Hitachi PJ1065 Service Manual page 17

Picture is displayed when the
Digital or RGB is inputted.
Change the PWB
DRIVE.
It is repaired ?
YES
PWB ass'y DRIVE
Picture is not displayed (is wrong)
when the all signals are inputted.
Change the PWB
DRIVE.
It is repaired ?
YES
PWB ass'y DRIVE
NO
Change the PWB
RGB.
It is repaired ?
YES
PWB ass'y RGB
NO
Does a start up
screen come up ?
YES
Change the PWB
RGB.
Is the RGB signal
displayed ?
YES
PWB ass'y RGB
NO
PWB ass'y VIDEO
NO
Check the DC
YES
voltage on EDS2, PWB
ass'y DRIVE
correct ?
NO
1 : +9V
3 : +16.5V
5 : +5V
7 : +5V(standby)
9 ~11 : +4.3V
NO
Change the PWB
NO
ass'y VIDEO.
Is the issue fixed ?
YES
PWB ass'y VIDEO
LCD Panel
Power unit (Circuit)
17