5. Troubleshooting
21
3
Image 5-41
Code 7733: “Engine switch open” (Error)
Situation Solution
The Light p rocessor is not correctly
installed.
Check if the Light processor is properly installed. Make sure that all three fixation scr e w s
(reference 1, 2 & 3 ) of the Light processor a re fastened. S ee installation p rocedure
"Installing th e Light Processor", page 196.
Defect micro switch.
Replace the micro switch.
Wire unit of the m icro switch
(reference 6 image 5-4 2 )
disconnected from the Power
distribution boar d.
Check if the wire unit (reference 6 image 5-42) is plugged in the Power Distribution board.
6
Image 5-42
Code 7800: “2.5V voltage high” (Error)
Situation Solution
Malfunction Fan Control B oard. Replace the Fan Control Board. See "Replacing the Fan control board", page 278.
Code 7801: “2.5V voltage low” (Error)
Situation Solution
Malfunction Fan Control B oard. Replace the Fan Control Board. See "Replacing the Fan control board", page 278.
Code 7802: “12V voltage low” (Error)
Situation Solution
Malfunction Switched mode power
supply
Check the 12 V LED on the S MP S board. Replace SMPS board.
Short circuit or bad connection. Check projector wiring for short circuits o r bad connections.
R5905312 HDF W SERIES 24/01/2013 73
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