LG 79UB989Y Manuals

Manuals and User Guides for LG 79UB989Y. We have 1 LG 79UB989Y manual available for free PDF download: Service Manual

LG 79UB989Y Service Manual (112 pages)

Brand: LG | Category: LED TV | Size: 12.68 MB

Contents
2
Safety Precautions
3
Important Safety Notice
3
General Guidance
3
Leakage Current Hot Check
3
Servicing Precautions
4
General Servicing Precautions
4
Electrostatically Sensitive (ES) Devices
4
General Soldering Guidelines
4
IC Remove/Replacement
5
"Small-Signal" Discrete Transistor
5
Power Output, Transistor Device
5
Diode Removal/Replacement
5
Specification
6
Application Range
6
Requirement for Test
6
Model General Specification
6
External Input Support Format
7
Component
7
Hdmi : Edid Data
8
DTV Mode
8
PC Mode
9
3D Mode - DTV/HDMI/USB
10
RF Input
10
HDMI Input
10
HDMI 1.4B (3D Supported Mode Automatically)
11
HDMI-PC Input (3D) (3D Supported Mode Manually)
12
Component Input (3D) (3D Supported Mode Manually)
12
USB, DLNA - Movie (3D)
13
Miracast, Widi (3D Supported Mode Manually)
13
Adjustment Instruction
14
Designation
14
Automatic Adjustment
14
LAN Inspection
15
Model Name & Serial Number Download
15
LAN Inspection Solution
15
Lan Port Inspection(Ping Test)
15
Manual Adjustment
16
Wifi Mac Address Check
16
Edid Data
16
Camera Function Inspection
18
White Balance Adjustment
18
Equipment Connection MAP
18
EDGE & IOL LED White Balance Table
19
Local Dimming Function Check
20
Magic Motion Remote Control Test
20
Color Sensor Function Inspection
20
3D Function Test
20
HDMI ARC Function Inspection
21
UHD 4K Test
21
Tool Option Selection
21
GND and Internal Pressure Check
22
USB S/W Download
22
Audio
22
Block Diagram
23
External
23
Internal
24
Exploded View
25
System Configuration
26
LCD TV Repair Guide
69
Contents of LCD TV Standard Repair Process
70
Video Error
71
No Video/ Normal Audio
71
No Video/ no Audio
72
Picture Broken/ Freezing
73
Color Error
74
Vertical/Horizontal Bar, Residual Image, Light Spot
75
External Device Screen Error-Color Error
75
No Power
76
Off When On, off While Viewing, Power Auto On/Off
77
Audio Error
78
No Audio/ Normal Video
78
Wrecked Audio/ Discontinuation/Noise
79
Function Error
80
Remote Control & Local Switch Checking
80
MR13 Operating Checking
81
Mr13(Magic Remocon) Operating Error
81
Wifi Operating Checking
82
Camera Operating Checking
83
External Device Recognition Error
84
Noise
85
Circuit Noise, Mechanical Noise
85
Exterior Defect
86
Contents of LCD TV Standard Repair Process Detail Technical Manual
87
Check LCD Back Light with Naked Eye
89
Check White Balance Value
90
TUNER Input Signal Strength Checking Method
91
LCD-TV Version Checking Method
92
Checking Method for Remote Controller for Adjustment
92
TUNER Checking Part
93
LCD TV Connection Diagram
94
Check Link Cable (LVDS) Reconnection Condition
95
Adjustment Test Pattern - ADJ Key
96
Exchange Main Board
97
Exchange Power Board (PSU)
99
Check Front Power Indicator
102
Check Power Input Voltage and ST-BY 3.5V
103
POWER off MODE Checking Method
104
Checking Method in Menu When There Is no Audio
105
Checking Order When There Is no Audio
106
Remote Controller Operation Checking Method
107
Motion Remote Operation Checking Method
108
Wifi Operation Checking Method
109
Camera Operation Checking Method
110
Tool Option Changing Method
111

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LG 79UB989Y Service Manual (112 pages)

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