DV-48AV
26
1
2
4
1
2
3
4
C
D
F
A
B
E
Yes
No
NO 5.1CH AUDIO ON
NO OPTICAL OUT
PLAYBACK
Is there
AUDIO signal at pins 7 and 8
of IC8003, IC8004
and IC8005 ?
Is there
voltage at pin 2 of OS8101
Yes
Is there
waveform at pins 1,2
and 3 0f IC8003, IC8004
and IC8005 ?
Yes
Check J8001, J8002 and
peripheral circuit.
No
No
No
Check AT +5V.
Check P.CON +D5V line.
REFER TO "NO DIGITAL
AUDIO ON PLAYBACK OF
COAXIAL JACK".
Change IC4002.
Change OS8101.
Is there
voltage at pin 6 of IC8003, IC8004
and IC8005 about 5V ?
YES
Change IC8003, IC8004
and IC8005.
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9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
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4
2
9
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0
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1
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6
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3
Q
Q
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TEL 13942296513 QQ 376315150 892498299