LG LM-M1030A Service Manual page 27

FUNCTION MODE Audio abnormal
TAPE
Check the signal input of IC601 pin 28, 37
Refer to IC202 Troubleshooting
AUX
Check the signal input of IC601, pin 29, 36
Check the signal input of JK102
CD
Check the signal input of IC601 pin 31, 34
Check the signal of CN513 pin1, 3 or
Refer to CD Troubleshooting
Tuner
Check the signal input of IC601 pin 30, 35
Refer to TUNERMODULE
MIC
Check the OW601
Refer to IC404 Troubleshooting
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