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LG 32LG7000 Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LD88D
MODEL : 32LG7000
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/Latin America
Europe/Africa
Asia/Oceania
32LG7000-ZA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com

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Summary of Contents for LG 32LG7000

  • 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 LCD TV SERVICE MANUAL CHASSIS : LD88D MODEL : 32LG7000 32LG7000-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................23 EXPLODED VIEW .................. 33 SVC. SHEET ....................Copyright © 2008 LG Electronics. Inc. All right reserved. - 2 - 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. Copyright © 2008 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright © 2008 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2008 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    3) Temp. : -20 ~ 60 deg 4) Humidity : 10 ~ 90 % Input Voltage AC100-240V~, 50/60Hz Maker LG Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 SPDIF Out(1 EA) SPDIF Out For SVC, S/W Download, X-Studio Side(X-Studio Only Series) Bluetooth Bluetooth Phone(JPEG), Headset 32/37/42/47/52LG7000 models Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 108. SXGA FULL HD only 1400*1050 65.317 59.979 121.75 SXGA FULL HD only 1920*1080 66.587 59.934 138.5 WUXGA Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 108. SXGA FULL HD only 1400*1050 65.317 59.979 121.75 SXGA FULL HD only 1920*1080 66.587 59.934 138.5 WUXGA Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    * EDID data and Model option download (RS232) Item CMD1 CMD2 Data0 This spec. sheet is applied to all of the LD88D chassis manufactured at LG TV Plant all over the world. Enter Download When transfer the ‘Mode download ‘Mode In’...
  • Page 11 00 00 00 FC 00 35 32 4C 47 37 30 30 30 0A 20 20 20 20 Checksum: Changeable by total EDID data. Port No. 10:HDMI1, 20:HDMI2, 30:HDMI3, 40:HDMI4 Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 Adjustment R/C IN-START -> Enter the mode of White-Balance, the pattern will come out. <Fig. 1> connecting picture (On Automatic Control) Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only...
  • Page 13 192, and adjust other two lower than 192. (When R/G/B GAIN are all 192, it is the FULL DYNAMIC Range of Module) Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Trouble Shooting

    8. Check the INV 24V 6. Check the VSC low voltage output circuit. Voltage output. Manufacture enterprise meaning of a passage. Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 Measure output voltages(16V, 12V, 5V) on the PSU. -> [Main P1000] pin1,2:16V; pin(5,6):12V; pin(9~12):5V; If the measured values are not a proper value, replace PSU. Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only...
  • Page 16 If not OK then replace IC100. IC1206(1.2V) No problem No problem Replace T-con board of LCD Module. Replace IC100. Replace regulator. Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 If App S/W OK then replace Main B/D. 2. Mute check:IC600 pin25 Check App S/W If App S/W OK then replace IC600. Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 If App S/W OK then replace Main B/D. 2. Mute check : IC600 pin25 Check App S/W. If App S/W OK then replace IC600. Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 2. L : JK102 pin5D and C613 No problem Check App S/W. If App S/W OK then replace IC100. Copyright © 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 If App S/W OK then replace IC200. No problem Check App S/W. If App S/W OK then replace IC100. Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 L : JK102 pin5D and C613) 4. Check the Audio Signal is Normal. (SPK_L/R : L603, L604) Replace Main B/D. Copyright © 2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 Check P903(main board) 2,3pin signal Setting headset to ‘Pairing Mode’ and retry USB interface No problem Replace Blue Tooth board. Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...

  • Page 23: Block Diagram

    IC 402 IC403,405,406 IC 603 CI Slot (P400) 74LVC 541A(PW) Buffer IC400 Tun er (TDFV- G1 35D1) TU3 00 Copyright © 2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 2. FRC Address bus Control Bus Data BUS Clk in Data In/out Copyright © 2008 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 Bluetooth Audio : PCM Picture : JPEG Module FLI10620H USB20_1_DP USB20_1_DM Bluetooth Module M101 BLUE_DP IC101 BLUE_DM LBMS-2C66B4 Copyright © 2008 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 4. SCART 1, 2, AV3 Copyright © 2008 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
  • Page 27 5. Component, RGB, HDMI, RS232 NLASB3157 IC502 Copyright © 2008 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 6. Tuner, CI Tuner (TDFV-G135D1) TU300 PCM CI A Car d Tu ner ( TDFV-G13 5D1 ) TU30 0 Copyright © 2008 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
  • Page 29 7. Audio Path(MSP4458, NTP3000A) Copyright © 2008 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
  • Page 30 W : 0xA6 [Slave I2C 0] R : 0xA7 EDID MSP4458 AT24C02BN 0x80 [DSDA1,DSCL1] EYEQ 0xE8 MICOM EDID AT24C16AN 0x94 Copyright © 2008 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...
  • Page 31 10-1. Power tree Copyright © 2008 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only Only for training and service purposes...
  • Page 32 10-2. Power tree Copyright © 2008 LG Electronics. Inc. All right reserved. - 32 - LGE Internal Use Only Only for training and service purposes...

  • Page 33: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only Only for training and service purposes...
  • Page 34 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER HDMI THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. F l a s h & C I Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 Jul., 2008 P/NO : MFL42349001 Printed in Korea...

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