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LG Electronics LD84A manual

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Table of contents for the manual

  • Page 1

    LCD TV SER VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : LD84A MODEL : 32LG3000 32LG3000-ZA website:http://biz.LGservice.com Internal Use Only[...]

  • Page 2

    - 2 - LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 PRODUCT SAFETY ..................................................................................3 SPECIFICA [...]

  • Page 3

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 3 - SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by i n t h e Schematic Diagram and Replacement Parts List. It is essential that [...]

  • Page 4

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 4 - CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict betw[...]

  • Page 5

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 5 - IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique shou[...]

  • Page 6

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 6 - SPECIFICA TION NOTE : Specifications and others are subject to change without notice for improvement . 4. Module general specification Item Specification Remark Display Screen Device 32” wide Color Display Module LCD Aspec[...]

  • Page 7

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 7 - 5. Model general specification Item Specification Remark Market EU (PAL Market-26 Countries) DTV & Analog UK, France, Germany, Spain, Sweden, Finland, Italy, Netherland, Belgium, Luxemburg, Greece, Denmark, Czech, Austri[...]

  • Page 8

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 8 - 7. RGB PC INPUT Mode No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 1 720*400 31.468 70.08 28.321 2 640*480 31.469 59.94 25.17 VESA Input 848*480 60Hz, 852*480 60Hz 37.684 75.00 31.50 -> 640*480 60Hz Disp[...]

  • Page 9

    - 9 - LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark 1 720*400 31.468 70.08 28.321 HDCP 2 640*480 31.469 59.94 25.17 VESA HDCP 37.684 75.00 31.50 3 800*600 37.879 60.31 40.00 VESA HDCP 46.875 75.00 49.50 4 [...]

  • Page 10

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 10 - ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LCD TV with LD84A chassis. 2. Designation 1 ) The adjustment is according to the order which is designated and which must be foll[...]

  • Page 11

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 11 - * After downloading, have to adjust TOOL OPTION again. 1) Push "IN-START" key in service remote controller 2) Select "Tool Option 1" and Punch in the number.(Each model has their number.) 32LG5000-ZA : 8[...]

  • Page 12

    4. T otal Assembly line process 4.1. Adjustment Preparation (1) W/B Equipment condition CA210: CH 9, Test signal: Inner pattern (85IRE) (2) Above 5 minutes H/run in the inner pattern. (“power on” key of adjust remote control) (3) 1 5 Pin D-Sub Jack is connected to the AUTO W/B EQUIPMENT. (4) Adjust Process will start by execute I2C Command (Inn[...]

  • Page 13

    (3) DIGITAL DATA(HDMI-2) 256Byte (4) DIGITAL DATA(HDMI-3) 256Byte 1) All Data : HEXA Value 2) Changeable Data : *: Serial No : Controlled / Data:01 **: Month : Controlled / Data:00 ***:Year : Controlled ****:Check sum 4.7. HDCP (High-Bandwidth Digital Contents Protection) SETTING (Scaler : Mstar) - Connect D-sub Signal Cable to D-Sub Jack - Input H[...]

  • Page 14

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 14 - TROUBLESHOOTING 1. No Power (1) Symptom 1) It is not discharged minutely from the module. 2) Light does not come into the front LED. (2) Check process Plug in the power cord. Yes No Connect the Cable. No Is the fuse of PSU [...]

  • Page 15

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 15 - Yes No No Replace the Power board. Check the LCD Module. Reconnect Panel link cable. (P401 or P406 or P407) Replace the Main board. Change the IC(IC100). No Yes No Change Main bord. Yes No S/W download and set White Balance[...]

  • Page 16

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 16 - Yes No No Yes Replace Main board. Check the Power. Cable inserts well. Change the IC(IC100). Yes Yes No No Check the Tuner. Is video output of the Tuner normal?(CheckTU500 _Pin15) Is the LVDS cable connected well? Is the in[...]

  • Page 17

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 17 - Yes No Check the input source. If there is normal status, Replace main board. Same as Block A. Same as Block A. No Check the IC700. No Yes Is video input of SCART Jack normal?(Check JK600, JK601_Pin20) Check the input sourc[...]

  • Page 18

    - 18 - LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes Check the input source. Same as Block A. No Check the IC700. No Yes Is video input of the RGB jack normal? (Check JK703_Pin1, 2,3,13,14) No If there is normal status, Replace main board. If there is normal status, Replace m[...]

  • Page 19

    - 19 - LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes Yes No Set on speaker on menu. Download the EDID data. Check the Tuner in/Out. No Check th Speaker cable. No Replace IC100. No Replace IC1000. Replace main board. No Yes No No All input is no sound? Only HDMI is no Sound? O[...]

  • Page 20

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 20 - 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 (IC104) 24C512 (IC105) I2C_D_TU / I2C_A _TU KEY1/2 TV Tuner BOOSTER SIF TV_CVBS DDR Mem[...]

  • Page 21

    MEMO - 21 - LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes[...]

  • Page 22

    LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 22 - 300 200 510 121 500 120 122 400 401 800 801 802 804 803 530 521 821 805 550 910 904 902 901 905 903 900 830 540 EXPLODED VIEW[...]

  • Page 23

    Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only[...]

  • Page 24

    Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only[...]

  • Page 25

    Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only[...]

  • Page 26

    Feb., 2008 Printed in Korea P/NO : MFL41037107[...]