Self Diagnostic Function - Sony TRINITRON KV-SP29M53K Service Manual

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY Indicator will automatically
begin to flash.
The number of times the STANDBY Indicator flashes translates to a probable source of the problem.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 Indicator will flash a number of times to indicate the possible cause of the
problem. If there is more than one error, the Indicator 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".
Diagnosis No. of times
Item STANDBY
Description Indicator flashes
• No Power Does not light
• +B overcurrent 2 times
(OCP)
• Vertical NG. 4 times
• IK (AKB) 5 times
• Supply Voltage 8 times
Protection
2. STANDBY INDICATOR BLINKING PROCESS
Lamp ON 300ms
Lamp OFF 300ms
Lamp OFF 3 seconds
The example above represents for 4 times blink

SELF DIAGNOSTIC FUNCTION

Diagnostic Result
on screen display
• Power cord is not plugged
—
in.
• Fuse is burned out (F4601)
(H1 Board)
• H.OUT (Q511) is shorted.
2 OCP:0
(A board)
2 OCP:1 ~ 255
• IC751 is shorted.
(CV Board)
• +13V is not supplied.
4 VSTOP:0
(A Board)
4 VSTOP:1 ~ 255
• IC503 voltage list is faulty.
(A Board)
• Video OUT (IC751) is faulty.
5 AKB:0
(CV Board)
5 AKB:1 ~ 255
• IC001 is faulty. (A Board)
• Screen (G2) is improperly
adjusted.
• IC604 faulty.
8 SUP:0
• IC607 faulty.
8 SUP:1 ~ 255
3. STANDBY INDICATOR ON TV FRONT PANEL
– 3 –
Probable
Cause
Location
• Power does not turn on.
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not turn on.
• Load on power line is
shorted.
• Has entered standby state
after horizontal raster.
• Vertical deflection pulse is
stopped.
• Power line is shorted or
power supply is stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
• No power supply to CRT
ANODE.
• No RASTER is generated.
Standby indicator
KV-SP29M53K/M83K/N63K
RM-GA002
Detected
Symptoms