CHASSIS LD21C
SERVICE MANUAL
READ THE SAFETY PRECAUTIONS IN THIS MANUAL
http//aic.lgservice.com
CONTENTS
SAFETY PRECAUTIONS
SERVICING PRECAUTIONS
SPECIFICATION
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
SERVICING PRECAUTIONS
Electrostatically Sensitive ES Devices
IC Remove/Replacement
Replacement
Small-Signal Discrete Transistor Removal/Replacement
Removal
SPECIFICATION
4. Model General Specification
1. Application range
3. Test method
Specification
Symbolrate 4.0Msymbols/s to 7.2Msymbols/s
symbolrate
DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s
5.1. Component Input Y, CB/PB, CR/PR
5. Video resolutions 2D
5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported
5.3. HDMI InputPC/DTV
PCDVI
ADJUSTMENT INSTRUCTION
Boot file Download
1. Application Range
2. Designation
3.1. ADC Process
3.3. EDID data
3.2. EDID Download
7. ADC Calibration
4.1. Adjustment Preparation
4. Total Assembly line process
3.4 Function Check
4.5. Outgoing condition Configuration
4.2. EYE-Q function check
4.3. 3D function test
4.4. IR emitter inspection
6.1. Signal Table
5. HI-POT Test
6. Model name & Serial number D/L
5.1. HI-POT auto-check preparation
7. MAC Address & CI+ key download
7.1 MAC Address
7.2 LAN Inspection
7.3. LAN PORT INSPECTIONPING TEST
Rear
Side
LG2111 A
IC101
Applied Model **LM580T, **560T, **LS350T, **CS460T
Rear
Side
LG2111 A
560S, **LS350S, **CS460S
Rear
Side
LG2111 A
EXPLODED VIEW
FROM LIPS & POWER B/D
PowerDET
+3.3VNormal
+1.5VDDR
LVDS for large inch
51Pin LVDS Connector For FHD 60Hz
30Pin LVDS Connector
Only for training and service purposes
Only for training and service purposes
S7LR2DIVXMS10
GP4LS7LR22011/06/03 DDR25612
Copyright 2012 LG Electronics. Inc. All rights reserved
Serial Flash for SPI boot
Only for training and service purposes
GP4LS7LR2
2011/06/03
CI Region
Option name of this page CISLOT because of Hong Kong
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
H/W option ETHERNET
GP4LS7LR22011/06/14 ETHERNET21
Only for training and service purposes
ETHERNET
IR/LED and control for on.y ’12 sub without IR-OUT
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
GP4RGLOBALTUNERBLOCK
Only for training and service purposes
TU2602TU2603 TDSS-G101D TDSN-G301D
TU2601
DVB-S2 LNB Part Allegro
OptionLNB
GP4LS7LR22011/11/02 DVBS27
Only for training and service purposes
AUDIO AMPSTA380BWE
Only for training and service purposes
GP4LS7LR22011/11/16 AMPSTA380BWE
Copyright 2012 LG Electronics. Inc. All rights reserved
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
NAND FLASH MEMORY
Normal Power
Only for training and service purposes
VDDC
Normal
USB SIDE
USB1DIODES
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
HDMI2EANON SIDE HDMI
Only for training and service purposes
HDMI1
For CEC
Full Scart
Only for training and service purposes
COMPONENT
SCART AUDIO OUT
RS-232C 4PIN
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
MSTART DEBUG4PIN
Only for training and service purposes
GP4LS7LR2
2011/09/05
Page
Contents of LCD TV Standard Repair Process
Contents of LCD TV Standard Repair Process Detail Technical Manual
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Error symptom
Content
A. Video error
LCD TV
Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable
A2 Check Power Board 24v output
A. Video error
voltages of Power
Only for training and service purposes
LCD TV
A. Video error
By using Digital signal level meter By using Diagnostics menu on OSD
Menu→ Set up→ Support → Signal Test Signal strength Normal over 50%
Signal Quality Normal over 50%
LCD TV
A. Video error
→ Set-Top-Box, Different maker TV etc
A8/ A9
A. Video error
LCD TV
Check color by input -External Input COMPONENT -RGB
External device screen error-Color error
A. Video error
Vertical/Horizontal bar, residual image, light spot
LCD TV
B. Power error
Check Power LED
Check Power On ‘”High”
Measure voltage of each output of Power B/D
B. Power error
Check Power Off Mode
If Power Off mode is not displayed Check Power B/D voltage
POWEROFFABNORMAL1
C. Audio error
24V of Power
LCD TV
Check user menu Speaker off
C. Audio error
In case of External Input signal error Check and fix external device
LCD TV
Check audio B+ Voltage
D. Function error
1. Remote controlR/C operating error
LCD TV
Check & Repair
D. Function error
Check input signal
Y Check technical Signal information input? - Fix information
Recognition error
LCD TV
E. Noise
Identify nose type
F. Exterior defect
LCD TV