25
DV-49AV
5
6
7
8
5
6
7
8
A
B
C
D
E
F
N
O DIGITAL AUDIO O
N
PLAYBACK OF COAXIAL JACK
Is there
waveform at pin 2 of J
8
102
about 0.5
V
p-p?
Check connection at RCA
Cable.
Yes
Yes
N
o
N
o
Change IC4002.
Is there
waveform at pin 215 of IC4002
about 3.3
V
p-p ?
Check Q
8
103 and
peripheral circuit.
N
O A
N
ALOG AUDIO O
N
PLAYBACK
Is there
AUDIO signal at pins 7 and
8
of IC
8
003 ?
Yes
003 ?
Is there
voltage at pin 6 of IC
8
003
about 5
V
?
N
o
Check J
8
001 and peripheral
circuit.
Yes
Yes
N
o
N
o
Check AT+5
V
.
Change IC4002.
Change IC
8
003
.
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TEL 13942296513
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2
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Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
