LG SPH4B-W Service Manual

1-8
Copyright © 2021 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
1. Preparation
1) SL4Y Series Units : Main Unit, Wireless Subwoofer Unit, Rear Speaker Unit(optional).
2) SL4Y RCU.
3) USB Memory.
4) Android Device with “Music Flow Bluetooth” App for FOTA update, “Version Check APP” for Version Check.
※ Take care not to power off during update.
※ Do format USB memory before update (FAT32 fi le system).
FIRMWARE UPDATE GUIDE
<Main Unit>
Necessary
<Wireless Subwoofer Unit>
If wireless subwoofer rx module
of primary unit is updated.
<USB Memory>
for USB update
<Rear Speaker Unit>
Optional as model suffi x
If wireless rear rx module is updated
<RCU>
Necessary

LG SPH4B-W Specifications

General

Brand	LG
Model	SPH4B-W
Category	Speaker System
Language	English