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LG SH86TG-S User Manual
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DVD HOME CINEMA SYSTEM
SERVICE MANUAL
MODEL:
HT806TGW
(HT806TGW, SH86TG-S/C, SH95TA-W, W86)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
MODEL: HT806TGW (HT806TGW, SH86TG-S/C, SH95TA-W, W86)
SERVICE MANUAL
P/NO : AFN75474478
APRIL, 2011
Website http://biz.lgservice.com
Internal Use Only
2
Table of Contents
Section 1 Summary
3
Table of Contents
3
Servicing Precautions
4
Esd Precautions
6
Service Information for Eeprom
7
How to Update Audio Micom & DVD Programs
8
Specifications
9
Section 2 Electrical
12
Digital Display & Media Training Master
13
Distorted Picture
13
Picture
18
Picture Color
23
Noise/Audio Problems
25
Miscellaneous
28
One Point Repair Guide
37
Power Problem (High Voltage)
37
Audio Speaker (25 V / 30 V)
38
Power Problem (3.7 Va)
39
Vfd Doesn't Display
40
Power Problem
41
Speaker no Audio Output
42
Usb no Detect
43
Power Problem
44
Disc no Reading
46
Video Output Composite
47
Video Output Component
48
Booting
49
Electrical Troubleshooting Guide
50
Smps Board
50
Power Key Board
52
Front Board
53
Audio Check
54
Video Check
56
Hdmi no Audio/Video Check
57
System Operation Flow
58
Test & Debug Flow
59
Details and Waveforms on System Test and Debugging
65
System 27 Mhz Clock,Reset,Flash R/W Signal
65
Sdram Clock
66
Video Part-1 (100% Full Color-Bar)
67
Video Part-2 (100% Full Color-Bar)
68
Hdmi Part
69
Servo Open/Close Signal
70
Wiring Diagram
78
Block Diagram
79
Circuit Diagrams
80
Smps Circuit Diagram
80
Mpeg Circuit Diagram
81
Servo Circuit Diagram
82
I/O Circuit Diagram
83
Micom Circuit Diagram
84
I/O Jack Circuit Diagram
85
Pwm Circuit Diagram
86
Amp Circuit Diagram
87
Front and Power Key Circuit Diagram
88
Front Jack Circuit Diagram
89
Circuit Voltage Chart
90
Printed Circuit Board Diagrams
92
Main & Amp P.C. Board
92
Smps P.C. Board
94
Front P.C. Board
95
Power Key P.C. Board
95
Front Jack P.C. Board
95
Section 3 Cabinet & Main Chassis
96
Exploded Views
98
1 Cabinet and Main Frame Section
98
2 Deck Mechanism Section (Dp-16T)
99
3 Speaker Section
100
Center Speaker (Sh86Tg-C)
100
Front/ Rear Speaker (Sh86Tg-S)
101
Passive Subwoofer (Sh96Ta-W)
102
4 Wireless Receiver Section (W86)
103
5 Packing Accessory Section
104
Section 4 Mechanism (Dp-16T)
106
Deck Mechanism Parts Locations
107
Top View
107
Top View(Without Tray Disc)
107
Bottom View
107
Deck Mechanism Disassembly
108
1 Main Base
108
Clamp Assembly Disc
108
Plate Clamp
108
Magnet Clamp
108
Clamp Upper
108
2 Tray Disc
108
3 Base Assembly Sled
109
Gear Feed
109
Gear Middle
109
Gear Rack
109
4 Rubber Rear
109
5 Frame Assembly Up/Down
110
6 Belt Loading
110
7 Gear Pulley
110
8 Gear Loading
110
9 Guide Up/Down
110
10 PWB Assembly Loading
110
11 Base Main
110
Deck Mechanism Exploded View (Dp-16T)
111
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LG SH86TG-S Specifications
General
Brand
LG
Model
SH86TG-S
Category
Home Theater System
Language
English
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