Sony KV-28FX60A Service Manual page 5

AE-5 SELF DIAGNOSTIC SOFTWARE
The identification of errors within the AE-5 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event
of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with continuous flashing LED) and
then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be dis-
played through the LED (Series of flashes which must be counted) See table 1., non fatal errors are reported using this method.
Diagnostic Item
Description
Power does not turn on
+B Overcurrent (OCP)
Vertical Deflection stopped
No of times Standby
LED Flashes
Does not light Power cord is not plugged in
Fuse is burned out
2 times H.OUT (Q6803/6804) is shorted. (D Board)
Linearity FET (Q6806) is shorted. (D Board)
IC6604 Power IC is shorted. (D Board)
4 times +15V is not supplied R6835 open (D Board)
-15V is not supplied R6834 open (D Board)
IC6700 is shorted (D Board)
ERROR
No error
Not allowed (may be confused with Sircs response
flash!)
Over Current Protection
Over Voltage Protection
Vertical Protection
AKB
H - Protection
Speaker Protection
General IIC Line 0 error
MEGATEXT
NVM
Main colour decoder
Feature Box
D/A converter
Backend
Multi sound processor
Auto Wide
External RAM
Flash Timing Example : e.g. error number 3
StBy LED
ON
OFF
Probable cause
Location
LED
ERROR
COUNT
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
ON ON
OFF
5
Detected Symptoms
Power does not come on
No power is supplied to the TV
AC power supply is faulty
Power does not come on
Load on power line has shorted
Vertical deflection pulse has stopped
Power line has shorted