LG SPH2B-P - Audio Output

3-11
ELECTRICAL TROUBLESHOOTING GUIDE
3. NO AUDIO OUTPUT
Optical function
Portable function (Optional part)
Check PN508, JK551 or Replace.
Check PN506, PN507, JK552.
Check IC101 or Replace.
Check IC201 or Replace.
Check IC201 or Replace.
Check IC921 or Replace.
Check IC701, IC702 output stage
and speaker terminal.
Check IC701, IC702 output stage
and speaker terminal.
Check IC101 or Replace.
IC201 pin6
OPT_IN signal OK?
IC921 pin13, 14
input signal OK?
IC101 D1, D2, E1, E4
I2S signal OK?
IC101 F1, F2, G1, G2
I2S signal OK?
IC101 F1, F2, G1, G2
I2S signal OK?
IC201 pin13, 14, 15
signal OK?
IC101 D1, D2, E1, E4
I2S signal OK?
NO
NO
NO
NO
NO
NO
NO
Pairing OK
YES
YES
YES
YES
YES
YES
YES