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LG GX / SPN5-W User Manual
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Copyright © 2020 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
HOW TO DISASSEMBLE THE MAIN UNIT
1) Remove the 3 screws. (1SZZR-0098H)
2) Remove the 21 screws. (FAB31442101)
3) Remove the button PCB.
22
24
Table of Contents
Table of Contents
3
Product Safety Servicing Guidelines for Audio Products
4
Servicing Precautions
5
General Servicing Precautions
5
Insulation Checking Prodedure
5
Electrostatically Sensitive (Es) Devices
5
Hidden Key Mode
6
Software Update Guide
7
Specifications
15
Disassembly Instructions
17
How to Disassemble the Main Unit
18
How to Disassemble the Subwoofer
25
Exploded Views
28
Main Unit (Gx) Section
28
Wireless Subwoofer (Spn5-W) Section
30
Packing Accessory Section
32
Wiring Diagram
35
Block Diagram
36
One Point Repair Guide
37
Booting When You Turn the Unit On, no Message or "Hello" on Front Panel
37
Sound
41
Protection Error
45
Waveforms of Major Check Point
47
Crystal
47
Flash Memory
47
Usb
48
Remote Control
49
Optical
50
Circuit Voltage Chart
52
IC Voltage
52
Capacitor Voltage
53
Connector Voltage
53
Printed Circuit Board Diagrams
54
Main P. C. Board Diagram
54
Amp P. C. Board Diagram
55
Front P. C. Board Diagram
56
Usb P. C. Board Diagram
56
Key P. C. Board Diagram
56
Wiring Diagram
59
Block Diagram
60
One Point Repair Guide
61
Power on Error
61
Wireless Connection
63
Waveforms of Major Check Point
64
Crystal
64
Flash Memory
64
Voltage
65
Amp Voltage
66
Pwm
67
Led
68
Circuit Voltage Chart
70
Printed Circuit Board Diagrams
71
Woofer Smps & Amp P. C. Board
71
Wiring Diagram
73
Block Diagram
74
One Point Repair Guide
75
Electrical Troubleshooting Guide
77
Waveforms
78
Printed Circuit Board Diagrams
80
Wireless Receiver Smps P. C. Board
80
Wireless Receiver Amp P. C. Board
81
4
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LG GX / SPN5-W Specifications
General
Brand
LG
Model
GX / SPN5-W
Category
Speaker System
Language
English
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