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SJC8
LG SJC8 Service Manual
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3-2
Copyright © 2017 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Main
HDMI IN/OU
T
Front
5char (DIM)
DC JACK
OPT JACK
USB JACK (SVC)
DC/DC (25 V TO 1
2 V)
4 KEY
Main
DC JACK
USB JACK (SVC)
LED (Power)
4 KEY
BT LED
(DIM)
White
SMSC
AIROHA
BT (2.4G)
WLS
(5G)
BATTERY
SMSC
BT (CSR)
KEY
KEY
BT_LED
Ha
rnes
s
4
P
FFC 4P
FFC 12
P
Ha
rnes
s 1
4
P
Harness
5P
FFC
12P
FFC 26
P
FFC 26
P
FFC 26
P
FFC 10
P
Ha
rnes
s
4
P
PRIMARY UNIT
SECO
NDAR
Y UNIT
WIRING DIAGRAM
36
38
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
Other manuals for LG SJC8
Owner's Manual
73 pages
4
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LG SJC8 Specifications
General
Brand
LG
Model
SJC8
Category
Speaker System
Language
English
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