Table of Contents
Advertisement
BenQ G700
5.3.2 Trouble Shooting Guide
Inverter trouble shooting
1. Backlight can't be turned on
No raster?
Yes
LED Blue?
Yes
Backlight can't
be turned on.
Yes
Is there 5Vdc
voltage on pin2
Yes
Is there high-level voltage
on pin10 of IC501?
Yes
Are connected rightly CN501,
CN502, CN503 and CN504?
Yes
Is there instantaneously pulse
wave on pin1, pin3, pin15 of
IC501 at the moment of restart?
Yes
Is ok T501, T502?
Yes
Check feedback circuit
No
Check power supply
No
Is Ok R501?
No
No
Is Ok IC501?
No
33
Service Manual
Yes
No
R501 open
Connecting the output
connector again
Yes
U501, U502 fail
No
IC501 fail
T501, T502 fail
END
Check I/F board
Hide quick links:
Advertisement
Table of Contents
