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Troubleshooting
CD-DA
Procedure1
Troubleshooting flowchart
Load a CD-DA disc.
Press the SELECT(
Press the STOP(
TOC display normal?
(Are track No. and time displays normal?)
Press the SELECT(
Does sound dropout occur?
Check pin
64
of IC702 or pin
(Check)
Constant low(0V)
level
0V
Are the following waveforms present at pins
IC702 when the 1kHz, 0dB portion of the 1st track on test disc
SZZP1056C played back?
No sound
) button to start playback.
)button to stop playback.
YES
) button to start playback.
YES
26
of CN1000.
The following waveform is observed either
intermittently constantly during playback.
IPFLAG
and
73
1 s
2.4V
YES
CD-DA: Compact disc digital audio(convertional CD only with audio tracks)
NO
NO
Normal
(go to procedure 2-1)
(Check)
6 s 6 s
3.2V
of
75
NO
Likely location of fault
Taverse deck. IC701, IC702
Refer to "Troubleshooting guide"
on 18.1. CD servo circuit.
Faults is in the traverse deck
or main board (servo block).
IC702
IC801, Q801, Q802,
headphones jack, etc.
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