KLV-32W400A, KLV-40W400A, KLV-46W400A, KLV-52W400A - Sony TV Service Manual (repair manual). Page 6

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KLV-32/40/46/52W400A (GA)     6
SELF DIAGNOSIS FUNCTION
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.
1-1. 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 .
Number of times STANDY LED
Monitoring Items
Diagnostic Item Description
(Red) flashes
(Screen Display)
2 times
DC_DET
Main power supply voltage error (12V, etc)
3 times
DC_ALERT1
Malfunction of 3.3V line (Trident circuit, etc)
4 times
DC_ALERT2
Malfunction of 5V line
(Voltage Supply to FE, etc)
5 times
DC_ALERT3
Malfunction of power supply for screen
6 times
BACKLIGHT
Malfunction of inverter or overcurrent, etc
7 times
TEMPERATURE
Abnormal temperature inside unit
8 times
AUDIO
Audio circuit error (amplifier, etc.)
10 times
DEF
Digital FE circuit error
11 times
B-ENGINE
Malfunction of Trident IC or around IC
12 times
HFR
BH board error
13 times
(No item on screen display)
Malfunction of balancer
1-2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
1-3. STOPPING THE STANDBY FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY LED from flashing.
2 times
4 times
5 times
LED ON  0.3 sec.
LED OFF 0.3 sec.
LED OFF
2 sec. 
[ FLASH COUNT ]
Note: One flash counts is not self-diagnostic.
STANDBY LED
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