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LG SJ8S Service Manual
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Copyright © 2017 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
251
251
A42M
278
277
277
A41M
A44M
D
A80M
464
464
281
281
464
282
282
464
464
464
285
286
284
KEY
MAIN
MASTER
G
B
C
A
I
B
A
E
F
I
D
G
F
H
C
E
272
274
275
276
464
464
464
CABLE1
CABLE2
CABLE6
CABLE3
BT
FRONT
JACK
WIRELESS
WIRELESS
464
A54
LCD01
CABLE5
CABLE4
H
464
464
A54M
A46M
261
470
272
273
271
[ TOP ]
Attaching
Guide Line
[ BOTTOM ]
283
A52M
A43M
A48M
A55M
CHAMBER SHEET ATTACHING GUIDE
2-16
2-15
EXPLODED VIEWS
1. PRIMARY UNIT SECTION
31
33
Table of Contents
Section 1 General
3
Table of Contents
3
Esd Precautions
4
Name of each Component
5
Pairing Guide
6
Secondary Unit Connection
7
Wireless Subwoofer Connection
8
Hidden Key Mode
9
Firmware Update Guide
10
Specifications
15
Section 2 Cabinet & Main Chassis
18
Disassembly Instructions
19
How to Disassemble the Primary Unit
19
How to Disassemble the Secondary Unit
24
How to Disassemble the Subwoofer
30
Exploded Views
32
Primary Unit Section
32
Secondary Unit Section
33
Wireless Subwoofer Section
34
Packing Accessory Section
35
Section 3 Electrical
36
Wiring Diagram
37
Block Diagrams
38
Primary Block Diagram
38
Secondary Block Diagram
39
One Point Repair Guide
40
Primary Unit
41
Secondary Unit
49
Waveforms of Major Check Point
53
Primary Unit
54
Secondary Unit
57
Circuit Voltage Chart
60
IC Voltage
60
Capacitor Voltage
61
Connector Voltage
62
Printed Circuit Board Diagrams
63
Primary Unit
63
Secondary Unit
66
Section 4 Wireless Subwoofer Part
68
Wiring Diagram
69
Block Diagram
70
One Point Repair Guide
71
Power on Error
71
Wireless Connection
73
Waveforms of Major Check Point
74
Crystal
74
Flash Memory
74
Voltage
75
Amp Voltage
76
Pwm
77
Led
78
Circuit Voltage Chart
80
Printed Circuit Board Diagrams
81
Woofer Smps & Amp P. C. Board
81
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Owner's Manual
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LG SJ8S Specifications
General
Brand
LG
Model
SJ8S
Category
Speaker System
Language
English
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