19
TROUBLESHOOTING HINTS
3. No Raster
Is 12V
plugged in pin 5
of CN2(power
board)?
No
No
Yes
Yes
Is the output of
inverter correct?
Check the output of
12V line(power board).
Replace the inverter.
Replace a LCD panal.
low
high
Check the
output of Q1 or
pin 15 of U14.
Trouble in Q1 or
pin 15 of -com.
No Raster
Yes
