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MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
Page 35
LCD ENGINE INTERNAL LAYOUT
Symptom Cause What to check
FMT does not turn on lamp due to fault
detection
Check error code on front pannel. Check problem
indicated.
No DC supply to ballast Check power PWB PL connector for approx. 340VDC.
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.
DVI cable not connected check DVI connections
Engine power missing Check connections PA2-CN102
Engine is blanked. Check control connections FC-FC, KC-CN3100.
FMT not providing video signal Check FMT Board.
Engine broken Replace engine and check.
No power to Shutter Check 18V from Power board PB pin4. Check
connections PB-PB, KD-CN1
No control of shutter Check connections CN5-JG, JG-KD, KD-CN2
FMT does not control shutter Replace FMT and check.
Shutter broken Replace engine.
Fan not working. Temp sensor. Check error code and check indicated fan or sensor.
Filter clogged Check filter and clean or replace.
Temp sensor problem Check error code. Check connections DT-KB, LT-KB.
Check sensor
Air path blocked Check air flow from each engine fan.
Set Shuts
down after
a while
OPTICAL ENGINE TROUBLESHOOTING
No Light
No
Picture,
bad
picture
High
Contrast
Unit not
Working