker
	Tuner or demodulator I2C NACK [TU_DEMOD]	BMX Board Error
5x	Panel ID EEPROM I2C No ACK (Also panel power failure is a suspect) [P_ID_ERR] - detect at startup sequence only	Panel module Tcon board BMX Board Error
6x	-FRC device I2C No ACK [FRCTC_I2C] -FRC device Initialization failure [FRCTC_I2C] -detect at startup sequence only	Tcon board
	LED driver [BACKLIGHT]	LED driver (LD) board
7x	Over temperature protection [TEMP_ERR] Temp. sensor I2C NACK [TEMP_ERR]	BMX Board 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:

DISPLAY >CANNEL 5 > VOLUME - > POWER ON

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
Panel operation time : Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.

ACCESSING SERVICE MODE
1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode.

DISPLAY >CHANNEL 5 > VOLUME + > POWER ON

ACCESSING SOFTWARE VERSION
1) In Service Mode, select “Model Information “ Press (Enter) or > button on Remote to enter status information.

2) Press (Enter) or “Return” button on Remote to back to Service Mode.

ACCESSING SERIAL NUMBER EDIT
1) In Service Mode, select “Model” pressing > button. Select “Serial Number Edit” pressing > button.

2) Press  UP or DOWN  button to select number.
* The font color of “Yes” is change to black when it is selected.

3) Serial Number can be set ONLY ONCE.

# After user input data , press <Enter>.

# Pop dialog will appear to inform user to confirm data.

# Press > or < button to select “Yes” or “No” .

# Select “Yes” if input data is correct.

# Select “No” if input data is incorrect.

# Press <Enter> to save answer.

4) If “Yes” is selected, the input data is saved into EEPROM.

 # “Serial Number Edit” is grayed out and the serial number that has been input is displayed.

# User will not able to edit anymore.

Note: * The font color of “Serial Number Edit” is change to orange after “Yes” is selected.

5) If “No” is selected, the input data is not saved into EEPROM.

The serial number that has been input is displayed.
User can still edit the Serial Number.

Note: * The font color of “No” is change to black when it is selected.

Note: * The font color of “Serial Number Edit” is white after “No” is selected.

ACCESSING MODEL NUMBER SETTING
1) In Service Mode, select “Model” pressing > button. Select “Model Number Setting” pressing > button.

2) Press UP or DOWN  button on Remote to input numbers.
3) Press UP or DOWN  arrow key to Product Name Candidate. (e.g. KDL-40X500B CO1, KDL-40X500C BR6)
4) Select one Product Name from the LIST, press (Enter) will pop dialog to inform user to confirm data.
5) Press “OK” button to select YES or No.

Select OK if input data is correct.
Select NO if input data is incorrect.
Press <Enter> to save answer.
Model dependent settings will be overwritten into EEPROM.

W/B ADJUSTMENT VIA SERVICE MODE
Apply when B* board or Panel is replaced.
1) In Service Mode, select “Panel/PQ” pressing > button.

2) Go to “WB Adjustment”, category by UP or DOWN button. To select “WB Adjustment”, press > button.

3) To change data, press > or < button.

WB/MURA/CUC DATA TRANSFER VIA SERVICE MODE
Apply when B* board or Panel is replaced.
1) In Service Mode, select “Panel/PQ” pressing > button

2) Go to “WB/Mura/CUC data transfer”, category by UP or DOWN  button.  To select “WB/Mura/CUC data transfer”, press > button.
3) To change data, press < or > button.

4) In “WB/Mura/CUC data transfer:
a) Select “WB/Gamma data transfer” by pressing UP or DOWN on remote
commander until cursor is on “WB/Gamma data transfer”.
Selectable items are:
> 0. SoC to T-con
> T-con to SoC
> Initialize data
b) To change the items, press < or > on remote commander.
c) Select “[Start]” and press “Enter” button to start transfer.