LG SJ2 Service Manual

3-3
ONE POINT REPAIR GUIDE
2. SPEAKER NO AUDIO OUTPUT
No audio output problem occurs when you power on the unit.
2-1. Solution
Replace IC500.
2-2. How to troubleshoot (Countermeasure)
1) Check L504, L505. If it is not appear 21 V, please check the switch power supply board.
2) 21 V the voltage is normal, please check IC500 pin20, 21, 22 I2S signal.
3) If it is not I2S signal, check IC305 and IC304.
4) There are I2S signal, check whether IC500 damage.
2-3. Service hint (Any picture/ Remark)
< MAIN board bottom view >
L504
L504
L505
L505
IC500
IC500

LG SJ2 Specifications

General

Style	Wireless Soundbar
Color	Black
Channels	2.1
Total Power	160 W
Speaker Units	-
Internal Memory	-
Radio Tuner	-
Wireless Connectivity	Bluetooth
Interface Connectors	Optical Input 1 ea
Sound Modes	Sports
Max Sound Pressure Level (SPL)	-
Signal to Noise Ratio	-
Frequency Response	-
Features	Crystal Amplifier Pro
Audio Processing	-
Water / Dust resistance	-
Power Supply	~ 50/60Hz
Power Consumption	-
Battery Life	-
Battery Capacity	-

Weight and Dimensions

Depth	3.9 in
Height	2.2 in
Width	25.9 in
Net Weight	3.75 lbs