SONY SERVICE MODE LED BLINKING

SONY SERVICE MODE LED BLINKING CODES  Service Help By Imran Ashraf

KDL-22 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-24 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-26 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-32 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-40 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-46 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-55 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525;
 APPLICABLE TO: SONY  KDL-22 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-24 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-26 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-32 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-40 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-46 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525; KDL-55 EX320, EX321, EX325, EX421, EX425, EX520 EX521, EX523, EX524, EX525;

Sony SELF DIAGNOSIS FUNCTION

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 diagnostic items are displayed on the screen.  If the screen displays a '0', no error has occurred.
Standby LED flash time
Service menu item
Diagonostic item description

1. Not Count

2
MAIN_POWER
Main power over voltage protection.

3
DC_ALERT AUD_PROT
DC_ALERT
Audio abnormal detection.

4
BALANCER
Not used

5
TCON_ERR HFR_ERR
P_ID_ERR
Not used
Not used
Panel ID NVM error.

6
BACKLITE
Back light error [Panel inverter] or power Board error.

7
TEMP_ERR
FAN_ERR
Thermal error.
Fan error.

8
--------
Software error.

9 to 12 blinks
--------
Not used

 For errors with symptoms such as "Power sometimes shuts off" or "Screen sometimes goes out" that cannot be confirmed, it is not possible to bring up past occurrences or failure for confirmation on screen.
TO BRING-UP SCREEN TEST
Press {Display => Channel-5 => Volume (-) => TV Power}
TO ENTER INTO SERVICE MODE.......