Mitsubishi Electronics WD-52528, WD-62527, WD-62528 specifications LCD Engine Internal Layout

MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528

OPTICAL ENGINE TROUBLESHOOTING

Symptom	Cause	What to check
	FMT does not turn on lamp due to fault	Check error code on front pannel. Check problem
	detection	indicated.
	No DC supply to ballast	Check power PW B PL connector for approx. 340VDC.
No Light		Check connections PL-JE, JE-CN2
	No Lamp enable signal	Check FMT output Lamplitz FB pin 1. Check
		connections FB-FB, CJ3-CJ3
	Lamp end of life	Repace lamp and check
	Ballast Broken	Replace ballast and check
	FMT does not turn on video	Check diagnostic code. Check circuit indicated.
No	DVI cable not connected	check DVI connections
Picture,	Engine power missing	Check connections PA2-CN102
bad	Engine is blanked.	Check control connections FC-FC, KC-CN3100.
picture	FMT not providing video signal	Check FMT Board.
	Engine broken	Replace engine and check.
High	No power to Shutter	Check 18V from Power board PB pin4. Check
		connections PB-PB, KD-CN1
Contrast
	No control of shutter	Check connections CN5-JG, JG-KD, KD-CN2
Unit not
	FMT does not control shutter	Replace FMT and check.
W orking
	Shutter broken	Replace engine.
	Fan not working. Temp sensor.	Check error code and check indicated fan or sensor.
Set Shuts	Filter clogged	Check filter and clean or replace.
down after	Temp sensor problem	Check error code. Check connections DT-KB, LT-KB.
a while		Check sensor
	Air path blocked	Check air flow from each engine fan.

LCD ENGINE INTERNAL LAYOUT

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