Hitachi CP-X980W Service Manual page 18

CP-X980W
CP-X985W
Picture is not displayed (is wrong)
when the VIDEO Signal
Change the PWB
DRIVE. Does picture
PWB ass'y DRIVE
Picture is not displayed (is wrong)
when the all Signals
Change the PWB
DRIVE. Does picture
PWB ass'y DRIVE
18
NO
is displayed ?
YES
NO
is displayed ?
YES
Does a start up
screen display it ?
Change the PWB
RGB. Picture is displayed.
Does a RGB picture
PWB ass'y RGB
Change the PWB
NO
RGB. Does picture
is displayed ?
YES
PWB ass'y RGB
NO
YES
It input power of
PWB ass'y DRIVE
correct ?
EDS2
NO
NO
display it ?
YES
Change the PWB
ass'y VIDEO. Does a picture
of anything display it ?
PWB ass'y VIDEO
PWB ass'y VIDEO
YES
LCD Panel
1 : +9V
3 : +16.5V
5 : +5V
7 : +5V(standby)
9 ~11 : +4.3V
NO
Power unit (Circuit)
YES