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No Sound
Check following steps.
Check if the audio sig-
nal is observed at pins
10 and 21 of IC5001.
Yes
Check if the audio sig-
nal is observed at pins 5
and 7 of IC5041.
Yes
Check audio output circuit.
Check speaker, connection of the terminal "K8F"
No
Check IC5001 and peripheral circuit.
Check 9V_AUDIO, 16V power supply.
No
Check IC5041, 9V_AUDIO and peripheral circuit.
Check the Mute signal at pin 7 of IC5041. The Mute signal is output from
pin 201 of IC 301<Scaler>. The OUT_DET signal is sent from Audio Out
terminal.
Mute-On: H at pin 201 of IC301, L at pin7 of IC5041
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Troubleshooting
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