Pioneer DV-2022 Service Manual page 18

1
A
DOES NOT LIGHT ON DISPLAY
Is the voltage at pin 7 and
pin 21 of IC601 about 3.3V?
B
Yes
Replace V651 or IC601.
C
NO PLAYBACK PICTURE OF
AV JACK
Is there a voltage
(beam current) at Q2302
and Q2303?
D
Yes
Is there a signal at pin 100
of IC4001?
Yes
E
Is there video signal at
J7302.
No
Change IC4001.
F
18
1
2
No
No
No
Yes
DV-2022
2
3
Check AT+3.3V line of POWER BLOCK.
Check LOADER BLOCK.
Check IC4001 and peripheral circuit.
Check J7302 and peripheral circuit.
3
4
4