-62-
Troubleshooting
No Sound
Check IC5001 and peripheral circuit.
Check IC5061, 12V power supply.
Check if the audio sig-
nal is observed at pins 7
and 15 of IC5001.
Check audio output circuit.
Check speaker, connection of the terminal “K8F”
Yes
No
Check following steps.
Check IC5031, IC5061 and peripheral circuit.
Check the Mute signal at pin 1 of IC5031. The Mute signal is output from
pin 101 of IC 301<Scaler>. The OUT_DET signal is sent from Audio Out
terminal.
Mute-On: H at pin 101 of IC301, L at pin1 of IC5031
Check if the audio sig-
nal is observed at pins 5
and 8 of IC5031.
Yes
No
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