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LED LCD TV
SERVICE MANUAL
CHASSIS : LD0AY
MODEL : 26LV255H
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67180604 (1111-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
26LV255H-ZA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea
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Summary of Contents for LG 26LV255H
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Page 1: Service Manual
Internal Use Only 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 : LD0AY MODEL : 26LV255H 26LV255H-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67180604 (1111-REV00) Printed in Korea... - Page 2 PRODUCT SAFETY ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............8 BLOCK DIAGRAM...................14 EXPLODED VIEW .................. 15 SCHEMATIC CIRCUIT DIAGRAM .............. Copyright ©2011 LG Electronics. Inc. All rights reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
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Page 3: Safety Precautions
An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright ©2011 LG Electronics. Inc. All rights reserved. - 3 - LGE Internal Use Only Only for training and service purposes... -
Page 4: Servicing Precautions
Copyright ©2011 LG Electronics. Inc. All rights reserved. - 4 - LGE Internal Use Only Only for training and service purposes... - Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright ©2011 LG Electronics. Inc. All rights reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
- Page 6 HDTV 1080i 1920x1080 33.75 60.00 HDTV 1080i 1920x1080 33.72 59.94 HDTV 1080i 1920x1080 56.250 HDTV 1080p 1920x1080 67.5 HDTV 1080p Copyright ©2011 LG Electronics. Inc. All rights reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
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Page 7: Hdmi Input
74.25 HDCP 1280*1024 63.981 60.2 108.875 SXGA HDCP / FHD model 1920*1080 67.5 148.5 WUXGA HDCP / FHD model Copyright ©2011 LG Electronics. Inc. All rights reserved. - 7 - LGE Internal Use Only Only for training and service purposes... -
Page 8: Adjustment Instruction
3) Click “Read” tab, and then load download file(XXXX.bin) by clicking “Read”. 4) Click “Connect” tab. If “Can’t” is displayed, check connection between computer, jig, and set. Copyright ©2011 LG Electronics. Inc. All rights reserved. - 8 - LGE Internal Use Only Only for training and service purposes... - Page 9 4) RGB (PC : 1024 x 768 @ 60 Hz) 5) HDMI 6) PC Audio In * Display and Sound check is executed by Remote control. Copyright ©2011 LG Electronics. Inc. All rights reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
- Page 10 * For Service main Assembly, EDID have to be downloaded to Insert Process in advance. Copyright ©2011 LG Electronics. Inc. All rights reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
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Page 11: Auto Download
Vendor Specific(HDMI) Version Digital : 1 INPUT MODEL NAME(HEX) Revision Digital : 3 HDMI1 65030C001000 HDMI2 65030C002000 HDMI3 65030C003000 Copyright ©2011 LG Electronics. Inc. All rights reserved. - 11 - LGE Internal Use Only Only for training and service purposes... - Page 12 Confirm whether is normal or not when between power board’s ac block and GND is impacted on 1.5 kV(dc) or 2.2 kV(dc) for one second. Copyright ©2011 LG Electronics. Inc. All rights reserved. - 12 - LGE Internal Use Only...
- Page 13 (RS232 : ci 00 20) CMD 1 CMD 2 Data 0 3) Result value i 01 OK 1d1852d21c1ed5dcx CI+ key Value Copyright ©2011 LG Electronics. Inc. All rights reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
- Page 14 74LVC16244 PI_TS_DATA[0:7] LED Panel Buffer IC1501 LVDS (8bit or 10 bit) FE_TS_DATA[0] PKT_DATA[0] FE_TS_DATA[0:7] Serial Flash CI_TS_DATA[0:7] CI_ADDR[0:7] IC1401 PCM_A[0:7] For Boot B_TMDQ[0:16] DDR3 (2GB) IF_N/P_MSTAR IC1201 TU_CVBS A_TMDQ[0:16] TU_SIF DDR3 (1GB) IF_AGC IC1202 F-SCART TV/DTV_VOUT Mstar S7 NAND Flash PCM_A[0:7] SC1_CVBS/R/G/B/FB_IN HYNIX(2G)
- Page 15 * Stand Base + Body * Set + Stand...
- Page 16 Ver. 0.1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FLASH/EEPROM/GPIO Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
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Page 17: Lge Internal Use Only
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN2, HW OPT Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes... - Page 18 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR FRC_DDR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 19 GP2R ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER_LARGE Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 20 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 21 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. IR/CONTROL-L Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 22 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. USB_OCP_DIODE Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 23 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 24 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. RGB/SPDIF/HP Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 25 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. RS232C_9PIN Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 26 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS_LARGE Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 27 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR DDR_256 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 28 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SFLASH_1MB Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 29 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER_L Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 30 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 31 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. AMP_NTP Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 32 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. REAR_JACK Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 33 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SIDE_JACK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 34 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCI Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 35 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SMD_GAS THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 36 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR L/DIM_LED THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 37 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...