LG SPH5B-W Service Manual

3-5
ONE POINT REPAIR GUIDE
3. NO SOUND (PORTABLE FUNCTION)
3-1. Solution
Replace IC508 or portable jack (JK854).
3-2. How to troubleshoot (Countermeasure)
1) Please check the soldering status of portable jack (JK854).
2) Please check L854, L855 (portable L/R signal) of portable jack (JK854).
If you can’t find input signal, replace JK854.
3) If you can find input signal, check pin13, 14 of IC508.
4) If you can’t find signal at pin13, 14 of IC508, replace IC508.
3-3. Service hint (Any picture / Remark)
< MAIN board top view >
JK854
JK854
IC508
IC508
L855
L855
L854
L854

LG SPH5B-W Specifications

General

Brand	LG
Model	SPH5B-W
Category	Speaker System
Language	English