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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.
2-18
2-17
251
251
A42S
A44S
262
263
264
A41S
265
E
464
282
464
464
282
464
281
281
A80S
BT
LED
KEY
WIRELESS
MAIN
SLAVE
I
G
H
D
H
C
G
A
B
A
B
F
F
I
E
D
C
464
464
464
272
276
278
290
277
272
464
464
CABLE9
CABLE6
CABLE8
CABLE7
A54S
A46S
261
464
464
464
[ TOP ]
[ BOTTOM ]
289
289
252
Attaching
Guide Line
273
271
275
274
A52S
A43S
A55S
CHAMBER SHEET ATTACHING GUIDE
BATTERY
2. SECONDARY UNIT SECTION
32
34
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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