Service manual

EPSON ELP-3500 Service Manual
4-5
Figure 4-4.
Video Display Mode
START
(Display Mode is OK.)
Check the projector with
a PC. Is PC input OK?
Reconnect CN100 and
CN101 on the main board.
Is PC input OK now?
Replace the main board.
Is PC input OK now?
Replace the driver
board.
NO
NO
NO
YES
YES
YES
NO
NO
NO
NONO
NO
NO
Does the Brightness
control work with the
video menu?
Does the Brightness
control work with the
video menu now?
Replace the driver
board.
Replace the main
board.
Go to “Audio Mode.”
Is loop throughput
OK?
Replace the main
board.
Is loop throughput
OK now?
Replace the driver board.
YES
YESYES
YESYES
YES
YES
Replace the interface
unit.
Is PC input OK now?
NO
YES
Is video input OK?
Replace the main
board.
Is video input OK
now?
Replace the driver
board.
Is video input OK
now?
Replace the
interface unit.