No Sound - Sanyo PLC-XD2200 Service Manual

Troubleshooting

No Sound

Check following steps.
check if the audio signal
is observed at pins 3 and
13 of Ic5002.
Yes
check if the audio signal
is observed at pins 2 and
9 of Ic5001.
Yes
check if the audio signal
is observed at pins 5 and
8 of Ic5031.
Yes
Check audio output circuit.
Check speaker, connection of the terminal "K8F" .
Check IC5002 and peripheral circuit.
No
Check the Pins 7 and 16 of IC5002, the voltage is respectively -7V and
5V.
Check the pin 10 of IC5002.
No
Check IC5001 and peripheral circuit.
Check 9V power supply.
Check IC501 and peripheral circuit.
Check the Mute signal at pin 1 of IC501. 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 IC501.
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