LG 47LB1DA-UB Service Manual
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LG 47LB1DA-UB Service Manual

LG 47LB1DA-UB Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LA61B
MODEL : 47LB1DA-UB
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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Summary of Contents for LG 47LB1DA-UB

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : LA61B MODEL : 47LB1DA-UB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 SVC REMOCON ..................16 VIDEO TROUBLE SHOOTING&BLOCK DIAGRAM ......17 AUDIO TROUBLE SHOOTING&BLOCK DIAGRAM......40 EXPLODED VIEW .................. 51 EXPLODED VIEW PARTS LIST ..............52 REPLACEMENT PARTS LIST ............... 53 SVC. SHEET ....................- 2 -...

  • Page 3: Product Safety

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE 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 replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.

  • Page 6: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Specification 2. Test method Each part is tested as below without special appointment. A. Temperature : 20±5°C F. Performance : LGE TV test method followed B.
  • Page 7 4. Chroma (SET With 45% Filter) Item Unit Remark White peak brightness cd/m 47LB1DA-UB (Center 1-point / Full White Pattern) White average brightness cd/m Brightness uniformity Full white Color coordinate Typ. 0.638 Typ. -0.03 0.340 +0.03 GREEN 0.279 0.611 BLUE 0.146...
  • Page 8 5. Component Video Input (Y, P Specification Proposed Resolution H-freq(kHz) V-freq(Hz) 720*480 15.73 SDTV ,DVD 480I 720*480 15.73 59.94 SDTV ,DVD 480I 720*480 31.47 SDTV 480P 720*480 31.47 59.94 SDTV 480P 1280*720 45.00 60.00 HDTV 720P 1280*720 44.96 59.94 HDTV 720P 1920*1080 33.75 60.00...
  • Page 9 Wooden Indi Wooden Stand Assy Type Attached ( detachable ) Size(W x D x H) Tilt Degree Tilt force Swivel Degree +30°(±1) / -30°(±1) Swivel Force 2.0 ~ 2.3 kgf Appearance General Refer to Standard of LG(55)G1-1020 - 9 -...

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 4. Gemstar VBI Micom Download These instructions are applied to all of the LCD TV, LA61B. 4-1. Preparation for Adjustment (1) As shown below, connect the MPLAB ICD2 equipment, PC and Digital Connector. 2. Notes (2) Turn on the MPLAB ICD2 POWER Supply.
  • Page 11 (4) Select "Programmer -> Connect". 5. POD Certificate Download 5-1. Preparation for Adjustment (1) Connect the MEMORY JIG and PC. (2) Turn on the JIG MAIN POWER SWITCH. (3) After turn on the PC and MONITOR, execute the ‘Certificate Downloader v1.4’ from the screen. 5-2.
  • Page 12 (5) After clicking ENTER, the ‘opens Private key' window 6-2. Preparation for Adjustments appears and select the Private key applied to the SET. (1) In case of with VBI Inserter(TES3): Signal uses Cable input The Private Key file name is on the Label of the Digital and set as below.
  • Page 13 (2) Preparation for Adjustments & 7. Cable Operation Confirmation Setting of Device (1) Confirm that the Cable Card is inserted in the slot. 1) Set devices as below and turn on the PC and JIG. (2) Enter the EZ adjust menu by pressing the Adjust key on 2) Open S/W for writing DDC (EDID data write &...
  • Page 14 (2) ADC 1080i Component2/RGB Adjustment EDID for RGB Check the connection Component2, RGB to the Test Equipment 00 FF FF FF FF FF FF 00 1E 6D 5D 9C 01 01 01 01 (MSPG-925FA : -> model : 223, pattern : 65) 10 00 10 01 03 18 73 41 96 0A CF 74 A3 57 4C B0 23 20 09 48 4C AF CE 00 01 01 01 01 01 01 01 01 01 01 (1) Select Component1 as the input with 100% Horizontal...
  • Page 15 11-2. Adjustment of White Balance Operate the Zero-calibration of the CA-210, then attach sensor to LCD module surface when you adjust. Manual adjustment is also possible by the following sequence. (1) HEAT RUN at least 30 minutes by pressing the Power only Key on the Service Remote Control and adjust.

  • Page 16: Svc Remocon

    SVC REMOCON To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function. MUTE To check TV screen image easily.

  • Page 17: Video Trouble Shooting&Block Diagram

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  • Page 40: Audio Trouble Shooting&Block Diagram

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  • Page 51: Exploded View

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  • Page 52: Exploded View Parts List

    Base Assembly, STAND 47LB1R-ZH(CKD) LP62H BLACK 3043900027A Base Assembly, 47LB1 . . EBR30403401 PCB Assembly,Sub, SUB T.T LA61B 47LB1DA-UB ALL CONTROL KEY TOTAL ASSY EBR30403501 PCB Assembly,Sub, SUB T.T LA61B 47LB1DA-UB ALL INDEX TOTAL ASSY AGU30990804 Plate Assembly, ASSY METAL MAIN FRAME(47LB1,UB,CKD)

  • Page 53: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip)
  • Page 54 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1116 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1380 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1117 0CC180CK41A C1608C0G1H180JT 18pF 5% 50V C1381 0CK104CK56A...
  • Page 55 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C3029 0CK104CK56A 0603B104K500CT 100nF 10% 50 C426 0CK104CK56A 0603B104K500CT 100nF 10% 50 C303 0CK104CK56A 0603B104K500CT 100nF 10% 50 C427 0CK104CK56A...
  • Page 56 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C533 0CK104CK56A 0603B104K500CT 100nF 10% 50 C7039 0CK104CK56A 0603B104K500CT 100nF 10% 50 C536 0CK104CK56A 0603B104K500CT 100nF 10% 50 C704 0CK104CK56A...
  • Page 57 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C792 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1013 0CC470CK41A C1608C0G1H470JT 47pF 5% 50V C793 0CK104CK56A 0603B104K500CT 100nF 10% 50 C102 0CK104CK56A...
  • Page 58 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C511 0CK104CK56A 0603B104K500CT 100nF 10% 50 IC603 0IPRP00696A MST3361M-LF-110 3.3V_2.5V 0 C517 0CK104CK56A 0603B104K500CT 100nF 10% 50 IC203 0IMCRCY002A CY2309SXC-1HT 3TO3.6V - - -...
  • Page 59 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION B200 0LCML00003B MLB-201209-0120P-N2 120OHM L1304 0LCML00020B MLI-201209-6R8K 6.8UH 10% 0 L1100 0LCML00003B MLB-201209-0120P-N2 120OHM L1305 0LCML00020B MLI-201209-6R8K 6.8UH 10% 0...
  • Page 60 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION AR504 0RJ0332C687 RCA86TRJ33R0 33OHM 5% 1/16W R1128 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W AR505 0RJ0332C687 RCA86TRJ33R0 33OHM 5% 1/16W R1129 0RJ0332D677...
  • Page 61 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R147 0RJ2201D677 MCR03EZPJ222 2.2KOHM 5% 1/1 R430 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W R149 0RJ2201D677 MCR03EZPJ222 2.2KOHM 5% 1/1 R431 0RJ0752D677...
  • Page 62 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R818 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1207 0RJ5101D677 MCR03EZPJ512 5.1KOHM 5% 1/1 R825 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1208 0RJ3002D677...
  • Page 63 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R141 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R239 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R143 0RJ2201D677 MCR03EZPJ222 2.2KOHM 5% 1/1 R240 0RJ0222D677...
  • Page 64 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R408 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R656 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R409 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R657 0RJ0332D677...
  • Page 65 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R834 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W C116 0CE227WF6DC MVK8.0TP16VC220M 220uF 20% R836 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W C117 0CE227WF6DC MVK8.0TP16VC220M 220uF 20% R837...
  • Page 66 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C102 0CK474CH94A 0603F474Z250CT 470nF -20TO+ C406 0CC102CK41A C1608C0G1H102JT 1nF 5% 50V C103 0CC101CK41A C1608C0G1H101JT 100pF 5% 50 C407 0CC101CK41A C1608C0G1H101JT 100pF 5% 50...
  • Page 67 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C446 0CK333CK56A C1608X7R1H333KT 33nF 10% 50 L303 6140VB0004B LN-15A1 26uH AC500V 5MA 12X C447 0CK333CK56A C1608X7R1H333KT 33nF 10% 50 L304...
  • Page 68 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q105 0TRIY80001A 2SC3052 NPN 6V 50V 50V 200M R274 0RJ1501D677 MCR03EZPJ152 1.5KOHM 5% 1/1 Q106 0TRIY80001A 2SC3052 NPN 6V 50V 50V 200M...
  • Page 69 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R629 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R248 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R630 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R249 0RJ2200D677...
  • Page 70 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R546 0RJ2200D677 MCR03EZPJ221 220OHM 5% 1/10 C488 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16 R550 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 C490 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16...
  • Page 71 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C150 0CK103CK56A 0603B103K500CT 10nF 10% 50V C418 0CK104CK56A 0603B104K500CT 100nF 10% 50 C152 0CK104CK56A 0603B104K500CT 100nF 10% 50 C419 0CK104CK56A...
  • Page 72 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION AR138 0RJ0332C605 RCA86TRJ33R0 33OHM 5% 1/10W R1121 0RJ0512D677 MCR03EZPJ510 51OHM 5% 1/10W AR139 0RJ0332C605 RCA86TRJ33R0 33OHM 5% 1/10W R1122 0RJ0512D677...
  • Page 73 DATE: 2006. 10. 09. DATE: 2006. 10. 09. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION SIDE BOARD R405 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 C100 0CH4101K416 C2012C0G1H101JT 100pF 5% 50 OTHERs C101 0CH4101K416...
  • Page 79 Oct, 2006 P/NO : MFL30105552 Printed in Korea...

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