LG LX-D2640 Service Manual page 11

Specific FUNCTION MODE has no sound
TAPE
YES
IC603 pin4, 11 signal input check
YES
Refer IC201 Troubleshooting
AUX/AUX2
YES
IC603 pin1, 12/pin5, 14 signal input check
YES
JK601 signal input check
CD
YES
IC601 pin3, 26 signal input check
YES
PN602 pin15, 17 signal input check
TUNER
YES
IC603 pin2, 15 signal input check
YES
Refer to Tuner pack troubleshooting
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