KDL-32EX421, KDL-32EX425, KDL-32EX520, KDL-32EX521, KDL-32EX523, KDL-32EX524, KDL-32EX525, KDL-37EX521, KDL-37EX524, KDL-37EX525, KDL-40EX520, KDL-40EX521, KDL-40EX523, KDL-40EX524, KDL-40EX525, KDL-46EX520, KDL-46EX521, KDL-46EX524, KDL - Sony TV Service Manual (repair manual). Page 10

Read Sony KDL-32EX421 / KDL-32EX425 / KDL-32EX520 / KDL-32EX521 / KDL-32EX523 / KDL-32EX524 / KDL-32EX525 / KDL-37EX521 / KDL-37EX524 / KDL-37EX525 / KDL-40EX520 / KDL-40EX521 / KDL-40EX523 / KDL-40EX524 / KDL-40EX525 / KDL-46EX520 / KDL-46EX521 / KDL-46EX524 / KDL Service Manual online

KDL-32EX421,425/37EX521,524,525/32/40/46EX520,521,523,524,525(AEP/UK)
10
SELF DIAGNOSIS FUNCTION
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 .
The units in this manual contain a self-diagnostic 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.
0.5
0.5
3
DISPLAY OF STANDBY LED FLASH COUNT
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:
5
*
 : Note that this differs from entering the service mode (volume +)
*
DISPLAY
TV POWER
Channel
Volume
STBY LED
Flash time
Service menu Item
name
(Screen Display)
Diagnostic Item Description
2
MAIN_POWE
Main Power Over Voltage Protection
DC_ALERT
DC_ALERT
AUD_PROT
Audio Abnorm al Detection
4
BALANCER
Not us ed
TCON_ERR
Not us ed
HFR_ERR
Not us ed
P_ID_ERR
Panel ID NVM Error
6
BACKLITE
Back Light Error (Panel Inverter) or Power Board Error
TEMP_ERR
Therm al Error
FAN_ERR
Fan Error
8
-
Software Error
9
-
Not us ed
10
EMITTER
Not us ed
11
-
Not us ed
12
-
Not us ed
3
5
7
Page of 67
Display

Click on the first or last page to see other KDL-32EX421 / KDL-32EX425 / KDL-32EX520 / KDL-32EX521 / KDL-32EX523 / KDL-32EX524 / KDL-32EX525 / KDL-37EX521 / KDL-37EX524 / KDL-37EX525 / KDL-40EX520 / KDL-40EX521 / KDL-40EX523 / KDL-40EX524 / KDL-40EX525 / KDL-46EX520 / KDL-46EX521 / KDL-46EX524 / KDL service manuals if exist.