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