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READ THE SAFETY PRECAUTIONS IN THIS MANUAL
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SPECIFICATION
CONTENTS
SAFETY PRECAUTIONS
SERVICING PRECAUTIONS
IMPORTANT SAFETY NOTICE
SAFETY PRECAUTIONS
Electrostatically Sensitive ES Devices
SERVICING PRECAUTIONS
Removal
IC Remove/Replacement
Replacement
Small-Signal Discrete Transistor Removal/Replacement
3. Test method
SPECIFICATION
4. Model General Specification
1. Application range
RGB Input
Specification
Only for training and service purposes
Remarks
5.1. Component Input Y, CB/PB, CR/PR
5. Video resolutions 2D
5.2. RGB Input PC
PCDVI
5.3. HDMI InputPC/DTV
1. Application Range
ADJUSTMENT INSTRUCTION
Boot file Download
After downloading, have to adjust Tool Option again
3.2. Function Check
4. Total Assembly line process
4.1. Adjustment Preparation
3.1. ADC Process
Manual W/B process using adjust Remote control
4.4. EDID data
4.2. DDC EDID Write RGB 128Byte
4.3 DDC EDID Write HDMI 256Byte
4.6.2. HI-POT auto-check
4.5. Outgoing condition Configuration
4.6. HI-POT Test
4.6.1. HI-POT auto-check preparation
5.3. Method & notice
5.1. Signal Table
5. Model name & Serial number D/L
5.2. Comand Set
6. CI+ Key Download method
6.1. Download Procedure
CI+ Key Value
All rights reserved
BLOCK DIAGRAM
S7LR
Copyright
EXPLODED VIEW
2011 . 08
Only for training and service purposes
EMEA INTERACTIVE
GP4MSTAR
OLED
Step Up regulator 3 . 3V to 5VMAX 250mA
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
+3.3VNormal
FROM LIPS & POWER B/D
PowerDET
+1.5VDDR
NTP-7500L
IC501
LGE Internal Use Only
CONTROL IR & LED
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
Copyright 2012 LG Electronics. Inc. All rights reserved
Only for training and service purposes
51Pin LVDS Connector
30Pin LVDS Connector For HD 60HzNormal
HDMI2
Only for training and service purposes
HDMI1
For CEC
0 . 3 3 u F
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
Copyright 2012 LG Electronics. Inc. All rights reserved
RGB/SPDIF/PC/HP/USB
USBDIODES
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
Only for training and service purposes
S7LRDIVXMS10
EMEA INTERACTIVE
IC1300
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
SI2156DVB1INPUTH
Only for training and service purposes
P4RGLOBALTUNERBLOCK
SI2176ATSC1INPUTH
PILG1001 A2
IC1501
LGDT1001
Only for training and service purposes
LGE Internal Use Only
Full Scart/ Comp1
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
EXTSPK OUT
UART/I2C SWITCH
EXTSPK AMP
EXTSPKCONTROL/DEBUG
LGE Internal Use Only
EXTERNALPOWER OUT 5V/12V
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
Copyright 2012 LG Electronics. Inc. All rights reserved
CI Region
Option name of this page CI SLOT because of Hong Kong
Only for training and service purposes
LGE Internal Use Only
SMD GASKET
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
Page
1. Trouble Shooting
Contents of LCD TV Standard Repair Process
A2 Check Power Board 24V,12V,3.5V output
A. Video error
Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable
LCD TV
LCD TV
A. Video error
voltages of Power
Only for training and service purposes
Signal strength Normal over 30% Signal Quality Normal over 30%
A. Picture Problem
By using Digital signal level meter
By using Diagnostics menu on OSD Menu→Setup→Manual Tuning
※ Check
A. Video error
LCD TV
Check color by input -External Input COMPONENT -RGB
Vertical/Horizontal bar, residual image, light spot
Connect other external device and cable
External device screen error-Color error
A. Video error
Check Power On ‘”High”
B. Power error
Stand-By Red Operating white
Check Power LED
POWEROFFABNORMAL1
B. Power error
Check Power Off Starusinstart menu
If Power Off mode is not displayed Check Power B/D voltage
Check user menu Speaker off
C. Audio error
Power Board
LCD TV
Check audio B+ Voltage 20V or
C. Audio error
In case of External Input signal error Check and fix external device
LCD TV
Output signal
D. General Function Problem
1. Remote controlR/C operating error
Check & Repair Cable connection Connector solder
S/W Version
D. Function error
Check input signal
Y Check technical Signal information input? - Fix information
Identify nose type
E. Noise
LCD TV
LCD TV
F. Exterior defect
Standard Repair Process Detail Technical Manual
A. Video errorVideo error, video lag/stop
MENU -Æ red keycustomer support -Æ signal test -Æ select channel
When the signal is strong, use the attenuator -10dB, -15dB, -20dB etc
Version
1. Checking method for remote controller for adjustment
Press the IN-START with the remote controller for adjustment
ALL MODELS
Standard Repair Process Detail Technical Manual
A. Video errorColor error
You can view 6 types of patterns using the ADJ Key
Only for training and service purposes
Appendix Exchange T-Con Board
Appendix Exchange T-Con Board
No picture/Sound Ok A - 3/5
Appendix Exchange PSULED driver
No Light
Dim Light
Press damage
Appendix Exchange the Module
Un-repairable Cases In this case please exchange the module
Panel Mura, Light leakage
Un-repairable Cases In this case please exchange the module
Appendix Exchange the Module
Entry method
1. Press the IN-START button of the remote controller for adjustment
2. Check the entry into adjustment item
B. Power error Off when on, off whiling viewing
2. Select the AUDIO function of the Menu
C. Audio errorNo audio/Normal video
1. Press the MENU button on the remote controller
Checking method