LG XA64 - Audio Function Mode

4. AUDIO FUNCTION MODE
Portable
Tuner
CD / USB
Check the input signal of CON541
Check the output signal of TU101 pin1, 2
Check the output signal of U502 pin55, 57
and refer to CD trobleshooting
Check the output signal of U503 pin19, 23
Check the output signal of U503 pin19, 23
Check the output signal of U503 pin19, 23
YES
YES
YES
NO
NO
NO
Check the input signal
of U503 pin7, 8
Check the input signal
of U503 pin1, 2
Check the input signal
of U503 pin3, 4
3-5
ELECTRICAL TROUBLESHOOTING GUIDE