Service manual

EPSON ELP-3500 Service Manual
4-4
Figure 4-3.
DISPLAY MODE
START
(System Init is OK.)
Go to
“Video
Display
Mode.”
Does the lamp light?
Replace the lamp.
Does the lamp light now?
Replace the driver board.
Check fuses F600 to F602
on the driver board. If blown
re
p
lace driver board.
Does the screen appear
now?
NO
NO
NO
NO
NO
NO
NO
Does the screen appear?
Check CN850, 900, 950
connections on the driver board.
Does the screen appear
now?
Reconnect the main board
and driver board.
NO
Does the screen appear
now?
Replace F600 on the driver
board.
Does the menu key work
normally?
(Menu screen appears.)
Does the menu key work
normally now?
Replace the main board.
Replace the driver board.
YES
YES
YES
YES
YESYES
YES
Replace the driver board.
Does the lamp light now?
Replace the power supply
NO
YES
YES
YES
NO
Does the screen appear
now?
Replace the safety switch on
the lamp’s outer housing.
Does the lamp light now?
NO
YES
Does screen appear now?
Replace the main board.
NO
YES