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