TROUBLESHOOTING GUIDE
THE PICTURE DOES NOT
APPEAR
Is there signal at pins
7,9,10,12,13,22,23,25,26
and 28 of CP2804? Change V2801(PANEL).
Change DIGITAL PCB.
Does backlight shine?
Is CD2804 connected? Connected CD2804.
Is CD7005 connected ? Connected CD7005
Yes
No
No
No No
Yes
Yes
Yes
Yes
No
Check Q3009 and peripheral
circuit.
Is there voltage at pins 1,2,3
and 16,17 of CP2804 5V?
Is the signal pin 16
and 18 of IC7001 ?
Is the voltage at pin
20 of IC7001 12V ?
Yes
Yes
Check IC7001 and
peripheral circuit.
Check F7001.
No
No
E-3