LG FLATRON E2040S Service Manual
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LG FLATRON E2040S Service Manual

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COLOR MONITOR
SERVICE MANUAL
MODEL: 
LGD -TLA1 )
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
                                                                                                                                                              *To apply the Novatek Chip. 
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only
Only for training and service purposes
E2040S
( E2040S-PNT.A**NAV for
 
**Sales Market 
North/Latin America
Europe/Africa
Asia/Oceania
- 1 -
Internal Use Only
 
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
LGE Internal Use

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Summary of Contents for LG FLATRON E2040S

  • Page 1                                                                                                                                                               *To apply the Novatek Chip.  Copyright © 2010 LG Electronics. Inc. All right reserved.

  • Page 2: Table Of Contents

    3) Input impedance: 75 Ω 8. WEIGHT (excl. packing) Weight: 2.6 kg (5.73 lbs) 3-3. Operating Frequency Horizontal: 30 ~ 83kHz Copyright © 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Precautions

      Copyright © 2010 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4   Copyright © 2010 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5   Copyright © 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6   Copyright © 2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Timing Chart

    H(Pixels) 67.500 1600 1152 108.0 1152 x 864 V(Lines) 75.000 H(Pixels) 1800 1600 1600 x 900 V(Lines) 1000 Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Disassembly

    Consequently, pull the base directly. The base. Use tool to open all latches. Put the front face down, disassembly back cover. Copyright © 2010 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 Unscrew the 4 screws on the main board. Remove the main board and the power board. The panel.  Remove the bezel.  Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 Disassemble the rear cover and the hinge ASS’Y. Disassemble the hinge and stand. Hinge top, hinge and stand.   Copyright © 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Block Diagram

    LVDS output U401 Panel Power CN302 to Panel sequence control circuit Block Q302 Q301 3.3V U701 Power input CN702 Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 Boost Circuit OVP circuit ON/OFF Current balance ON/OFF circuit Feedback Control IC ta9690 Current circuit Feedback DIM circuit Copyright © 2010 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13: Discription Of Block Diagram

    The Micom distinguishes polarity and frequencies of the H/V sync are supplied from signal cable. The controlled data of each mode is stored in scalar. Copyright © 2010 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...
  • Page 14 5. OVP circuit: set the maximum output voltage of OVP, through this voltage IC can neglect the OPEN’s string. 6. Current feedback: LED feedback current detection. Copyright © 2010 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only...

  • Page 15: Adjustment

    4、Scan serial No. to DDC recorder by Bar Reader, then read again in the Verify SN. 5、According to the message of DDC program, when the picture as fig.1 appears, it show DDC record has finished. Fig.1 Copyright © 2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only...
  • Page 16 ,then do DDC record again from the third step.   Fig.2 Copyright © 2010 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...

  • Page 17: Service Mode

    R/G/B-sRGB: Allows you to set the R/G/B- sRGB value manually. Connect to the PC Connect to the monitor   Figure 1 Cable Connection for Micom uploading Copyright © 2010 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...

  • Page 18: Troubleshooting Guide

    Check CN702 or replace U701 PIN2=3.3V U701   Check X401 oscillate Replace X401 waveforms are normal   Replace U401   Copyright © 2010 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Check C706,C707,C708,C709 PIN 2 =3.3V? Check BL ON/OFF pulse as Check CN702 contacting scope PIN 8 =5V? LIPS Copyright © 2010 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 D-SUB to Scaler pin 14 H Sync ? pin 15 V Sync? Trouble in cable or LCD module Copyright © 2010 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 14 H Sync? Check H/V sync line pin 15 V Sync? Trouble in cable or LCD module Copyright © 2010 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 Check FB701,C716 CN701=12V?     Check Vout about Check L801,D801,Q801 35V? Check main board Check main board    Replace panel Copyright © 2010 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23   signal Check DIM   Check U401   Check PANEL_VCC Check Q301, Q302   Check U401 X401   Copyright © 2010 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Wiring Diagram

      WIRING DIAGRAM 095G8018 3DJ02 095G801412X933   095G802210W506   095G176J 4H01   095G820H 6D522 Copyright © 2010 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...

  • Page 25: Exploded View

    It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © 2010 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only...

  • Page 26: Schematic Diagram

    47N16V DSUB_5V 5VCC D103 BAV70 ESD_VCC C121 R151 NC/0.22uF16V NC/4K7 1/16W 5% U101 R148 R149 4.7K1/16W 4.7K1/16W DDC_A_SCL DDC_A_SDA DDC_WP NC/M24C02-WMN6TP Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 56K 1/16W C302 R304 Q302 R307 0.47uF 16V PPWR_ON# LMBT3904LT1G 22K1/16W C304 R303 100N 16V 4.7K1/16W C303 R308 1UF16V 10K1/16W AO3401L Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 100N 16V C702 Q701 100N 16V R704 on_BACKLIGHT 5 22K1/16W U702 LMBT3904LT1G NC/AP1117D33L-13 VCC3.3 R705 1K1/16W BKLT-VBRI adj_BACKLIGHT 5 R706 100OHM1/16W Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 C418 NC/100N 16V HOLD# R411 100OHM1/16W SPI_CLK NC/0.22UF 10V R412 100OHM1/16W SPI_SI U403 EE_WP PM25LV020-100SCE R409 MSCL MSDA GNDSDA 10K1/16W NC/AT24C04BN Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 R839 0R05 1/4W DRIVER R840 R874 0R05 1/10W R867 R877 Q804 0R05 1/4W 2N7002K R876 Q803 10K 1/10W 2N7002K Q806 SST2907A Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 ISEN1_5 ISEN1_8 R807 1 OHM ISEN1_4 Vout R808 1 OHM ISEN1_1 ISEN2_7 R809 1 OHM ISEN2_5 R810 NC 1 OHM ISEN2_4 Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32   Feb.2010 P/NO: Printed in China Copyright © 2010 LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only Only for training and service purposes...

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