Troubleshooting
Procedure2-1
Video CD
No picture or No sound
Troubleshooting flowchart
(Check)
(Check)
Load a video CD disc.
TOC display normaly? (Are track
No. and time displays normal?)
Does the menu appear on screen?
Check the waveforms at pin of IC702 or
pin of CN1000.
Image noise or unstable picture.
Is the sound unstable?
Video line
Audio line
Constant low(0V)
level 0V
The following waveform is observed either
intermittently constantly during playback.
3.2V
3.0V
3.2V
23 s
T=0.36 s
T=0.36 s
23 s
Are the following waveforms present at pins , of CN1001?
24
10
Traverse deck. IC701, IC702
Faults is in the traverse deck
or main board (servo block).
IC1000
Press the SELECT( ) button to start playback.
NO
NO
NO
NO
YES
NO
YES
YES
YES
YES
Normal
Press the STOP( )button
to stop playback.
Press the menu(+,-) to select the menu. Press
the select ( ) to start playback.
10
CDDATA
24
CDSCK
Procedure 2-3
Procedure 2-4
Not connected to TV
Connected to TV
Likely location of fault
64
6
