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SPH5B-W
LG SPH5B-W Service Manual
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3-26
3-25
PWM
PS9860
ML
C3730ST
Wireless
TX
Wireless
RX
WL_RESET/WL_MUTE/WL_INT/WL_MSG_RDY
WL_CL
K/WL_D
AT
PWM_SD
A/SCL
PWM_MUTE
PWM_RST
MCS_TX_LRCK
MCS_TX_ADATA 0
MCS_TX_ADATA 1
MCS_TX_ADATA 2
MCS_TX_BCK
PWM_TX_LRCK/B
CK/ADATA2
Sil9533
FL
LPF
AMP
I
C
TAS5612
LA
AMP
I
C
TAS5612
LA
FR
LPF
AMP_FAULT/AMP_PD
N/DC_PROTECTIO
N
FL_P/FL_N
FR_P/FL_N
HDMI_I2S_BCK
HDMI_I2S_LRCK
HDMI_D
NMX_ADA
HDMI OUT
HDMI IN
H
HPD_TX/DDC_S
DA/DDC_SCL
ARC
HPD_RX/
DDC_SDA/DDC_SCL
HDMI_CEC
HDMI_SDA/SCL
BT_ADATA
HOT_PLUG_DET
BT
CSR
BT_CTS/BT_RTS/BT_RX/TX
BT_RST
BT_SCL/BT_SDA
HDMI_SDA/SCL
CS8422
DIR_LRCK/DIR
_BCK/DIR_ADATA
PCM1808
ADC_BC
K
ADC_L
RCK
ADC_AD
ATA
DIR_MCLK
DIR_INT/DIR_TEMP
DIR_
RCBL
DIR_CSD
DIR_
RST
DIR_
SDA/SCL
OPT IN
PTB IN
PORT_DET
OPT_IN
OPT_DET
ARC_SPDI
F
AUDIO OUT
AUDIO IN
BLOCK DIAGRAM
44
46
Table of Contents
Section 1 General
3
Table of Contents
3
Esd Precautions
4
Wireless Subwoofer Connection
5
Hidden Key Mode
6
Mcs / Eq Program Update Guide
7
Specifications
8
Section 2 Cabinet & Main Chassis
10
Disassembly Instructions
11
How to Disassemble the Main Set
12
How to Disassemble the Woofer
17
Exploded Views
18
Main Set Section
18
Wireless Subwoofer Section
19
Packing Accessory Section
20
Section 3 Electrical
22
One Point Repair Guide
23
Power Problem (Pvdd)
23
Power on Error
25
Sound (Portable Function)
26
Wireless
27
Bluetooth
28
Sound (Usb)
29
Sound (Optical)
30
Hdmi Problem
31
D(DC) Protection
32
S(Shut Down) Protection
33
B(Burnt) Protection
34
Waveforms of Major Check Point
35
Crystal
35
Flash Memory
36
Tact Key
37
Usb
38
Remote Control
39
Optical
40
Portable
41
Audio Pwm
43
Wiring Diagram
44
Block Diagram
45
Circuit Diagrams
46
Main - Dsp Circuit Diagram
46
Main - Pwm & Amp Circuit Diagram
47
Main - Power Circuit Diagram
48
Main - Hdmi & Jack Circuit Diagram
49
Front Circuit Diagram
50
Key Circuit Diagram
51
Circuit Voltage Chart
52
Printed Circuit Board Diagrams
53
Main P. C. Board Diagram
53
Front P. C. Board Diagram
54
Key P. C. Board Diagram
54
Section 4 Wireless Subwoofer Part
56
One Point Repair Guide
57
Power on Error
57
Wireless Connection
59
Waveforms of Major Check Point
60
Crystal
60
Flash Memory
60
Voltage
61
Amp Voltage
62
Pwm
63
Led
64
Wiring Diagram
66
Block Diagram
67
Circuit Diagrams
68
Woofer Smps & Amp - Smps Circuit Diagram
68
Woofer Smps & Amp - Amp Circuit Diagram
69
Circuit Voltage Chart
70
Printed Circuit Board Diagrams
71
Woofer Smps & Amp P. C. Board
71
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LG SPH5B-W Specifications
General
Brand
LG
Model
SPH5B-W
Category
Speaker System
Language
English
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