Sony KV-36FS320, KV-32FS320, KV-27FS320, KV-34FS120 Self-Diagnostic Function, Self Diagnosis

KV-27FS320/32FS120/32FS320/34FS120/36FS120/36FS320/38FS120

SELF-DIAGNOSTIC FUNCTION

Self Diagnosis

Supported model

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

Diagnostic Test Indicators

When an error occurs, the STANDBY/TIMER LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas.

Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.

Diagnostic Item	No. of times	Self-Diagnositc		Probable Cause Location	Detected Symptoms
Description	STANDBY/ TIMER		Display/
	lamp flashes	Diagnostic Result
Power does not turn on	Does not light			• Power cord is not plugged in.	• Power does not come on.
				• Fuse is burned out (F601). (A Board)	• No power is supplied to the TV.
					• AC Power supply is faulty.
+B overcurrent (OCP)*	2 times		2:0 or 2:1	• H.OUT (Q502) is shorted. (A Board)	• Power does not come on.
				• IC702 is shorted. (C Board)	• Load on power line is shorted.
I-Prot	4 times		4:0 or 4:1	• +13V is not supplied. (A Board)	• Has entered standby state after horizontal raster.
				• IC561 is faulty. (A Board)	• Vertical deflection pulse is stopped.
					• Power line is shorted or power supply is stopped.
IK (AKB)	5 times		5:0 or 5:1	• IC001 is faulty. (M Board)	• No raster is generated.
				• Screen (G2) is improperly adjusted.**	• CRT Cathode current detection reference pulse
					output is small.

*If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is diagnosed first by the mircrocontroller is displayed on the screen.

**Refer to Screen (G2) Adjustments in Section 2-4. of this manual.

Display of Standby/Timer LED Flash Count

2 times 4 times

5 times

LED ON 0.3 sec.
	LED OFF
LED OFF 0.3 sec.
	3 sec.
Diagnostic Item	Flash Count*

Standby/Timer LED

+B Overcurrent	2 times
I-Prot	4 times
IK (AKB)	5 times

*One flash count is not used for self-diagnostic.

Stopping the Standby/Timer LED Flash

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from flashing.

KV-27FS320/32FS120/32FS320/34FS120/36FS120/36FS320/38FS120 8