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LG 26LS3500 Service Manual
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LG 26LS3500 Service Manual

Led lcd tv
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See also: Owner's Manual , User Manual
LED LCD TV

SERVICE MANUAL

CHASSIS : LA25A
MODEL : 26LS3500
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67454204 (1203-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
26LS3510
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
26LS3500-UD
26LS3510-UA
Printed in Korea

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Summary of Contents for LG 26LS3500

  • Page 1: Service Manual

    North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LA25A MODEL : 26LS3500 26LS3500-UD MODEL : 26LS3510 26LS3510-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67454204 (1203-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ..............6 TROUBLESHOOTING ................13 BLOCK DIAGRAM ................... 24 EXPLODED VIEW .................. 25 SCHEMATIC CIRCUIT DIAGRAM .............. - 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Product Safety

    An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specification

    2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 HDTV 1080P 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.00 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: Adjustment Instruction

    (1) Shipment conditions (2) Tool option menu (3) USB Download (S/W Update, Option and Service only) (4) Preset CH Information - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 ※ Manual ADC Confirmation using Service Remocon. After enter Service Mode by pushing “INSTART” key, ADJUST ADC (COMPONENT) : OK - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 70 | 00 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 BF 4.4. Tool Option Input - Input Model Tool Option according to BOM - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 (4) Video Signal Generator MSPG-925F 720p/204-Gray B Cut (Model: 217, Pattern: 49) ※ Color Analyzer Matrix should be calibrated using CS-1000 5.1.3. Equipment connection - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 - After final inspection, press In-Stop key of the Adj. R/C and check that the unit goes to Stand-by mode - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 Remark Audio 10.0 12.0 (1) Measurement practical Vrms condition max Output, - EQ/AVL/Clear Voice: Off (2) Speaker (8Ω Impedance) - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 (2) Select "Tool Option 1" and Push “OK” button. (3) Punch in the number. (Each model has their number.) - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Troubleshooting

    Check Inverter Control & Error Out P403 18 pin : High Check Power Board or Module P403 24 pin : low Change Module - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 Check IF_P/N Signal Bad Tuner. Replace Tuner. TU3700 10/11 Pin Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 Check CVBS Signal Bad Tuner. Replace Tuner. TU3700 8 Pin Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 R246 , R4016 Check CVBS_DET Signal Replace R9915 or R1666 Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Component Video

    Y/PB/PR signal Line Check COMP_DET Signal Replace R1614, R4223 or R1615 Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 Replace Jack H/V_Sync/R/G/B Signal Line Check DSUB_DET Replace R1146 or R1147 Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Check HDMI Signal Replace Main Board If no problem, check signal line Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 Replace connector Check Connector & P501 if found to be damaged. Check speaker resistance Replace speaker. and connector damage. - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 Check IF_P/N Signal Bad Tuner. Replace Tuner. TU3700 10/11 Pin Follow procedure ‘8. All source audio’ trouble shooting guide. - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 Check CVBS Signal Bad Tuner. Replace Tuner. TU3700 8 Pin Follow procedure ‘8. All source audio’ trouble shooting guide. - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 Check JK1102 & Signal Line Replace Jack Follow procedure ‘8. All source audio’ trouble shooting guide. - 23 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 24: Block Diagram

    BLOCK DIAGRAM - 24 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 25: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 25 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 2011.07.07 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TP_NON_EN Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 27 2011/08/13 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR RS232C_PHONE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 28 2011/06/03 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR DDR_256 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 29 2011.10.11 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR TUNER_NON_EU THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 30 2011.10.04 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. NTP-7500 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 31 2011/08/17 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR IR/CONTROL_W/O_IR_OUT THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 32 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SMALL_TN_LED_DRIVER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 33 2011/09/27 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SMALL_LVDS THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 34 2011/10/10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SMALL_POWER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 2011.11.02 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FLASH/EEPROM/GPIO Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 36 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER,IN/OUT,H/W OPT Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 37 2011/11/18 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR USB_OCP_DIODE_1EA THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 38 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI_2EA(NON SIDE HDMI) Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 39 2011.10. 14 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. REAR_NON_EU_ERRC Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 40 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Serial FLASH Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 41 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR MSTAR DEBUG_4PIN THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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