Pioneer DV-120-K Service Manual page 21

5
NO DIGITAL AUDIO ON
PLAYBACK OF COAXIAL JACK
Is there
waveform at pin 2 of J8001
about 0.5Vp-p?
No
Is there
waveform at pin 93 of IC4001
about 3.3Vp-p ?
No
Change IC4001.
NO ANALOG AUDIO ON
PLAYBACK
Is there
AUDIO signal at pins 1 and 7
of IC8003 ?
No
Is there
AUDIO signal at
C8053 and C8051 ?
Yes
Change IC8003.
5
6
Yes
Yes
Yes
No
DV-120-K
6
7
Check connection at RCA
Cable.
Check Q8005 and
peripheral circuit.
Check J8003 and peripheral
circuit.
Check at pins 116 and 118
of IC4001
7
8
A
B
C
D
E
F
21
8