LG SPJ2B-W Service Manual

3-10
ELECTRICAL TROUBLESHOOTING GUIDE
5. OPTICAL FUNCTION
YES
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
Optical function
OK
Replace the related part.
Refer to
Power part troubleshooting.
Refer to
Power part troubleshooting.
If it does not oscillate, replace XL300.
Check C302 3.3 V voltage.
Check XL300(Crystal).
Check C321.
Replace the related part.
NO
NO
NO
Check JK301.
Check IC300
pin27, 28, 29 SDOUT.
Check FB300, R300.
Check IC300 pin3, 19, 22
3.3 V.
Check IC300 pin6
input waveform.

LG SPJ2B-W Specifications

General

Brand	LG
Model	SPJ2B-W
Category	Speakers
Language	English