Self Diagnostic Function - Sony Trinitron RM-W101 Service Manual

The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY (1) indicator will automatically
begin to flash. A description of the self-diagnosis function is explained in the instruction manual. The number of times the
STANDBY (1) 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 errors occurs, the STANDBY (1) indicator will flash a set 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 diagnosis items are displayed on screen. No error has occured if the screen displays a "0".
Diagnosis No. of timer
Item STANDBY (1)
Description indicator flashes
Power does Does not light
not turn on
+B overcurrent 2 times
(OCP)*
V-Protect 4 times
IK (AKB) 5 times
Power supply 8 times
NG (+5V) for
Video Processor
* If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is
diagnosed first by the mirco controller is displayed on the screen.
** Refer to Screen (G2) Adjustment in this manual.

SELF DIAGNOSTIC FUNCTION

Self-Diagnostic
display/
Diagnosis result
– • Power cord is not plugged
in.
• Fuse is burned out (F600)
A board.
2:0 • H OUT (Q805) is shorted.
or (A board)
2:1 ~ 255 • IC751 is shorted. (C board)
4:0 • +13V is not supplied.
or (A board)
4:1 ~ 255 • IC804 is faulty. (A board)
5:0 • Video OUT (IC1545) is
or faulty. (A board)
5:1 ~ 255 • IC001 is faulty. (A board)
• Screen (G2) is improperly
adjusted.**
8:0 • IC604 faulty.
or • IC602 faulty.
8:1 ~ 255
– 3 –
Probable Cause
Location
• Power does not turn on.
• No power is supplied on
TV.
• AC Power supply is faulty.
• Power does not come 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 shorted.
• No raster is generated.
• CRT Cathode current
detection reference pulse
output is small.
• No power supply to CRT
ANODE.
• No RASTER is generated.
KV-BM142M70
RM-W101
Detected
Symptoms