LG SJ9 - Advanced Listening Modes; Group Playback

3-8
ONE POINT REPAIR GUIDE
2. NO SOUND
2-1. BLUETOOTH
2-1-1. Solution
Replace Bluetooth module/ MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please check status of Bluetooth cable connection (at CN201 and BT Module).
2) Please check 3.3 VA (at pin1 of CN201).
If 3.3 V is OK, please check BT_RST, BT_UART_RX,BT_UART_TX, BT_SCL, BT_SDA (pin2, 5, 7, 9, 10).
If no signal, please replace MAIN board.
2-1-3. Service hint (Any picture / Remark)
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< MAIN board top view >
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CN201
CN201