KV-TG213M50 - Sony TV Service Manual (repair manual). Page 4

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The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY (

1

) indicator will automatically

begin to flash. 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.

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 occurred if the screen displays a "0".

Diagnosis

Item

Description

No Power

+B overcurrent
(OCP)

V-Protect (OVP)

IK (AKB)

Power supply
NG (+5V) for
Video Processor

No. of timer

STANDBY (

1

)

indicator flashes

Does not light

2 times

4 times

5 times

8 times

Diagnostic Result
on screen display

–

2:0

or

2:1 ~ 255

4:0

or

4:1 ~ 255

5:0

or

5:1 ~ 255

8:0

or

8:1 ~ 255

Probable Cause

Location

• Power cord is not plugged

in.

• Fuse is burned out (F600)

A board.

• H OUT (Q805) is shorted.

(A board)

• IC751 is shorted. (C board)

• +13V is not supplied.

(A board)

• IC804 is faulty. (A board)

• Video OUT (IC751) is

faulty. (C board)

• IC001 is faulty. (A board)
• Screen (G2) is improperly

adjusted.

• IC604 faulty.
• IC602 faulty.

Detected

Symptoms

• Power does not turn on.
• No power is supplied on

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 shorted.

• No raster is generated.
• CRT Cathode current

detection reference pulse
output is small.

• No power supply to CRT

ANODE.

• No RASTER is generated.

The example above represents for 4 times blink

Lamp OFF 3 seconds 

Lamp ON 300ms

Lamp OFF 300ms

Standby indicator