MODEL 47LM760S/760T 47LM760S/760T-ZB
SERVICE MANUAL
LED LCD TV
47LM761S/761T 47LM761S/761T-ZA 47LM765S/765T 47LM765S/765T-ZD
CONTENTS
Only for training and service purposes
Copyright
LG Electronics. Inc. All rights reserved
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Before returning the receiver to the customer
Leakage Current Cold CheckAntenna Cold Check
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
2. Requirement for Test
Specification
Symbolrate
4.0Msymbols/s to 7.2Msymbols/s
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
ADJUSTMENT INSTRUCTION
3. Automatic Adjustment
1. Application Range
2. Designation
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
3.3. LAN
3.7. WIFI MAC ADDRESS CHECK
3.5. Model name & Serial number Download
3.6. CI+ Key checking method
3.5.1. Model name & Serial number D/L
4. Manual Adjustment
4.1.1. Overview
4.1.2. Equipment
4.1.3. Download method
4.2. White Balance Adjustment
4.2.4. Adj. Command Protocol
4.2.1. Overview
4.2.2. Equipment
4.5. Magic Motion Remote control test
4.3. EYE-Q function check
4.4. Local Dimming Function Check
4.2.7. LED White balance table
4.7. Wi-Fi Test
4.6. 3D function test
4.8. LNB voltage and 22KHz tone check
4.9. Option selection per country
5. Audio
6. USB S/W DownloadService only
4.12. GND and Internal Pressure check
BLOCK DIAGRAM
Side
Rear
HDMI
EXPLODED VIEW
EAX6430790* LD22* / LC22 EAX6443420* LT22* / LJ22* / LA22* / LB22
NVRAM
X-TAL
JTAG 10K
Only for training and service purposes
PLACE AT JACK SIDE
Place at JACK SIDE
PLACE AT JACK SIDE
SMD Gaskit
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
PLACE AT JACK SIDE
PLACE AT MAIN SOC SIDE
PLACE AT IC6000
Only for training and service purposes
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
IC701 H5TQ2G63BFR-PBC
Copyright 2012 LG Electronics. Inc. All rights reserved
Only for training and service purposes
LGE Internal Use Only
FROM LIPS & POWER B/D
PowerDET
PANELPOWER
On-semi
Renesas MICOM
For Debug
MICOM MODEL OPTION
Eye Sensor Option
Only for training and service purposes
HDMI1
UI HDMI3
HDMI4
Only for training and service purposes
RGB/ PC AUDIO/ SPDIF
SPDIF OUT
PC AUDIO
Only for training and service purposes
ESD for MTK
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
Only for training and service purposes
RS232C
CVBS 1 PHONE JACK
COMPONENT 1 PHONE JACK
IR & KEY
Zener Diode is
close to wafer
Only for training and service purposes
USBWIFI
+5VUSB FOR USB1
USB1
USB2 MAX 1.5A
Only for training and service purposes
Full Scart18 Pin Gender
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
ZigBeeRadio Pulse MREMOTE OPTION
ALL MREMOTE OPTION
Only for training and service purposes
AR4800
Ethernet Block
Only for training and service purposes
ESD for MTK
ESD for LG1152
Only for training and service purposes
IC5800
STA380BW
GP4MT5369
Only for training and service purposes
SCART AUDIO MUTE
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
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
Copyright 2012 LG Electronics. Inc. All rights reserved
T/C/S & H/NIM & T2/C TUNEREU & CHINA
Only for training and service purposes
Vout=0.6*1+R1/R2
TU6500
OptionLNB
Only for training and service purposes
DVB-S2 LNB Part Allegro
DCDCGND and AGND are connected
AUDIO OUT JACK OPTCOMMEREXTAMP COMMEREXTAMPJACK
FOR COMMERCIAL 12V OUT RS-232C 9 PIN OPTCOMMEREXT12V
FOR COMMERCIAL AUDIO OUT OPTCOMMEREXTAMP
Only for training and service purposes
LVDS
Only for training and service purposes
51Pin LVDS OUTPUT Connector 41Pin LVDS OUTPUT Connector
Copyright 2012 LG Electronics. Inc. All rights reserved
LOCAL DIMMING
Only for training and service purposes
AR7600
1/16W
POWER BLOCK
THIS IS REVERSE PATTERN
LEVEL SHIFTER BLOCK
Only for training and service purposes
Don’t Connect Power At VDDI
eMMC I/F
Only for training and service purposes
HYNIXEMMC2GB
Only for training and service purposes
Place Near Micom
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
Page
Applicable Model XXLM760S-ZB
Only for training and service purposes
2012 LED/LCD TV Engineering guide
Copyright 2012 LG Electronics. Inc. All rights reserved
CONTENT
New features Main PCBs Block Diagrams, IIC Map
Instruction of new sub ass’ys How to use tool Download
Adjust way of new features widevine… Repair guide
EPI Interface
EPIEmbedded Point-Point Interface Features
Merits
EPI Interface mini-LVDS vs. EPI
HF mini-LVDS TCON
Comparison
What to change
EPI Interface mini-LVDS vs. EPI
HF mini-LVDS
Main PCB for Broadband
WIFI
Only for training and service purposes
xxLM760S-ZB
MTK5369 Block Diagram LM76
Power load
Side
Rear
Jack Interface
Only for training and service purposes
Main SoC MTK
Full Scart18 Pin Gender
GP4 Backend block diagram EPI & T-con
Only for training and service purposes
R 47옴
Copyright 2012 LG Electronics. Inc. All rights reserved
GP4 Backend block diagram EPI & T-Con
EPI CH1/2/3
EPI CH4/5/6
Only for training and service purposes
GP4 Backend block diagram LVDS Tx & Local Dimming
LVDS Tx Block
Only for training and service purposes
Dual-link LVDS Output
Interconnection
PCBs
Cables
xxLM760S-ZA
Circuit Block Diagram
Ass’y Picture Pin Configuration
2012Y IR + Soft touch PCB Pinmap
KEY1, KEY2 Voltage
2012Y IR + Soft Touch LED Lighting Scenario
Power LED Scenario
Spec 내용
Manual of Touch Sensitivity
Introductions of GP4 Sensor Touch IC
Touch Key Threshold Level Ta = 25ºC
Addr Value
Touch EEPROM Register change with USB port
Introductions of GP4 Sensor Touch IC
Introductions of 12Y RF ass’y + Magic Remote control
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
1. System
Pairing Information Transmission Send to TV after Paired
Pairing Information Transmission Sequence
Motion Data Transmission
power
power
mute
home
3. M4 Block Diagram
AA x 2 Battery
Power Management
Connector
4. Function list
주요 Item
Manufacturer
Function
Method
5. RF Pairing / Un-pairing Method
Description
Introductions of 12Y WIFI built in ass’y
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
WIFI Built in ass’y featureLGIT
Block diagram
Pin map
WIFI built in feature
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
LGE Internal Use Only
12Y Widevine & HDCP 2.0 & NETFLX
1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM
Only for training and service purposes
Copyright 2012 LG Electronics. Inc. All rights reserved
1. Widevine?
2. HDCP 2.0 & NETFLIX?
Netflix
Why HDCP2.0?
HDCP
3. DTCP?
4. Changed BOM
As-Was
Current
Only for training and service purposes
Only for training and service purposes
4. Changed BOM
Copyright 2012 LG Electronics. Inc. All rights reserved
LGE Internal Use Only
Contents of LCD TV Standard Repair Process
Contents of LCD TV Standard Repair Process Detail Technical Manual
Error symptom
Content
Page
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
Replace T-con Board or module And Adjust VCOM
Check various voltages of Power Board
Only for training and service purposes
Standard Repair Process
date
Check
Check RF Signal level
S/W Version
Check RF Signal level
Check S/W Version
Color error?
Color error?
Color error?
A10/ A11
External device screen error-Color error
Vertical/Horizontal bar, residual image, light spot
Replace Main B/D adjust VCOM
External Input error Component error RGB error HDMI DVI
Check Power LED
Power LED Y On?
Check Power On ‘”High”
Measure voltage of each output of Power B/D
Error?
Check Power Off Mode
If Power Off mode is not displayed Check Power B/D voltage
Power off List
of Power Board
Only for training and service purposes
Standard Repair Process
date
In case of External Input signal error Check and fix external device
Standard Repair Process
date
Check audio B+ Voltage
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
Power B/D don’t have problem
Recognition error
Recognition error
Only for training and service purposes
Standard Repair Process
Identify nose type
F. Exterior defect
Adjust VCOM
LCD TV
Contents of LCD TV Standard Repair Process Detail Technical Manual
Error symptom
Content
Page
Standard Repair Process Detail Technical Manual
ALL MODELS
24 Pin Power Board ↔ Main Board
Standard Repair Process Detail Technical Manual
Edge LED
SMAW200-H24S YEONHO
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
date
1. Checking method for remote controller for adjustment
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
date
ALL MODELS
Standard Repair Process Detail Technical Manual
Checking method
Only for training and service purposes
Standard Repair Process Detail Technical Manual
date
date
Appendix Exchange T-Con Board
Abnormal Power Section
Abnormal Power Section
Fuse Open, Abnormal power section
Only for training and service purposes
Appendix Exchange PSULED driver
Only for training and service purposes
No Light
Dim Light
Appendix Exchange the Module
Un-repairable Cases In this case please exchange the module
Only for training and service purposes
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
Standard Repair Process Detail Technical Manual
date
date
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
Edge LED Edge LED
Check “power on” pin is high
Standard Repair Process Detail Technical Manual
Edge LED Edge LED
SMAW200-H24S YEONHO
B. Power error Off when on, off whiling viewing
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
Only for training and service purposes
Standard Repair Process Detail Technical Manual
ALL MODELS
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