21
DV-120-K
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 J8001
about 0.5
V
p-p?
Check connection at RCA
Cable.
Yes
Yes
N
o
N
o
Change IC4001.
Is there
waveform at pin 93 of IC4001
about 3.3
V
p-p ?
Check Q8005 and
peripheral circuit.
N
O A
N
ALOG AUDIO O
N
PLAYBACK
Is there
AUDIO signal at pins 1 and 7
of IC8003 ?
Yes
Is there
AUDIO signal at
C8053 and C8051 ?
N
o
Check J8003 and peripheral
circuit.
Yes
N
o
Check at pins 116 and 118
of IC4001
Change IC8003.
