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LG Electronics 425020 manual

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Table of contents for the manual

  • Page 1

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com LCD TV SER VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : LD84D MODEL : 42 LG5010 42 LG5010-ZD 42 LG5020 42 LG5020-ZB 42 LG5030 42 LG5030-ZE[...]

  • Page 2

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 2 - CONTENTS CONTENTS .............................................................................................. 2 PRODUCT SAFETY ........[...]

  • Page 3

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replac[...]

  • Page 4

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 4 - CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS[...]

  • Page 5

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 5 - IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat a[...]

  • Page 6

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 6 - SPECIFICA TION NOTE : Specifications and others are subject to change without notice for improvement . 4. General Specification No Item Sp[...]

  • Page 7

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com 5. MODEL General Specification - 7 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only No Item Specification Remarks 1 Broadcasting system 1) PAL-BG 2) PAL-DK 3) PAL-I/I’ 4) SECAM L/L’ 5) DV[...]

  • Page 8

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 8 - 6. Chroma & Brightness 6.1 37"LCD Module 1) Standard Test Condition (The unit has been ‘ON’) 2) Stable for approximately 30 m[...]

  • Page 9

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 9 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 6.3 47"LCD Module 1) Stable for approximately 60 minutes in a dark environment at 25± 2_ and windless room 2) Ambient Humidity: 50±[...]

  • Page 10

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 10 - 8. Component Video Input (Y, P B , P R ) 9. RGB PC No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remarks 1. 720*400 31.[...]

  • Page 11

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 11 - 10. HDMI Input (DTV) 11. HDMI Input (PC) No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed Remark 1. 720*480 31.47 59.94 27[...]

  • Page 12

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 12 - 12. Mechanical specification 12-1. 37LG5000 No. Item Content Unit Remark 1. Product Widt(W) Length(D) Height(H) mm Dimension Before Packi[...]

  • Page 13

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 13 - ADJUSTMENT INSTRUCTION 1. Application Range These instructions are applied to all of the LCD TV, LD84D Chassis. 2. Notice 2.1 The adjustm[...]

  • Page 14

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 14 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only O USB DOWNLOAD 1. Put the USB Stick to the USB socket 2. Automatically detecting update file in USB Stick - If your downloaded program ve[...]

  • Page 15

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com MODEL: 209 in Pattern Generator(480i Mode) PATTERN : 65 in Pattern Generator( MSPG-925 SERISE) Impress Resolution 1080i MODEL: 223 in Pattern Generator(1080i Mode) PATTERN: 65 in Pattern Generator( MSPG-925 SERISE) Adjustment pattern (COMPONENT ) - Adjust by comma[...]

  • Page 16

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - After done all adjustments, Press "In-start" button and compare Tool option and Area option value with its BOM, if it is correctly same then unplug the AC cable. If it is not same, then correct it same with BOM and unplug AC cable. For correct it to th[...]

  • Page 17

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 17 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 4.5 EDID DATA Note) Because downloading can be down at the power on mode only, if it is not set, press the Power ON key of the remote con[...]

  • Page 18

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 18 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. Adjusting the White Balance 5.1 Overview - Purpose and principle for adjusting the white balance - Purpose : Adjust the white balance [...]

  • Page 19

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 19 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 6.3 Reference ( White Balance adjustment coordinate and White balance) O Brightness: Full white 216 Gray O Standard color coordinate and [...]

  • Page 20

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 20 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 10. ISP Download (option) 10.1 Overview The Micom upgrade via the external port for the service for the customer. 10.2 Device to use 1) P[...]

  • Page 21

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 21 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1 1. USB S/W Download (option) 11.1 Overview The USB download is for the quick service response via the S/W upgrade and for applying the [...]

  • Page 22

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 22 - TROUBLESHOOTING TV/CATV doesnt display Check TU500 Pin15(Video output), Pin16(Sound output) Can you see the normal signal? Check the o[...]

  • Page 23

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 23 - DTV doesnt display Check the output data of TU800 Pin 24~34 Can you see the normal signal? NO Could you measure voltage of TU800 &[...]

  • Page 24

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 24 - AV1/2/3 doesn t display Check J600,J600,JK607,JK618 Can you see the normal waveform? Check the input of Video switch(IC700). Can you s[...]

  • Page 25

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 25 - Component doesnt display Check J701. Can you see the normal waveform? Check the input of Component Audio switch(IC1001) , Can you see [...]

  • Page 26

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 26 - RGB PC doesnt displa y Check J703 , Can you see the normal waveform? Check the input of RGB Audio switch(IC1001) , Can you see the nor[...]

  • Page 27

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com - 27 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only HDMI doesnt display Check input connect J900 , J901, J902 Can you see the normal waveform? Check DDC communication lines(IC900, IC901,[...]

  • Page 28

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 28 - BLOCK DIAGRAM LVDS SC2_L/R_I N Saturn3+ STMAV340 (IC700) NTP3000A (IC1000) SP (R) SP (L) P1000 5V_ANT_MNT CI Slot (P800) EEPROM KIA7427 ([...]

  • Page 29

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 29 - EXPLODED VIEW 300 510 500 120 121 122 200 800 900 901 801 802 803 804 805 806 550 530 810 521 520 540 820 400[...]

  • Page 30

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com[...]

  • Page 31

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com[...]

  • Page 32

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com[...]

  • Page 33

    更多难得资料请到江南家电维修论坛免费下载！ http://bbs.520101.com Apr., 2008 Printed in Korea P/NO : MFL4133350 4[...]