Pioneer DV-600AV-S Service Manual page 26

1
NO 5.1CH AUDIO ON
PLAYBACK
A
Is there
AUDIO signal at pins 7 and 8
of IC8003, IC8004
and IC8005 ?
B
Is there
waveform at pins 1,2
and 3 0f IC8003, IC8004
and IC8005 ?
C
Change IC4002.
THE OUTPUT OF 21PIN DOESN'T
CHANGE (COMPOSITE-RGB)
D
When 21 pin output is RGB,
Is there voltage at pin 16 of
21pin about 4.5V
(No load)?
Is the
E
voltage at pin 188 of IC4002
about 3.3Vp-p ?
Check IC4002 and
peripheral circuit.
F
26
1
2
Yes
No
Yes
voltage at pin 6 of IC8003, IC8004
No
Yes
No
Yes
No
DV-600AV-S
2
3
Is there
and IC8005 about 5V ?
YES
Change IC8003, IC8004
and IC8005.
3
4
Check J8001, J8002 and
peripheral circuit.
No
Check AT +5V.
Check 21pin cable and
connection.
Check Q8104, Q8105 and
peripheral circuit.
4