LCD TV Repair Guide Handbook_140211_v1

LCD TelevisionRepair Guide Handbook

2

Woofer Speaker

Power Board

Main Board

Driver Board

T con Board

Local Key

IR WiFi

Board RF Board

General 1. ‘13 LCD TV layout structure Overview

3

Power LEDOn?

Y

N Y

N

Check Power cordwas inserted properly

Replace Power B/D

Measure voltage for each output of Power B/D

N

Y Replace Main B/D

Y

N

Replace Main B/D

N

Y

Replace Power B/D

N

Replace Power B/D

Y

- Stand-By: Red light or Turn Off - Power on Condition: Turn Off

※

inserted properly

OK?

OperationOK?

Voltage OK?(3.5V)

Voltage OK?(12V,3.5V)

Voltage OK?(3.3V)

Close

☞Page 6~7

☞Page 6~7

-DC Power on: Switch on the TV with local key or remote controller-AC Power on: Switch on the TV with power supply(outlet)

Measure voltage “Power On” line with Tester

“DC Power on”by pressing Power Key with Remote controller

Check Front Display LED light Status

☞Page 5

Check ST-BY 3.5VMeasure votage 3.5V pin with Tester

<Power Pin Voltage Spec>

OutputVoltageVariable

range3.5V

(ST-BY)3.325V~3.67

5V12V 11.4~12.6V24V 21.6V~27V

Repair Method by Symptoms 3-1. No Power Check(Flow Chart)

4

Check the ST-BY(3.5V) and Power on(3.3V)

24 Pin (Power Board ↔ Main Board)1 Power on(3.3V) 2 24V

3 24V 4 24V

5 GND 6 GND

7 GND 8 GND

9 ST-BY (3.5V) 10 ST-BY (3.5V)

11 ST-BY (3.5V) 12 ST-BY (3.5V)

13 GND 14 GND

15 GND 16 GND

17 12V 18 Inverter On/off

19 12V 20 Lamp : A-DimLED : N.C

21 12V 22 PWM Dim #1

23 N.C • Lamp SCANNING Model: PWM Dim #2

24 Error-out

Direct LEDPower Board

Edge LEDPower Board

<Check Power on (3.3V) and ST-BY(3.5V)> 1. Power Sequence : AC IN→ST-BY3.5V→P-ON→12V,24V→INV ON2. ST-BY3.5V: Power Board → Main Board Micom IC/Power LED /IR Voltage3. 24V: Power Board → Main Board Sound IC /LED Driver Voltage4. 12V: Power Board → Main Board /Module Voltage

The “LED” refers only to the type of lighting source used to illuminate the LCD pixels in the television1. Direct LED: Direct type term refers to televisions that use a full panel of LEDs to illuminate the pixels.2. Edge LED: Edge LED,means the LEDs that illuminate the pixels are located only on the edges of the set.

3.5V

3.3V

Repair Method by Symptoms 3-2. No Power Check(check method)

5

`13 Model LA Series 24 Pin (Power Board ↔ Main Board)

1 Power on(3.3V)

2 Inverter On/off(3.3V)

3 ST-BY(3.5V) 4 PWM Dim #1


7 GND 8 GND

9 24V 10 24V

11 GND 12 GND

13 12V 14 12V

15 12V 16 24V

17 GND 18 GND

19 GND 20 GND

21 GND 22 L/DIMO_VS

23 L/DIM0_MOSI 24 L/DIM0_SCLK18 Pin (Power Board ↔ Main Board)

1 Power on(3.3V) 2 Inverter On/off



7 GND 8 GND

9 24V 10 24V

11 GND 12 GND

13 12V 14 12V

15 12V 16 24V

17 GND 18 GND

<Check Power on (3.3V) and ST-BY(3.5V)>


Edge LEDPower Board

3.3V

3.5V

Repair Method by Symptoms 3-2. No Power Check(Check method)

6

Pin No. Items Description of service and functions

24 ERROR The Inverter or HV signals whether the Lamp Turn-on functions normally

23 NC Null terminals

22 P-DIM The CPU automatically adjusts the brightness, based on the wave pattern of elements communicated (for each picture mode)

20 A-DIM The CPU customizes the brightness of Lamp as to each different brightness of picture (a serial current wave)

18 INV ON/OFF Signals for Inverter, controlled by MICOM

17,19,21 12V Power Supply to Main Board/Module

15,16 GND 　

13,14 GND 　

11,12 3.5V ST-BY

9,10 3.5V ST-BY

7,8 GND 　

5,6 GND 　

2,3,4 24V Sound IC B+ Voltage

1 Power On A Voltage required to turn Multi Voltages ON, Input by MICOM(Voltage: 3.3V)

Repair Method by Symptoms 3-3. No Power Check(Power Pin Description)

7

Y

N

Y

N

Y

N

Replace module

Repair Power Board or parts

Check Power Board 24v output

Y Replace Inverter or module

N

Repair Power Board or parts

End

First of all, Check whether all of cables between board are inserted properly or not.(Main B/D↔ Power B/D, LVDS Cable, Speaker Cable, IR B/D Cable,,,)

Y

Replace Power Board

N End

Case1. No Picture with audio working conditionCase2. No Picture with audio not working condition

☞Page 10~12

☞Page 10~12

SoundWorkingproperly

Back light“On”

CheckVoltage

12V, 3.5V

VoltageOK?

Check Back Lightwhether “On ”or off with naked eye

Check Power Board 12V, 3.5V line

No Picture

Check Power Board 3.5V,12V,24 line

Check and replace MAIN B/D

VoltageOK?

Case 1

Case 2

No Picture with Sound not working conditon

<Power Pin Voltage Spec>

OutputVoltageVariable

range3.5V

(ST-BY)3.325V~3.67

5V12V 11.4~12.6V24V 21.6V~27V

Repair Method by Symptoms 4-1. No Picture Check(Flow Chart)

8

<LK Series>

<LW Series>

24 Pin (Power Board ↔ Main Board) - 공통

1 Power on(3.3V) 2 24V

3 24V 4 24V

5 GND 6 GND

7 GND 8 GND

9 ST-BY(3.5V) 10

ST-BY(3.5V)

11 ST-BY(3.5V) 12

ST-BY(3.5V)

13 GND 14

GND

15 GND 16

GND

17 12V 18

Inverter On/off

19 12V 20

A-Dim

21 12V 22

PWM Dim

23 N.C (only Lamp

SCANNING Model : PWM Dim #2)

24

Error-out

Screen (LK, LW)

ERRORP-DIMA-DIMINV-ONGNDGND3.5V3.5VGNDGND24V24V

NC12V12V12VGNDGND3.5V3.5VGNDGND24VON/OFF

Check the DC 24V, 12V, 3.5V

Repair Method by Symptoms 4-2. No Picture Check(Check Power Pin)

9

24 Pin (Power Board ↔ Main Board) - 공통

1 Power on(3.3V) 2 24V

3 24V 4 24V

5 GND 6 GND

7 GND 8 GND

9 ST-BY(3.5V) 10

ST-BY(3.5V)

11 ST-BY(3.5V) 12

ST-BY(3.5V)

13 GND 14

GND

15 GND 16

N.C(Only LPB : V-

sync)

17 12V 18

Inverter On/off

19 12V 20

N.C(LPB, Lamp : A-

dim)

21 12V 22

PWM Dim #1

23 N.C (only Lamp

SCANNING Model : PWM Dim #2)

24

Error-out

Screen (LM)<Check power On(3.3V) and DC 24V, 12V, 3.5V>Check the DC 24V, 12V, 3.5V Direct LED

Power Board

3.5V

24V

12V


10

<Check power input voltage and DC 24V, 12V, 3.5V>

24 Pin (Power Board ↔ Main Board) 1 Power on 2 Inverter On/off

3 3.5V 4 PWM Dim #1

5 3.5V 6 PWM Dim #2

7 GND 8 GND

9 24V 10

24V

11 GND 12

GND

13 12V 14

12V

15 12V 16

24V

17 GND 18

GND

19 GND 20

GND

21 GND 22

L/DIMO_VS

23 L/DIM0_MOSI 24

L/DIM0_SCLK

18 Pin (Power Board ↔ Main Board)

1 Power on 2 Inverter On/off

3 3.5V 4 PWM Dim #1

5 3.5V 6 PWM Dim #2

7 GND 8 GND

9 24V 10 24V

11 GND 12 GND

13 12V 14 12V

15 12V 16 24V

17 GND 18 GND

Screen (LA)

Check the DC 24V, 12V, 3.5V



11

Direct LED Power Board

Edge LEDPower Board

P203

1~5 12V

6~10 GND

P202

1~5 24V

6~10 GND

11 Error

12 Inverter ON( 3.3V)

13 A-dim

14 P-dim

Check the DC 24V and Inverter on

Repair Method by Symptoms 4-3. No Picture Check(Check LED Driver 24V )

12

No sound N

Y

Cancel OFF

Check audio B+ 24V of Power Board

Y

N

Replace Power Board

N

Y

Replace Speaker

End

<No Sound with Picture working condition>

SpeakerOff

CheckVoltage

(24V)

☞Page 15~16Check User menu speaker off

Check Speaker Cable Disconnection

Replace main BoardDisconnection

Repair Method by Symptoms 5-1. No Sount Check(Flow Chart)

13

‘13 LA Series

24 Pin (Power Board ↔ Main Board)

1 Power on 2 INV ON3 3.5V 4 PDIM#15 3.5V 6 PDIM#27 GND 8 GND9 24V 10 24V

11 GND 12 GND13 12V 14 12V15 12V 16 24V17 GND 18 GND

Checking method(direction) when there is no sound

①

②

<No Sound/Picture OK >

① Check the contact condition of or 24V connector of Main Board

② Measure the 24V input voltage supplied from Power Board (If there is no input voltage, check the connector)

Power BoardMain Board

Repair Method by Symptoms 5-2. No Sount Check(Troubleshooting)

14

ScreenOK?

N

YCheck external device connection condition

Y

N

Check and replace Link Cable

Good?

Y

NScreenOK? Replace Main B/D

Replace module

End

Vertical/Horizontal bar, residual image, light spot

Request repair for external device

☞Page 62

Y

N

ReplaceModule

ScreenOK?

End

☞ Page 31

Check Test pattern

6. Picture Error

Check color condition by input-External Input-Component-RGB-HDMI/DVI

Board Check method

Repair Method by Symptoms 6. Picture Error Check(Flow Chart)

15

Category Items Failure Cause Conditions

MainB/D

ICPicture

distortionFailure in I2C communication between MICOM and Main IC

MainB/D

ICPicture

distortionPicture occasionally cracked by the soldering on Main IC

MainB/D

ICPicture

distortionPicture cracking due to poor soldering on Main IC

MainB/D

ICPicture

distortionR-color noise caused by poor soldering on Main IC

Repair Method by Symptoms 7-1. Sysmptoms List(Main Board)

16


MainB/D

ICPicture

distortion Mosaics generated from poor inside Main IC

MainB/D

ICPicture

distortionPicture cracking from poor service of an element inside Main IC

MainB/D

IC Static screen Screen frozen from a poor feature in Main IC

MainB/D

IC No sound No sound due to a poor feature in Audio IC


17


SpeakerCable

Poor processing

Noise in sound

A “woong ~” sound from the right Speaker caused by a speared damage in Sound Cable

Speaker System

Poor processing

Noise in sound

A noise and vibration produced from influx of alien materials into Speaker System

Speaker System

Poor processing

Noise in sound

A noise and vibration produced from influx of alien materials into Speaker System

FFCCable

Poor contactPicture

crackingPicture cracking around the contour from poor contact between FFC Cable PINs


18


Module Panel Vertical barsVertical bars caused by a irregular feature in the Panel



Module Panel Dark screen Screen getting partially dark by a defect inside the Panel

Repair Method by Symptoms 7-2. Sysmptoms List(Module)

19


Module Driver B/D Dark screenScreen getting partially dark by a failure in MODULE DRIVER B/D

Module Panel Vertical barsVertical bars caused by a poor feature in the Panel

Module Driver B/D1/3 part of

Screen getting dark

1/3 part of Screen (left/center/right) getting dark due to a defective feature in Driver B/D

Module Panel Alien materialsInflux of alien materials into the Module during the assembling process


20


ModuleConnector

s1/2 of Picture

crackingPicture cracking from contamination by foreign materials inside a connector

Module Panel Dark screen Screen getting dark from a defect in LED unit inside the Panel

Module Panel Vertical barsVertical bars caused by a defective feature in the Panel

Module Panel Vertical barsVertical bars caused by a defective feature in the Panel


21


Module PanelScreen partially

too brightScreen partially getting too bright from a failure in LED inside the Panel

Module PanelAlien materials

insideMoisture inflow into the product

Module Panel Film separation Film separation from defective processing

Processing failure

Processing failure Shipment

setting failure With the Shipment setting inapplicable, Shipment is made only in a control mode


22


T-ConB/D

EOSVertical bars

evenly spacedDamage in Electrical Over Stress

T-ConB/D

EOSVertical bars

evenly spacedDamage in Electrical Over Stress

T-ConB/D

EOSPicture

distortion Poor features in T-CON

T-ConB/D IC Picture

distortion

Picture cracking from a poor feature in T-CON IC


23


T-ConB/D

ICPicture

distortionPicture cracking from a poor feature in 3D Formatter IC

T-ConB/D

ICPicture

distortionPicture cracking from contamination around 3D Formatter IC

T-ConB/D

ICPicture

distortionPicture cracking from an error in Boot Data

T-ConB/D

ICPicture

distortionPicture cracking from an error in Boot Data


24


T-ConB/D IC Picture

distortionPicture cracking due to desquamation of FRC IC

T-ConB/D IC Picture

distortionPicture cracking due to desquamation of FRC IC


25


LVDSCable

Poor contact

Picture distortion

Picture cracking along the contour from poor contact between LVDS Cable PINs

LVDSCable

Poor contact

Picture distortion

Picture cracking from poor contact between LVDS Cable PINs

LVDSCable

Poor contact

Picture distortion

Picture cracking along the contour from poor contact between LVDS Cable PINs

Repair Method by Symptoms 7-3. Sysmptoms List(LVDS Cable)

26


FFCCable

Poor contact

Picture distortion

Picture cracking along the contour caused by poor contact between FFC Cable Pins

Processing failure

Processing failure

Shipment setting failure

With the Shipment setting inapplicable, Shipment is made only in a control mode

Cabinet ICM Filter Desquamation of ICM Filter

Some space made Inside from tear-off of ICM Filter caused by a external shock

Cabinet DamageVibration and

noise in Speaker System

Speakers shaking from some damage in the Cabinet Speaker Boss

Repair Method by Symptoms 7-3. Sysmptoms List(FFC Cable, Cabinet, etc)

27

Mosaic Patterns Picture Distortion

Picture Smear

Repair Method by Parts 8. Main Board Check (Symptoms)

28

Color smearing

1. Symptoms : Screen color smearing intermittently

2. Cause of failure : Link cable contact fault

<Check Point> <Repiar method> 1. Check RGB pattern with ‘ADJ Key through SVC Remote

2. Link cable by gently tapping the contact area on the symptoms of hand Checked

3. Link cable disassembly and re-assemble

4. Check whether the screen display is normal.

Repair Method by Parts 8. Main Board Check (One-Point Repair)

29

1. Symptoms : Auto Power On/Off

2. Cause of failure : Main board failure

<Check Point> <Repiar method>

1.Press Button ‘In-Start Mode’ Key2.Enter ‘Power Off Status’

1.If there are “POWER_OFF_BY_NO_ POLLING” message

2. Replace the main board

3. Check the condition of Screen

*POWER_OFF_BY_NO_POLLING :If there are no communications between micom and Host CPU for 15second → Micom will reboot all system

Repair Method by Parts 8. Main Board Check (One-Point Repair)

30

Output voltage of US1

PANEL VCC : F1 or C1(12V) VGL : C251 (-6V) VCC : C215 (3.3V)VGH : R271 (28V)VDD : C239 (16V)

A failure condition

P VCC

VGH

VCC

VGL

VDD

* P-VCC: A standard voltage to activate the LCD VCC: Usually 3.3V power required to activate Digital IC VDD: A voltage supplied to Source Drive IC for activation of LCD VGL/VGH: Voltages required to turn TFT Gate on/off -VGL: TFT Gate on -VGH: TFT Gate off

1.Title: No Display (Only BackLight or multiple vertical bars)

- Sound Normal/CH Volume Control Normally

2. Applied to: LK, LW57, and 65

3. Troubleshooting: As shown below, inspect the P-VCC(12V) B/D inside T-CON

and US1 output voltage.

Upon an abnormal voltage, open and re-check the FFC leading from T-CON to the Module.

Upon recurrence of a same failure, change T-CON or the Module if the voltage is normal.

(Refer to below Normal Voltage)T-Con Board

Repair Method by Parts 9. Module Check(One Point Repair)

31

Input voltage of LVDS Output voltage of IC 401 output

P VCC : P701 48~51 PIN (12V)

P701

P VCCVCC

VDD

VGH VGL

VCC : D403 (3.3 V) VDD : D402 (16V) VGH : D400 (27V) VGL : C450 (-5V)

A failure condition

No picture (Only backlight)

* P-VCC: A standard voltage to activate the LCD VCC: Usually 3.3V power required to activate Digital IC VDD: A voltage supplied to Source Drive IC for activation of LCD VGL/VGH: Voltages required to turn TFT Gate on/off -VGL: TFT Gate on -VGH:TFT Gate off

1.Title: No Display (Only BackLight)

- Sound Normal/CH Volume Control Normally

2.Applied to: LW9500, LW9600, andLW9800

3. Troubleshooting:

Check if Back Light is ON and, if it’s ON, re-check T-CON as the following sequence.

Change the Module if the voltage is normal. Change T-CON if voltage abnormal.

T-Con Board T-Con Board

Repair Method by Parts 9. Module Check(One Point Repair)

9. Wi-Fi Operating Checking(Flow Chart)

32

Wi-Fi operating error

Check the INSTART menu

Wi-Fi Mac value is “NG”?

Y

Check & Repair Wifi cable

connection

N Check the Wifi waferPin no.1

Change the Wifi assy

Y

Y

N ReplaceMain B/D

Wi-Fi Mac value is “NG”?

N

Close

PIN USB interface

1 Vcc(3.3V)2 DM3 DP4 GND5 WOW6 NC

Pin map

NormalVoltage

3.3V

Close

☞Page 34

Repair Method by Parts 10-1. Wi-Fi Check(Flow Chart)

33

1. Symptoms : Wi-Fi disconnection

2. Cause of failure : Caused by bad Wi-Fi Module

<Check Point> <Repiar method>

1. Check the Wi-Fi Version at INSTART menu - Wi-Fi MAC and IP Address to check an abnormal Inspection

1. Wi-Fi Module replacement2. Check the wi-fi Version at INSTART menu - Wi-Fi MAC and IP Address normal check connections from main to Wi-Fi module

Repair Method by Parts 10-2. Wi-Fi Check(One Point Repair)

10. Camera Operating Checking(Flow Chart)

34

Camera Operating Error


Camera Ver. is “NG”?

Y

Check & Repair Camera cable

connection

N Check the Camera waferP4200 (pin no.2)

Change the Camera assy

Y

Y

N ReplaceMain B/D

Camera Ver. is “NG”?

N Close

Close

CheckVoltage(3.3V)

Repair Method by Parts 11. Camera Check(Flow Chart/Troubleshooting)

35

Y

N

Check M-Remote

itself Operation

Y

Check & ReplaceBatterry of M-Remote

Press the ‘wheel’

N

N

N

Replace M4

Turn off/on the set

Press the ‘back’ and ‘home’ key at the same time

about 5secY


RF Receiver ver is “00.00”?

Y

N

Down load the Firmware

* INSTART MENU15.RF Remocon Test3. Firmware

download

Y

Check RF assy connection N

Close

Close

Close

NormalOperating?

NormalOperating?

Is it shown ‘ok’ message?

Is it shown ‘ok’ message?

Y

Press the wheel

☞Page 50

Close

Close

ReplaceRF assy Cable

Repair Method by Parts 12-1. Magic Remote Check(Flow Chart)

36

RF Pairing/Un-Pairing Method

　 Method Description

RF Pairing

1. Method 1 - If un-paired, just press "OK"button. - If paired, press "OK" button after un-pairing.2. Method 2(Repairing) - Press "BACK"button for 5 sec.

▶When pairing, the remote should make a pairing request IR signal to TV.▶When TV receive the IR signal, it should send “ pairing request packed" to the RF receiver.▶ After pairing success, the remote LED should blink for some time and TV sends "pairing success pack" back to TV.▶When remote try's to un-pair, it doesn't care about state of receiver(stand alone).

RF Un-Pairing

Depending on Magic remotePress "HOME/SMART" button and "BACK" button at the same time for 5sec.R/C LED blinks 3times after a few sec's.Then un-paired. To re-pair Press OK button.

▶When remote try's to un-pair, it doesn't care about state of receiver(stand alone).▶After un-pairing, all pairing information should be erased.▶After un-pairing, LED should blink 3times.▶The remote just becomes active only in IR mode control function.

Repair Method by Parts 12-2. Magic Remote Check(Pairing/Un Pairing)

37

‘13 models -Back/Smart keys

M4 Remote MR13P Remote

To Register Magic Remote

Press the Wheel(OK) button on the remote control

Pop-up message will appear on screen

When Registration completes, another pop-up message will appear.

To bring up cursor, simply move remote around.Maximum communication distance:10m or 32.8ft

Unregister Magic Remote Control

• Press the “Home” and “Back” on the remote fo 5 seconds• The Red LED at the top of the Remote will blink 3time• To re-register the Remote, follow first procedure

Repair Method by Parts 12-3. Magic Remote Check(Register/Unregister)

38

Y

N

Remote control(R/C) operating error

Check R/C itself Operation Operating

OK?

OperatingOK?

Y

Replace R/C

If R/C operate,Explain the customer cause is interferencefrom light in room.

Check R/C OperatingWhen turn off light

in room

Check & ReplaceBaterry of R/C

Check & RepairCable connectionConnector solder

OperatingOK?

Check B+ 3.5VOn Main B/D

☞Page 52~55

VoltageOK?

N

N

Check 3.5v on Power B/DReplace Power B/D or

Replace Main B/D(Power B/D don’t have problem)

Check IROutput signal

NormalSignal?

N

Y

Repair/ReplaceIR B/D

N

ReplaceMain B/D

Y

YClose

Close

☞Page 52~55☞Page 52~55

☞Page 10~12

Repair Method by Parts 13. Remote Control Check(Flow Chart)

39

1.2. Check IR cable condition between IR & Main board.3. Check the st-by 3.5V on the pin no.44. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog Tester

needle moves slowly, and defective when it does not move at all.

P41011 GND2 KEY13 KEY24 +3.5V_ST5 GND6 LOGO/LED_R7 IR8 GND

②

③

④

①

Main Board

Repair Method by Parts 13-2. Remote Control Check(Troubleshooting)

40

Checking order

1, 2. Check Motion cable condition between Motion assy & Main board.3. Check the 3.3V on the pin no. 1.

P48001 3.3V2 GND3 RX4 TX5 RESET6 DC7 DD8 GND

①

②

③

<LM Series>

Main Board


41

P40021 GND2 KEY13 KEY24 +3.5V_ST5 GND6 LED7 +3.5V_ST8 GND

Checking order

1, 2. Check IR cable condition between IR & Main board.3. Check the st-by 3.5V on the pin no 4,7.4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog

Tester needle moves slowly, and defective when it does not move at all.

①②

③

④

<LA Series>

Main Board


42

Error symptom ContentVideo Error Color error

Adjustment Test pattern - ADJ Key

You can view 6 types of patterns using the ADJ Key

Checking item: 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR, SCAN BAR)4. Video error (Classification of MODULE or Main-

B/D!)

Adjustments method after Repair 16. Tool option setting method after main B/D change(adjustment RGB Pattern)

43

Step 1. Check full model name of your TV(Select one)a. Check a label on TV(Side or Rear)

b. Check menu(Non-Smart TV model) - Press(MENU) key on remot

- Press((Red) “Customer Support” key on remote - Select “Produce/Service Info” - Check “Model/Type”

b. Check SETUP(Smart TV model) - Press(Home) key on remot

- Select “SETUP” - Move to “SUPPORT” - Select “Product/Service info”

Step 2. Upgrade TV

- Check “Model/Type”

a. Make a folder “LG_DTV” on USB driveb. Save the software in “LG_DTV” folder. Make sure file is unzipped before placing in Folderc. Insert USB memory drive into USB port on TV

d. Select “Start” if “TV Software Upgrade” Pop-up appearse. Save the software in “LG_DTV” folder. Make sure file is unzipped before placing in Folderf. Insert USB memory drive into USB port on TV

If current software on TV is same with or newer thanThat on USB drive, TV software Upgrade menu won’t be opend(Some USB memory devices may not be compatible with TV)

Note)

Please wait while the update is copied to TV ※ Don’t remove USB drive while this message is displayed ※ Don’t unplug TV power cord while this message is displayed

Software upgrade in on progress ※ Don’t unplug TV power cord while this message is displayed

After the upgrade is completed, this message is displayedTV will restart automatically in 5 sec, than TV is ready to use

Adjustments method after Repair 17. Software Upgrad method with USB Memory

Course title LCD TV Repair Guide HandbookCategory

□ Leadership □ Marketing □ Sales ■ CS □ Manufacturing □ Quality □ Biz. administration

Published on 04/01/2014

Developed by HE CS Technology Support Team

Published by Yongsu kim(e-mail: [email protected])

Updated on 11/02/2014

※ No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system without written permission from LGE.

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LCD TV Repair Guide Handbook_140211_v1