LG SPH4B-W Service Manual

4-5
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Only for training and service purposes.
ONE POINT REPAIR GUIDE
4. WIRELESS CONNECTION
Wireless connection malfunction
4-1. 3.3 VA
1) Check 3.3 VA at WL616.
4-2. Connection
1) Wireless module connection closely.
2) Implement Wireless Factory Reset.
 MAIN SET : Soundbar vol MIN and push Mute key (sustain 3 ~ 5 sec).
 Subwofer :  Push Pairing key on the back case of the wireless subwoofer.
   The LED of of the wireless subwoofer blink red and green, pull out power cord.
   The main set and the wireless subwoofer are factory reset mode, then power on.
< Woofer KEY board top view >
< Woofer AMP board top view >
3.3 VA
3.3 VA
at WL616
at WL616
Wireless module
Wireless module
Connection check
Connection check
Pairing key
Pairing key

LG SPH4B-W Specifications

General

Brand	LG
Model	SPH4B-W
Category	Speaker System
Language	English