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S54T1-W
LG S54T1-W Service Manual
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P/NO : AFN75994442
FEBRUARY, 2014
3D Blu-ray
TM
/ DVD
Home Theater System
SERVICE MANUAL
MODEL:
BH5140S
(BH5140S, S54S1-S, S54T1-W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Website http://biz.lgservice.com
Internal Use Only
MODEL: BH5140S (BH5140S, S54S1-S, S54T1-W)
SERVICE MANUAL
2
Table of Contents
Section 1 Summary
3
Home Theater System
1
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
7
Firmware Update Guide
8
Update Firmware
9
Network Software Update
11
Specifications
13
Section 2 Electrical
16
Digital Display & Media Training Master
17
Distorted Picture
17
No Picture
22
Picture Color
27
Noise/Audio Problems
29
Miscellaneous
32
Bd-Hts
41
One Point Repair Guide
42
No Power Problem
42
No Booting When You Turn the Unit On, no Message or "Please Wait"On Front Panel
44
Wired Network Connection Error
53
Bad Hdmi Video / Audio Output
54
No Speaker Output
55
Electrical Troubleshooting Guide
56
System Power Supply on Smps Board
56
Amp Power Supply on Smps Board
57
Power Supply on Main Board
58
System Part
59
No Audio Output
60
No Hdmi Output
62
Waveforms
63
System Part - 1
63
System Part - 2 (System Memory)
64
Audio Part - 1 (S/Pdif)
65
Audio Part - 2 (I2S)
66
Hdmi Part
67
Wiring Diagram
68
Block Diagram
69
Circuit Diagrams
70
Smps - Power Circuit Diagram
70
Main - Micom Circuit Diagram
71
Main - Power Circuit Diagram
72
Main - Cpu Circuit Diagram
73
Main - Memory Circuit Diagram
74
Main - Loader Circuit Diagram
75
Main - Adc/ dir Circuit Diagram
76
Main - I/O Circuit Diagram
77
Amp - Pwm Circuit Diagram
78
Amp - Amp Circuit Diagram
79
Jack Circuit Diagram (Optional Part)
81
Front Circuit Diagram
82
Circuit Voltage Chart
83
Printed Circuit Board Diagrams
84
Smps P. C. Board
84
Main P. C. Board
85
Amp P.C.board
86
Jack P. C. Board (Optional Part)
87
Front P. C. Board
88
Section 3 Cabinet & Main Chassis
90
Exploded Views
92
Cabinet and Main Frame Section
92
Deck Mechanism Section
93
Packing Accessory Section
94
Speaker Section
95
Front/ Center/ Rear Speaker
95
Passive Subwoofer
96
Section 4 Mt8560 F/E Loader Part
98
Ld Check Guide
99
Purpose
99
Ld Check Procedure
99
How to Use the Sa Reset Function
100
Purpose
100
Required Sa Reset
100
Sa Reset Procedure
100
Major IC Internal Block Diagram and Pin Description
102
Ic501 (Mt8560)
102
Ic701 (Tpic2050): 9Ch Motor Drive with 3 Beam Laser Diode Driver
105
Pick-Up Connector Terminal Pin Assignments
107
Block Diagram
108
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LG S54T1-W Specifications
General
Brand
LG
Model
S54T1-W
Category
Home Theater System
Language
English
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