Toshiba SD-V280 - Page 82

E-30
TROUBLESHOOTING GUIDE
Are there waveform
at line HA1-HA17.
Change IC4006
NO
NO
NO
NO
YES
YES
DVD screen without going out
Is there video signal
at pin 27 of IC8504.
Check IC8005
and peripheral circuit.
Is there waveform
at pin 102,103,105 and
106 of IC4001.
Is there waveform
at pin 120 of IC4001.
Check IC8504
and peripheral circuit.
Is X8501 oscillating?
NO
Change X8501.
YES
YES
Change IC8501.
YES
Change IC4001.