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LG 19LS4D-ZB Service Manual
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LG 19LS4D-ZB Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LD73B
MODEL : 19LS4D
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
19LS4D-ZB
Internal Use Only

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Summary of Contents for LG 19LS4D-ZB

  • Page 1 Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LD73B MODEL : 19LS4D 19LS4D-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................21 EXPLODED VIEW .................. 22 REPLACEMENT PARTS LIST ............... 24 SVC. SHEET ....................Copyright © 2007 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. - 3 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 4 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 © 2007 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 © 2007 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    RGB strip arrangement Coating Hard coating (3H), Anti-glare (Haze 25%) treatment of the front polarizer, Back Light 4 CCFL - 6 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 50.00 HDTV 1080i 1920X1080 33.75 60.00 HDTV 1080i 1920X1080 33.72 59.94 HDTV 1080i 1920X1080 67.50 60.00 HDTV 1080p - 7 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 HDTV 1080P 50Hz HDCP 1920X1080 67.43 59.94 148.352 HDTV 1080P 60Hz HDCP 1920X1080 67.50 148.500 HDTV 1080P 60Hz HDCP - 8 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 59.978 121.750 1680X1050 64.674 59.883 119.00 CVT Red. Blanking 1680X1050 65.290 59.954 146.25 1920X1080 66.647 59.988 138.625 WUXGA - 9 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    (1) ANALOG (128 bytes) This spec. sheet is applied to all of the LD73B chassis manufactured at LG TV Plant all over the world. 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F...
  • Page 11 - System control RS-232 Host should be “PC” for adjustment. automatically. - Before AV ADC Calibration, execute the “Module selection”. 5) Auto-RGB OK means adjustment is completed. Copyright © 2007 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 When W/B is completed, you can see ‘OK’ on PC monitor. <Fig. 2> Connecting picture (On Automatic Control) - 12 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 System Control3 AGC-L BlkLine Detector Audio Delay Power-off History DVI EQ Panel control EQ Gain Fan control XSTUDIO Control Copyright © 2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Troubleshooting

    9. Check the Power Manufacture’s model Module output circuit Module output circuit Board Output high passage tension circuit - 14 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 After removing the cables, connect them to the Power Board(except the SC101 connection cable), and change the AC voltage marking to manual. When ST-BY 5V does not operate, replace the Power Board. Copyright © 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only...
  • Page 16 After a COF crisis for each board, check the normal operation. For normal operation, normal ? corresponding COF failure means the module should be relaced. - 16 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 Is the LVDC cable Reconnect the LVDS cable in P800 normal? Is the IC700(FLI8548) Replace the VSC. Output normal? Copyright © 2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 IC(IC700) operate? normal? Replace the FIL8548 IC(IC700) Is the Ctrl Board of Replace the Ctrl B/D. Module normal? Copyright © 2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 (6) In case of an unusual display in SCART1 mode Is the Video input of the Check the input source A/V Jack(J1200) normal? Same as Block A - 19 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 Replace the IC1300 for specific input? CAX2069 refer to circuit diagram operating normally? (STA335BW) (except HDMI,DTV,RF) Replace the VSC B/D - 20 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Block Diagram

    BLOCK DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...

  • Page 22: Exploded View

    EXPLODED VIEW - 22 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 Remote Controller Assembly 19_22LS4D, EU(PAL), LD73B MCK36759201 Cover MOLD ABS HF-380 MKJ339814 ABS, HF-380 TX BATTERY COVER” 6631900109E Harness,Single LVDS CABLE(LG) Locking type FI-X30HL SMH200 150mM 1.25MM 30P-28P - 23 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...

  • Page 24: Replacement Parts List

    0402B102K500CT 1nF 10% 50V X7R -55TO+125C C133 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R -55TO+125 C121 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R -55TO+125 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 24 - Only for training and service purposes...
  • Page 25 C1005X7R104KET 100nF 10% 16V X7R -55TO+125 C1408 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 16V 110MA -40TO C1703 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R -55TO+125 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...
  • Page 26 C1005C0G1H101JT 100pF 5% 50V C0G -55TO+125 C222 0CK103BH56A C1005X7R1E103KT- 10nF 10% 25V X7R -55TO+12 C506 0CK106EF56A C3216X7R1C106KT 10uF 10% 16V X7R -55TO+125 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 26 - Only for training and service purposes...
  • Page 27 0603B472K500CT 4.7nF 10% 50V X7R -55TO+125 C558 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R -55TO+125 C639 0CE476WC6DC MVK5.0TP6.3VC47M 47uF 20% 6.3V 36MA -40TO+ Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...
  • Page 28 C1005X7R1E103KT- 10nF 10% 25V X7R -55TO+12 C753 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R -55TO+125 C813 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R -55TO+125 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 28 - Only for training and service purposes...
  • Page 29 74LCX244MTC 2TO3.6V 0.01mA BUFFER/LINE DRI D1301 0DS181009AA KDS181 1.2V 85V 300MA 2A 4NSEC 150MW SOT23 IC304 0ISTLPH048A 74LVC245APW 1.2TO3.6V 0.01mA TRANSCEIVER T Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
  • Page 30 2SC3052 NPN 6V 50V 50V 200MA 100NA 150TO80 AR702 0RZZH033273 MNR04M0ABJ330 33OHM 5% 1/16W 4 SMD R/TP 8P Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 30 - Only for training and service purposes...
  • Page 31 R108 0RJ1002C678 MCR01MZPJ103 10KOHM 5% 1/16W 1005 R/TP RO R116 0RJ2001C678 MCR01MZPJ202 2KOHM 5% 1/16W 1005 R/TP ROH Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
  • Page 32 R1244 0RJ0752C678 MCR01MZPJ750 75OHM 5% 1/16W 1005 R/TP ROH R1319 0RJ0000C678 MCR01MZPJ000 0OHM 5% 1/16W 1005 R/TP ROHM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 32 - Only for training and service purposes...
  • Page 33 R1429 0RJ1001C678 MCR01MZPJ102 1KOHM 5% 1/16W 1005 R/TP ROH R1727 0RJ0332C678 MCR01MZPJ330 33OHM 5% 1/16W 1005 R/TP ROH Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
  • Page 34 0RJ3300C678 MCR01MZPJ331 330OHM 5% 1/16W 1005 R/TP RO R245 0RJ0222C678 MCR01MZPJ220 22OHM 5% 1/16W 1005 R/TP - R Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 34 - Only for training and service purposes...
  • Page 35 R5005 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W 2012 R/TP ROHM R637 0RJ4700C678 MCR01MZPJ471 470OHM 5% 1/16W 1005 R/TP RO Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...
  • Page 36 0RJ0222C678 MCR01MZPJ220 22OHM 5% 1/16W 1005 R/TP - R R807 0RJ0000C678 MCR01MZPJ000 0OHM 5% 1/16W 1005 R/TP ROHM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 36 - Only for training and service purposes...
  • Page 37 Filter,Bead HH-1M3216-501JT 500OHM L602 6210TCE001G Filter,Bead HH-1M3216-501JT 500OHM L1205 6210TCE001G Filter,Bead HH-1M3216-501JT 500OHM L604 0LCML00020G Inductor,Multilayer,Chip MLI-201209-3R3K 3.3UH Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
  • Page 38 S/W,Firmware 4.17 5927 EUROPE FLASHROM IC802 SAA30715332 S/W,Firmware V3.02 B02B EUROPE FLASHROM LED5000 0DLLT0110AA LED,DIP LTL-1BEHJ-1 ROUND 3MM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 38 - Only for training and service purposes...
  • Page 39 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...
  • Page 40 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...
  • Page 41 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...
  • Page 42 PRINTED CIRCUIT BOARD MAIN (TOP) CONTROL MAIN (BOTTOM) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only for training and service purposes Only...
  • Page 43 Aug., 2007 P/NO : MFL36695321 Printed in Korea...

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