KP-53V100 - Sony TV Service Manual (repair manual). Page 6

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KP-53V100
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER 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/TIMER 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/TIMER 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.
Results for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, an error has occurred.
  Diagnostic Item 
STANDBY/ 
Possible Problem Location 
 
Condition 
Detected Symptoms
     
   
TIMER
 
   
flashes
Power not On 
[Standby Power Supply System] 
Cannot turn on the power
 
 
F601 open 
LED doesn’t blink
 
 
R607 open
 
 
Q601 short circuit
 
 
[Main Power Supply System}
 
 
IC601 and R612 are broken
 
 
VDR601 short-circuit
+B OCP Detection 
2 times 
Short circuit of power supply in each circuit 
Goes to the standby mode 
2:  +B OCP 000
 
 
 
Short circuit of the +B line
+B OVP Detection 
3 times 
T603 pin 7 to pin 8 is open 
Goes to the standby mode 
3:  +B OVP 000
Vertical Deflection Stop 
4 times 
IC 1509 (V OUT) is broken 
Raster goes to one line horizontally 
4: V Stop 000
 
 
Q1505 (V Pulse Buffer) is broken 
A and then video signal is muted.
Video Out Abnormality 
5 times 
Video Out, Q705, 732, 761, and others in C board 
STANDBY/TIMER LED blinks approx. 
5: AKB  000
Detection 
 
 
30 secs, then blinks for the diagnosis
Horizontal Deflection Stop 
6 times 
C515, 516 open.  IC206 (YC Jungle) is broken. 
Raster does not appear. 
6: H Stop  000
Audio Abnormality 
8 times 
IC 406 (Audio amp.) is broken. 
The sound is not out. 
8: Audio  000
Detection 
 
PS401, 402 open 
Goes to the standby mode
Note:  000 the range of values for number of operations is 000 - 255.  For 256 or higher, the number remains as 255.
Display of Standby/Timer LED Flash Count
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Release of STANDBY/TIMER indicator blinking.
The STANDBY/TIMER indicator blinking display is released by turning OFF the power switch on the TV main unit or removing the plug from the power.
Self Diagnosis
Supported model
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