LED LCD TV
MODEL 32LM640S/640T
32LM640S/640T-ZA
SERVICE MANUAL
LG Electronics. Inc. All rights reserved
CONTENTS
Only for training and service purposes
Copyright
Leakage Current Cold CheckAntenna Cold Check
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Before returning the receiver to the customer
Electrostatically Sensitive ES Devices
SERVICING PRECAUTIONS
Removal
IC Remove/Replacement
Replacement
Small-Signal Discrete Transistor Removal/Replacement
2. Requirement for Test
SPECIFICATION
4. Model General Specification
1. Application range
symbolrate
Specification
Symbolrate
4.0Msymbols/s to 7.2Msymbols/s
6. RGB input PC
5. Component Video Input Y, Cb/Pb, Cr/Pr
7.2. PC mode
7. HDMI Input 7.1. DTV mode
2. Designation
ADJUSTMENT INSTRUCTION
3. Automatic Adjustment
1. Application Range
3.3. LAN
3.2. MAC address D/L, CI+ key D/L, Widevine key D/L, ESN D/L
3.4. LAN PORT INSPECTIONPING TEST
SET PC
3.5.1. Model name & Serial number D/L
3.7. WIFI MAC ADDRESS CHECK
3.5. Model name & Serial number Download
3.6. CI+ Key checking method
4.1.3. Download method
4. Manual Adjustment
4.1.1. Overview
4.1.2. Equipment
4.2.2. Equipment
4.2. White Balance Adjustment
4.2.4. Adj. Command Protocol
4.2.1. Overview
4.2.7. LED White balance table
4.5. Magic Motion Remote control test
4.3. EYE-Q function check
4.4. Local Dimming Function Check
4.9. Option selection per country
4.7. Wi-Fi Test
4.6. 3D function test
4.8. LNB voltage and 22KHz tone check
6. USB S/W DownloadService only
5. Audio
4.12. GND and Internal Pressure check
HDMI
BLOCK DIAGRAM
Side
Rear
IMPORTANT SAFETY NOTICE
EXPLODED VIEW
JTAG 10K
EAX6430790* LD22* / LC22 EAX6443420* LT22* / LJ22* / LA22* / LB22
NVRAM
X-TAL
PLACE AT JACK SIDE
Only for training and service purposes
PLACE AT JACK SIDE
Place at JACK SIDE
LGE Internal Use Only
SMD Gaskit
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
Only for training and service purposes
PLACE AT JACK SIDE
PLACE AT MAIN SOC SIDE
PLACE AT IC6000
IC701 H5TQ2G63BFR-PBC
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
On-semi
FROM LIPS & POWER B/D
PowerDET
PANELPOWER
Eye Sensor Option
Renesas MICOM
For Debug
MICOM MODEL OPTION
HDMI4
Only for training and service purposes
HDMI1
UI HDMI3
PC AUDIO
Only for training and service purposes
RGB/ PC AUDIO/ SPDIF
SPDIF OUT
LGE Internal Use Only
Only for training and service purposes
ESD for MTK
Copyright 2012 LG Electronics. Inc. All rights reserved
COMPONENT 1 PHONE JACK
Only for training and service purposes
RS232C
CVBS 1 PHONE JACK
Only for training and service purposes
IR & KEY
Zener Diode is
close to wafer
USB2 MAX 1.5A
USBWIFI
+5VUSB FOR USB1
USB1
LGE Internal Use Only
Only for training and service purposes
Full Scart18 Pin Gender
Copyright 2012 LG Electronics. Inc. All rights reserved
AR4800
ZigBeeRadio Pulse MREMOTE OPTION
ALL MREMOTE OPTION
Only for training and service purposes
ESD for LG1152
Ethernet Block
Only for training and service purposes
ESD for MTK
GP4MT5369
Only for training and service purposes
IC5800
STA380BW
LGE Internal Use Only
Only for training and service purposes
SCART AUDIO MUTE
Copyright 2012 LG Electronics. Inc. All rights reserved
Copyright 2012 LG Electronics. Inc. All rights reserved
EARPHONE AMP
Only for training and service purposes
HEADPHONE AMP
Copyright 2012 LG Electronics. Inc. All rights reserved
Option FOR MTK
Option FOR LG1152
Only for training and service purposes
TU6500
T/C/S & H/NIM & T2/C TUNEREU & CHINA
Only for training and service purposes
Vout=0.6*1+R1/R2
DCDCGND and AGND are connected
OptionLNB
Only for training and service purposes
DVB-S2 LNB Part Allegro
Only for training and service purposes
AUDIO OUT JACK OPTCOMMEREXTAMP COMMEREXTAMPJACK
FOR COMMERCIAL 12V OUT RS-232C 9 PIN OPTCOMMEREXT12V
FOR COMMERCIAL AUDIO OUT OPTCOMMEREXTAMP
Copyright 2012 LG Electronics. Inc. All rights reserved
LVDS
Only for training and service purposes
51Pin LVDS OUTPUT Connector 41Pin LVDS OUTPUT Connector
1/16W
LOCAL DIMMING
Only for training and service purposes
AR7600
Only for training and service purposes
POWER BLOCK
THIS IS REVERSE PATTERN
LEVEL SHIFTER BLOCK
HYNIXEMMC2GB
Don’t Connect Power At VDDI
eMMC I/F
Only for training and service purposes
LGE Internal Use Only
Only for training and service purposes
Place Near Micom
Copyright 2012 LG Electronics. Inc. All rights reserved
Page
Copyright 2012 LG Electronics. Inc. All rights reserved
Applicable Model XXLM760S-ZB
Only for training and service purposes
2012 LED/LCD TV Engineering guide
Adjust way of new features widevine… Repair guide
CONTENT
New features Main PCBs Block Diagrams, IIC Map
Instruction of new sub ass’ys How to use tool Download
EPIEmbedded Point-Point Interface Features
EPI Interface
Merits
What to change
EPI Interface mini-LVDS vs. EPI
HF mini-LVDS TCON
Comparison
HF mini-LVDS
EPI Interface mini-LVDS vs. EPI
xxLM760S-ZB
Main PCB for Broadband
WIFI
Only for training and service purposes
Rear
MTK5369 Block Diagram LM76
Power load
Side
Full Scart18 Pin Gender
Jack Interface
Only for training and service purposes
Main SoC MTK
Copyright 2012 LG Electronics. Inc. All rights reserved
GP4 Backend block diagram EPI & T-con
Only for training and service purposes
R 47옴
Only for training and service purposes
GP4 Backend block diagram EPI & T-Con
EPI CH1/2/3
EPI CH4/5/6
Dual-link LVDS Output
GP4 Backend block diagram LVDS Tx & Local Dimming
LVDS Tx Block
Only for training and service purposes
xxLM760S-ZA
Interconnection
PCBs
Cables
KEY1, KEY2 Voltage
Circuit Block Diagram
Ass’y Picture Pin Configuration
2012Y IR + Soft touch PCB Pinmap
Power LED Scenario
2012Y IR + Soft Touch LED Lighting Scenario
Spec 내용
Introductions of GP4 Sensor Touch IC
Manual of Touch Sensitivity
Touch Key Threshold Level Ta = 25ºC
Touch EEPROM Register change with USB port
Addr Value
Introductions of GP4 Sensor Touch IC
LGE Internal Use Only
Introductions of 12Y RF ass’y + Magic Remote control
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
Motion Data Transmission
1. System
Pairing Information Transmission Send to TV after Paired
Pairing Information Transmission Sequence
home
power
power
mute
Connector
3. M4 Block Diagram
AA x 2 Battery
Power Management
Function
4. Function list
주요 Item
Manufacturer
5. RF Pairing / Un-pairing Method
Method
Description
LGE Internal Use Only
Introductions of 12Y WIFI built in ass’y
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
WIFI built in feature
WIFI Built in ass’y featureLGIT
Block diagram
Pin map
LGE Internal Use Only
WIFI Built in Block-diagramArcadyan
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
WIFI Built in ass’y Specification
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
Copyright 2012 LG Electronics. Inc. All rights reserved
12Y Widevine & HDCP 2.0 & NETFLX
1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM
Only for training and service purposes
1. Widevine?
HDCP
2. HDCP 2.0 & NETFLIX?
Netflix
Why HDCP2.0?
3. DTCP?
Only for training and service purposes
4. Changed BOM
As-Was
Current
LGE Internal Use Only
Only for training and service purposes
4. Changed BOM
Copyright 2012 LG Electronics. Inc. All rights reserved
Contents of LCD TV Standard Repair Process
Page
Contents of LCD TV Standard Repair Process Detail Technical Manual
Error symptom
Content
Replace T-con Board or module And Adjust VCOM
Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable
A2 Check Power Board 24v output
Check Power Board 12v,3.5v etc
date
Check various voltages of Power Board
Only for training and service purposes
Standard Repair Process
Check RF Signal level
Check
S/W Version
Check S/W Version
Check RF Signal level
A10/ A11
Color error?
Color error?
Color error?
External Input error Component error RGB error HDMI DVI
External device screen error-Color error
Vertical/Horizontal bar, residual image, light spot
Replace Main B/D adjust VCOM
Measure voltage of each output of Power B/D
Check Power LED
Power LED Y On?
Check Power On ‘”High”
Power off List
Error?
Check Power Off Mode
If Power Off mode is not displayed Check Power B/D voltage
date
of Power Board
Only for training and service purposes
Standard Repair Process
Check audio B+ Voltage
In case of External Input signal error Check and fix external device
Standard Repair Process
date
Power B/D don’t have problem
Check & Repair Cable connection Connector solder
Check IR Output signal
Check 3.5v on Power B/D Replace Power B/D or Replace Main B/D
Standard Repair Process
Recognition error
Recognition error
Only for training and service purposes
Identify nose type
Adjust VCOM
F. Exterior defect
LCD TV
Page
Contents of LCD TV Standard Repair Process Detail Technical Manual
Error symptom
Content
ALL MODELS
Standard Repair Process Detail Technical Manual
SMAW200-H24S YEONHO
24 Pin Power Board ↔ Main Board
Standard Repair Process Detail Technical Manual
Edge LED
date
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
ALL MODELS
1. Checking method for remote controller for adjustment
Only for training and service purposes
Standard Repair Process Detail Technical Manual
date
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
Standard Repair Process Detail Technical Manual
ALL MODELS
Checking method
date
Only for training and service purposes
Standard Repair Process Detail Technical Manual
date
Appendix Exchange T-Con Board
Only for training and service purposes
Abnormal Power Section
Abnormal Power Section
Fuse Open, Abnormal power section
Dim Light
Appendix Exchange PSULED driver
Only for training and service purposes
No Light
Copyright 2012 LG Electronics. Inc. All rights reserved
Appendix Exchange the Module
Un-repairable Cases In this case please exchange the module
Only for training and service purposes
Un-repairable Cases In this case please exchange the module
Appendix Exchange the Module
date
Only for training and service purposes
Standard Repair Process Detail Technical Manual
date
Edge LED Edge LED
When st-by, only 3.5V is normally on
Standard Repair Process Detail Technical Manual
For ’10 models, there is no voltage out for st-by purpose
SMAW200-H24S YEONHO
Check “power on” pin is high
Standard Repair Process Detail Technical Manual
Edge LED Edge LED
ALL MODELS
B. Power error Off when on, off whiling viewing
Only for training and service purposes
Standard Repair Process Detail Technical Manual
date
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
ALL MODELS
Standard Repair Process Detail Technical Manual
ALL MODELS
Standard Repair Process Detail Technical Manual
LCD module change T-Con board change
Standard Repair Process Detail Technical Manual