Pioneer DV-48AV Service Manual page 26

1
QQ
3 7 63 1515 0
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.
TE
L 13942296513
NO OPTICAL OUT
D
Is there
voltage at pin 2 of OS8101
about 5V ?
Is there
E
waveform at pins 1 of
OS8101 about 2.5V ?
www
Change OS8101.
F
26
1
http://www.xiaoyu163.com
2
Yes
No
Yes
voltage at pin 6 of IC8003, IC8004
No
No
Yes
Yes
No
x ao
y
. i
2
http://www.xiaoyu163.com
3
8
Is there
and IC8005 about 5V ?
YES
Change IC8003, IC8004
and IC8005.
Q Q
3 6 7 1 3
u163
.
DV-48AV
3
4
2 9 9 4 2 8
Check J8001, J8002 and
peripheral circuit.
No
Check AT +5V.
1 5 0 5 8 2 9
Check P.CON +D5V line.
REFER TO "NO DIGITAL
AUDIO ON PLAYBACK OF
COAXIAL JACK".
m
co
4
9 9
9 4 2 8 9 9