Sony KP-43T75A, KP-53SV75A Self Diagnosis Function, Summary of Self-Diagnosis Function

KP-43T75A/53SV75A

RM-Y906 RM-Y906

SELF DIAGNOSIS FUNCTION

1.Summary of Self-Diagnosis Function

•This device includes a self-diagnosis function.

•In case of abnormalities, the TIMER/STANDBY indicator automatically blinks. It is possible to predict the abnormality location by the number of blinks. The Instruction Manual describes blinking of the TIMER/STANDBY indicator.

•If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated or not. Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.

2.Diagnosis Items and Prediction of Malfunction Location

•When a malfunction occurs the TIMER/STANDBY indicator only blinks for one of the following diagnosis items. In case of two or more malfunctions, the item which first occurred blinks. If the malfunctions occurred simultaneously, the item with the lower blink count blinks first.

•The screen display displays the results regarding all the diagnosis items listed below. The display “ 0 ” means that no malfunc- tions occurred.

	TIMER/STANDBY			Self-diagnosis
Diagnosis item	Indicater	Supposed malfunction	Condition	screen display,
	Number of blinks			Diagnosis item: Results
		[Standby Power Supply System]
		F601 open.
		R607 open.	Cannot turn on the power.
• Power not ON	0	Q601 short circuit
			LED doesn't blink.
		[Main Power Supply System]
		IC601 and R612 are broken.
		VDR601 short-circuit
+B OCP detection	2 times	Short circuit of power supply system in each circuit.	Goes to the standby mode	2 : +B OCP	000
			Short circuit of +B line
+B OVP detection	3 times	T603 pin 78 open.	Goes to the standby mode	3 : +B OVP	000
		R672 open.	Malfunction of power supply circuit
Vertical deflection stop	4 times	IC1509(V out) is broken.	Raster goes to one line horizontally, Aand then video	4 : V Stop	000
		Q1505(V Pulse Buffer) is broken.	signal is muted.
		Video out, Q705, 732, 761 and others in C board	TIMER/STANDBY LED blinks approx. 30 seconds,
Video out abnormality detection	5 times	circuit.		5 : AKB	000
			and then blinks for the self diagnosis.
		Q218, 219, 220 (A board)
Horizontal deflection stop	6 times	C515, 516 open.	Raster doesn't appear.	6 : H Stop	000
		IC206(YC Jungle) is broken.
Audio abnormality detection	8 times	IC406(Audio amp.) is broken.	The sound is not out.	8 : Audio	000
		PS401, 402 open.	Goes to the standby mode

*: 000 the range of values for number of operations is 000-255. For 256 or higher there is no count up and the number remains at 255.

3. Blinking count display of TIMER/STAVDBY indicator

< FRONT PANEL >

FLASH FOCUS TV/VIDEO – VOLUME + – CHANNEL + POWER TIMER/STAND BY

TIMER/STANDBY indicator

*One blink is not used for self-diagnosis.

•EXAMPLE

<Diagnosis Items> <Number of Blinks>

• +B overcurrent	2 times
• +B overvoltage	3 times
• Vertical deflection stop	4 times

Lamp ON : 0.3 seconds

Lamp OFF : 0.3 seconds

Lamp OFF : 3.0 seconds

Release of TIMER/STANDBY indicator blinking.

•The TIMER/STANDBY indicator blinking display is released by turning OFF the power switch on the TV main unit or removing the plug from the power.

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