TROUBLESHOOTING GUIDE
E-32
Change IC4001.
YES
YES
YES
NO
NO
NO
Are there waveform
at pin 20, 23 of IC8503?
Is the voltage at pin 3
of CP8502 about 5V?
Change IC8503.
Check IC8004
and peripheral circuit.
Are there waveform
at pin 136, 139 and 141
of IC4001?
YES
Check IC2001
and peripheral circuit.
NO
Check IC8503
and peripheral circuit.
DVD/CD ANALOG AUDIO DOES
NOT APPEAR
Are there waveform
at line of DVD DATA 0-7?
Summary of Contents for SD-22VB
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