LG SJ8S Service Manual

3-8
Copyright © 2017 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
ONE POINT REPAIR GUIDE
PRIMARY UNIT
2. NO SOUND
2-1. BLUETOOTH
2-1-1. Solution
Replace MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please check status of Bluetooth cable connection. (at CN102 and BT Module)
2) Please check 3.3 VA (at pin12 of CN102).
If 3.3 VA is OK, please check BT_RESET, BT_SPDIF, BT_RX, BT_TX (pin11, 9, 1, 2). If no signal,
please replace MAIN board. If no signal, please replace MAIN board.
2-1-3. Service hint (Any picture / Remark)
< MAIN board top view >
CN102
CN102
CN102
CN102
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LG SJ8S Specifications

General

Brand	LG
Model	SJ8S
Category	Speaker System
Language	English