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MODEL: WD-52526 / WD-62526
Page 34
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 LAMP-EN at FB pin 4. Check
LAMPLIT atFB-pin 1
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 (PWR) & CN102 on Engine
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 atPB 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
No Light
No
Picture,
bad
picture
High
Contrast
Unit not
Working
OPTICAL ENGINE TROUBLESHOOTING
Содержание WD-52526
Страница 2: ......
Страница 49: ...MODELS WD 52526 WD 62526 Page 49 Main Power Supply ...
Страница 50: ...MODELS WD 52526 WD 62526 Page 50 Lamp Ballast DC Supply Fans Power Supply ...
Страница 51: ...MODELS WD 52526 WD 62526 Page 51 Power Distribution ...
Страница 52: ...MODELS WD 52526 WD 62526 Page 52 Analog Video Signal Path ...
Страница 53: ...MODELS WD 52526 WD 62526 Page 53 Digital Video Signal Path ...
Страница 54: ...MODELS WD 52526 WD 62526 Page 54 Sound Signal Path ...
Страница 55: ...MODELS WD 52526 WD 62526 Page 55 Command Input Circuitry Serial Control Lines ...
Страница 56: ...MODELS WD 52526 WD 62526 Page 56 Lamp Control Circuitry Shutter Control ...
Страница 57: ...MODELS WD 52526 WD 62526 Page 57 Lamp Engine Fan Protect Circuitry ...
Страница 58: ...MODELS WD 52526 WD 62526 Page 58 ...