LG 42LM620S Manuals

Manuals and User Guides for LG 42LM620S. We have 1 LG 42LM620S manual available for free PDF download: Service Manual

LG 42LM620S Service Manual

LG 42LM620S Service Manual (120 pages)

Brand: LG | Category: LCD TV | Size: 11.5 MB

Table of Contents

Service Manual
1
Table of Contents
2
Safety Precautions
3
Servicing Precautions
4
Specification
6
- RGB Input (PC)
  8
- Component Video Input
  8
- HDMI Input
  9
- DTV Mode
  9
- PC Mode
  9
- Automatic Adjustment
  10
- ADC Adjustment
  10
Adjustment Instruction
10
- Lan Port Inspection
  11
- LAN Inspection Solution
  11
- Lan
  11
- Model Name & Serial Number Download
  12
- Model Name & Serial Number D/L
  12
- CI+ Key Checking Method
  12
- Wifi Mac Address Check
  12
- Manual Adjustment
  13
- Download Method
  13
- Edid Data
  13
- Manual Adjustment. Method
  14
- White Balance Adjustment
  14
- Auto Adj. Method
  14
- Equipment Connection MAP
  14
- EYE-Q Function Check
  15
- Local Dimming Function Check
  15
- Magic Motion Remote Control Test
  15
- LED White Balance Table
  15
- 3D Function Test
  16
- Wi-Fi Test
  16
- LNB Voltage and 22Khz Tone Check
  16
- Option Selection Per Country
  16
- GND and Internal Pressure Check
  17
- Audio
  17
- USB S/W Download
  17
- Screw Specification and Application Situation
  18
Screw Assembly Working Guide
18
Block Diagram
19
Exploded View
20
- 2012 LED/LCD TV Engineering Guide
  51
- EPI Interface
  53
- Topology
  53
- EPI Interface (Mini-LVDS Vs. EPI)
  54
- Comparison
  54
- HF Mini-LVDS
  54
- EPI (Embedded Clock P-To-P Interface)
  54
- Main PCB for Broadband
  56
- MTK5369 Block Diagram( LM76 )
  57
- Jack Interface
  58
- GP4 Backend Block Diagram (EPI & T-Con)
  59
- GP4 Backend Block Diagram (LVDS Tx & Local Dimming)
  61
- Interconnection
  62
- Pcbs
  62
- Cables
  62
- KEY1, KEY2 Voltage
  63
- Pin Configuration
  63
- Circuit Block Diagram
  63
- 2012Y IR + Soft Touch PCB Pinmap
  63
- 2012Y IR + Soft Touch LED Lighting Scenario
  64
- Power LED Scenario
  64
- Introductions of GP4 Sensor (Touch IC)
  65
- Manual of Touch Sensitivity
  65
- Touch Key Threshold Level
  65
- Touch EEPROM Register Change with USB Port
  66
- Introductions of 12Y RF Ass’y + Magic Remote Control
  67
- System
  68
- Remote Buttons (M3 Vs. M4)
  69
- Mute Power
  69
- M4 Block Diagram
  70
- Function List
  71
- RF Pairing / Un-Pairing Method
  72
- Introductions of 12Y WIFI Built in Ass’y
  73
- WIFI Built in Ass’y Feature(LGIT)
  74
- WIFI Built in Feature
  74
- WIFI Built in Block-Diagram(Arcadyan)
  75
- WIFI Built in Ass’y Specification
  76
- 12Y Widevine & HDCP 2.0 & NETFLX
  77
- Changed BOM
  81
- Current
  81
- Contents of LCD TV Standard Repair Process
  83
- Video Error
  85
- No Video/ Normal Audio
  85
- No Video/ no Audio
  86
- Picture Problem
  87
- Picture Broken/ Freezing
  87
- Picture Problem (DVB-S/S2)
  88
- Tuning Fail, Picture Broken/ Freezing
  88
- Color Error
  89
- Vertical/Horizontal Bar, Residual Image, Light Spot
  90
- External Device Screen Error-Color Error
  90
- Power Error
  91
- No Power
  91
- Off When On, off While Viewing, Power Auto On/Off
  92
- Audio Error
  93
- No Audio/ Normal Video
  93
- Wrecked Audio/ Discontinuation/Noise
  94
- General Function Problem
  95
- Remote Control & Local Switch Checking
  95
- Function Error
  96
- External Device Recognition Error
  96
- Circuit Noise, Mechanical Noise
  97
- Noise
  97
- Exterior Defect
  98
- Contents of LCD TV Standard Repair Process Detail Technical Manual
  99
- Video Error_No Video/Normal Audio
  100
- Check White Balance Value
  100
- Video Error_No Video/ Audio
  101
- Power Board Voltage Measuring Method
  101
- TUNER Input Signal Strength Checking Method
  102
- LCD-TV Version Checking Method
  103
- TUNER Checking Part
  105
- Adjustment Test Pattern - ADJ Key
  106
- Exchange T-Con Board
  107
- Exchange PSU(LED Driver)
  109
- Exchange the Module
  110
- Un-Repairable Cases
  110
- Standard Repair Process Detail Technical Manual
  112
- Power Error _No Power
  112
- Check Front Display LED
  112
- Check Power Input Voltage and ST-BY 5V
  113
- Checking Method When Power Is on
  114
- POWER off MODE Checking Method
  115
- Checking Method in Menu When There Is no Audio
  116
- Voltage and Speaker Checking Method When There Is no Audio
  117
- Checking Order When There Is no Audio
  117
- Remote Controller Operation Checking Method
  118
- VCOM Adjustment
  119
- Sequence of the Vcom Adjustment
  119

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