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Home Theater System
W4-4
Page 2
LG W4-4 - Page 2
145 pages
Manual
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1-1
CONTENTS
SECTION 1
........
SUMMARY
SECTION 2
........
ELECTRICAL
SECTION 3
........
CABINET & MAIN CHASSIS
SECTION 4
........
MT8580 F/E LOADER PART
SECTION 5
........
WIRELESS RECEIVER PART
SECTION 6
........
REPLACEMENT PARTS LIST
1
3
Table of Contents
Main Page
Section 1 Summary
3
Table of Contents
3
Product Safety Servicing Guidelines for Bd-Hts Products
4
Servicing Precautions
5
General Servicing Precautions
5
Insulation Checking Prodedure
5
Electrostatically Sensitive (Es) Devices
5
Initial System Setup
6
Hidden Key Mode
8
Firmware Update Guide
9
Network Software Update
12
Specifications
14
Section 2 Electrical
16
Digital Display & Media Training Master
17
Distorted Picture
17
Picture
22
Picture Color
27
Noise/Audio Problems
29
Miscellaneous
32
Blu-Ray Player
41
One Point Repair Guide
42
Power Problem
42
Booting When You Turn the Unit On, no Message or "Welcome" on Front Panel
44
Wired Network Connection Error
54
Wireless Network Connection Error
55
Bad Hdmi Video / Audio Output
56
Audio from Speaker
57
Usb
58
Electrical Troubleshooting Guide
59
System Power Supply on Smps Board
59
Amp Power Supply on Smps Board
62
Power Supply on Main Board
63
System Part
69
Hdmi Output
71
Audio Output
72
Waveforms
73
System Part - 1 (Mpeg Crystal 27 Mhz)
73
System Part - 2 (Ddr3 Memory)
74
SYSTEM PART - 3 (Emmc FLASH MEMORY)
75
Audio Part - 1 (S/Pdif)
76
Audio Part - 2 (I2S)
77
Hdmi Part
78
Wiring Diagram
80
Block Diagram
81
Circuit Diagrams
82
Smps Circuit Diagram
82
Main - Micom Circuit Diagram
83
Main - Power Circuit Diagram
84
Main - Mpeg Circuit Diagram
85
Main - Memory Circuit Diagram
86
Main - Front End Circuit Diagram
87
Main - Dsp Circuit Diagram
88
Main - Adc/ MIC Circuit Diagram
89
Main - I/O Circuit Diagram
90
Amp - Pwm Circuit Diagram
91
Amp - Amp Circuit Diagram
92
Jack Circuit Diagram (Optional Part)
94
Front Circuit Diagram
95
Touch Circuit Diagram
96
Circuit Voltage Chart
97
Printed Circuit Board Diagrams
98
Smps P. C. Board
98
Main P. C. Board
100
Amp P. C. Board
101
Jack P. C. Board (Optional Part)
102
Front P. C. Board
103
Touch P. C. Board
103
Section 3 Cabinet & Main Chassis
104
Exploded Views
106
1 Cabinet and Main Frame Section
106
2 Deck Mechanism Section
107
3 Packing Accessory Section
108
4 Speaker Section
109
Center Speaker
109
Front/ Rear Speaker
110
Passive Subwoofer
111
5 Wireless Receiver Section
112
Section 4 Mt8580 F/E Loader Part
114
Ld Check Guide
115
Purpose
115
Ld Check Procedure
115
How to Use the Sa Reset Function
116
Purpose
116
Required Sa Reset
116
Sa Reset Procedure
116
Major IC Internal Block Diagram and Pin Description
118
Ic501 (Mt8580)
118
Ic701 (Tpic2050): 9Ch Motor Drive with 3 Beam Laser Diode Driver
121
Pick-Up Connector Terminal Pin Assignments
123
Block Diagram
124
Section 5 Wireless Receiver Part
126
Firmware Update for Wireless Device
127
Wireless Rx Update Method
127
Wireless Tx Module Update Method
127
One Point Repair Guide
128
Power Problem
128
Sound
131
Electrical Troubleshooting Guide
133
Power Supply on Smps Board
133
Pairing
134
Sound
135
Waveforms
136
Wiring Diagram
138
Block Diagram
139
Circuit Diagrams
140
Smps Circuit Diagram
140
Amp #1 Circuit Diagram
141
Amp #2 Circuit Diagram
142
Printed Circuit Board Diagrams
143
Smps P. C. Board
143
Amp P. C. Board
144
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