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Troubleshooting
No Sound
Check following steps.
check if the audio signal
is observed at pins 19
and 23 of Ic5002.
Yes
check if the audio signal
is observed at pins 1 and
7 of Ic5001.
Yes
check if the audio signal
is observed at pins 36
and 42 of Ic001.
Yes
Check audio output circuit.
Check speaker, connection of the terminal "K8F" .
No
Check IC5002 and peripheral circuit.
Check the Pins 7 and 2 of IC5002, the voltage is respectively .V and
1.8V.
No
Check IC5001 and peripheral circuit.
Check S-7V and S5V power supply.
Check IC001 and peripheral circuit.
Check the Mute signal at pin 1 of IC001. The Mute signal is output from
No
pin 267 of IC 01<Scaler>. The OUT_DET signal is sent from Audio Out
terminal.
Mute-On: H at pin 267 of IC01, L at pin 1 of IC001.
Check the AMP-STBY signal at pin 2 of IC001. The AMP-STBY signal is
output from pin 182 of IC01.
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