LG 49LF640 Series LED TV Manuals

Manuals and User Guides for LG 49LF640 Series LED TV. We have 1 LG 49LF640 Series LED TV manual available for free PDF download: Service Manual

LG 49LF640 Series Service Manual

LG 49LF640 Series Service Manual (93 pages)

LED TV CHASSIS LT51H

Brand: LG | Category: LED TV | Size: 7.32 MB

Table of Contents

Contents
2
Safety Precautions
3
Leakage Current Cold Check (Antenna Cold Check)
3
Leakage Current Hot Check
3
Servicing Precautions
4
Electrostatically Sensitive (ES) Devices
4
General Soldering Guidelines
4
IC Remove/Replacement
5
"Small-Signal" Discrete Transistor Removal/Replacement
5
Diode Removal/Replacement
5
Fuse and Conventional Resistor Removal/Replacement
5
Specification
6
Application Range
6
Test Condition
6
Test Method
6
External Input Support Format
7
HDMI: EDID Data
8
3D Mode
9
RF Input
9
HDMI Input
9
Component 3D Input
12
USB Input (3D)
13
DLNA Input (3D)
13
Adjustment Instruction
14
PCB Assembly Adjustment
14
Set Assembly Adjustment
14
Communication Port Connection
14
LAN Port Inspectin (Ping Test)
15
ADC Adjust
15
Factory Adjustment
16
EDID (the Extended Display Identification Data) Download
16
DDC (Display Data Channel) Download
16
Adjustment Color Temperature (White Balance)
17
Reference (White Balance Adj. Coordinate and Color Temperature)
17
Magic Motion Remote Controller Check
18
3D Pattern Test
18
GND and HI-POT Testing
19
Local Dimming Function Check
19
Intelligent Sensor Inspection
19
Default Service Option
20
USB Download
20
ADC-Set
20
White Balance. Value
20
Block Diagram
21
Exploded View
32
Electrical Diagrams
33
Troubleshooting
57
Contents of Standard Repair Process
58
Video Error
59
No Video/ Normal Audio
59
No Video/ no Audio
60
Picture Problem, Picture Broken/ Freezing
61
Color Error
62
Vertical/Horizontal Bar, Residual Image, Light Spot
63
External Device Screen Error-Color Error
63
Power Error
64
No Power
64
Off When On, off While Viewing, Power Auto On/Off
65
Audio Error
66
No Audio/ Normal Video
66
Wrecked Audio/Discontinuation/Noise
67
Function Error
68
Normal/Motion Remote Controller Operating Error
68
External Device Recognition Error
69
Exterior Defect
70
Circuit Noise, Mechanical Noise
71
Contents of Standard Repair Process Detail Technical Manual
72
Video Error_No Video/Normal Audio
74
Video Error_Video Error, Video Lag/Stop
76
Video Error_Vertical/Horizontal Bar, Residual
78
Video Error_Color Error
80
Exchange T-Con Board
81
Exchange LED Driver Board (PSU)
83
Exchange Module Itself
84
Power Error _No Power
86
Power Error_Off When On, off Whiling Viewing
88
Audio Error_No Audio/Normal Video
89
Function Error_ no Response in Remote Controller
91
Normal Remote Controller Operation Checking Method
91

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