LG SJ2 Service Manual

3-8
ELECTRICAL TROUBLESHOOTING GUIDE
3. POWER AMP PART
YES
YES
YES
YES
YES
YES
YES
Power AMP part
OK
Refer to
Power part troubleshooting.
Check IC104.
Replace the related part.
Check input power of IC500
pin2, 3, 34, 35, 40, 41, 44, 45 21 V input.
Check I2S signal input IC500 pin20, 21, 22.
Check IC305 I2S signal output.
NO
NO
NO
The main power of 21 V.
Check IC500 pin13, 27
3.3 V input.
Check resistance R370, R376, R377.

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