Self Diagnostic Function; Diagnostic Test Indicators - Sony KV-EX29M93 Service Manual

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically
begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER
lamp 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.

DIAGNOSTIC TEST INDICATORS

When an error occurs, the STANDBY/TIMER lamp will flash a number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a "0".
Diagnostic No. of times
Item STANDBY/TIMER
Description lamp flashes
• Power does not Does not light
turn on
• +B overcurrent 2 times
(OCP)
• +B overvoltage 3 times
(OVP)
• Vertical deflection 4 times
failure
• White balance 5 times
failure (no
PICTURE)
• Horizontal
6 times
deflection failure
• Micro reset
Note 1: Refer to screen (G2) Adjustment in section 6-5 of this manual.

SELF DIAGNOSTIC FUNCTION

Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
003:000 or
003:001~255
004:000 or
004:001~255
005:000 or
005:001~255
006:000 or
006:001~225
— 101:00 or
101:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F1601
(F1 Board)
• H.OUT Q6807 is shorted.
• H.IN Q6810 is shorted.
(D board)
• PH 6602 faulty.
• 10.5V is not supplied.
(D board)
• V.OUT IC6800 faulty
D6816 faulty
D6817 faulty
D6824 faulty
R6852 open
R6851 open (D board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• Video OUT IC9001, 9002,
9003 are faulty. (C board)
• IC8306 (A board) and
IC4301 (A board) are faulty.
• C6831 is open circuit.
(D board)
• CRT Discharge (C Board)
• Static discharge
• External noise
– 5 –
KV-EX29M39/EX29M87/EX34M97
KV-EX29M93/EX29M65
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 is
shorted.
• Power does not come on.
• Vertical deflection pulse is
stopped.
• Vertical size is too small.
• Vertical deflection stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
• H pulse output is too high.
• Power is shut down shortly,
after this return back to
normal.
• Detect Micro latch up.
RM-963
RM-964