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LG 47LB5DF Service Manual

Lg lcd tv service manual
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See also: Owner's Manual
LCD TV

SERVICE MANUAL

CHASSIS : LA73A
MODEL : 47LB5DF
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
47LB5DF-UC

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Summary of Contents for LG 47LB5DF

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : LA73A MODEL : 47LB5DF 47LB5DF-UC 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 ...............13 TROUBLE SHOOTING & BLOCK DIAGRAM ........19 EXPLODED VIEW .................. 45 REPLACEMENT PARTS LIST ............... 47 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

    5) CADTV : 01~135 Input Voltage 1) AC 100 ~ 240V 50/60Hz Market NORTH AMERICA Screen Size 47 inch Wide(1920 x 1080) 47LB5DF-UC 42 inch Wide(1920 x 1080) 42LB5DF-UC 37 inch Wide(1920 x 1080) 37LB5DF-UC Aspect Ratio 16:9 Tuning System...
  • Page 7 5. Chrominance & Luminance Specification Item Unit Remark White peak brightness cd/m 47LB5DF-UC cd/m 42LB5DF-UC cd/m 37LB5DF-UC Contrast ratio cd/m Brightness uniformity Full white Color coordinate 0.638 +/- 0.03 0.340 +/- 0.03 GREEN 0.279 +/- 0.03 0.611 +/- 0.03 BLUE 0.146...
  • Page 8 Peak & average Brightness & Contrast measure standard specification - White Peak brightness measure specification 1) In non-impressed condition, measure peak brightness displayable as much as possible LCD module. 2) Measuring instrument: CA-110 or a sort of Color Analyzer. 3) Pattern Generator : VG-828 or a sort of digital pattern generator (displayable Full White & 1/25 White Window pattern) 4) Measure condition - Test pattern: in center, 1/5(H)x1/5(V) of Window Pattern (white pattern in non-impressed condition) - SET condition : Contrast &...
  • Page 9 6. Component Video Input (Y, P Specification Remark 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 10 8. HDMI Input (PC/DTV) Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Remark 640*350 31.468 70.09 25.17 720*400 31.469 70.08 28.32 640*480 31.469 59.94 25.17 VESA(VGA) 640*480 37.861 72.80 31.50 VESA(VGA) 640*480 37.500 75.00 31.50 VESA(VGA) 800*600 35.156 56.25 36.00 VESA(SVGA) 800*600 37.879 60.31 40.00 VESA(SVGA)
  • Page 11 9. General specifications 9-1. 47" LCD MODULE Item Specification Unit Remark Active Screen Size 46.96 inches(1192.87mm) mm Outline dimension 1096.0(H)x640.0(V)x481(D) Pixel Pitch 0.5415x0.5415x RGB Pixel Format 1920 horiz by 1080 vert. RGB Stripe arrangement Color Depth 8-bit / 16.7M Color Luminance, White 550 cd/m2 Power Consumption...
  • Page 12 10. Mechanical specification 10-1. 47LB5DF-UC Item Content Unit Remark Product Widt(W) Length(D) Height(H) Dimension Before Packing 1144.5 825.6 With Stant After Packing 1230 Product Only SET 37.5 With BOX 44.7 10-2. 42LB5DF-UC Item Content Unit Remark Product Widt(W) Length(D) Height(H)

  • Page 13: Adjustment Instruction

    9. Customer Menu Setup (Shipment Condition) Item Condition Remark Input Mode TV02CH Volume Level Mute Aspect Ratio 16:9 Video EZ Picture Daylight Contrast Brightness Color Sharpness Tint Color-temperature Cool Auto(On) Advanced Cinema3:2 Mode(Off) Black Level(RF,HDMI=>Low),(AV=>High)( RGB-PC,Component=>Disable) Audio Audio Language EZ Sound Normal Balance Bass...
  • Page 14 ADJUSTMENT INSTRUCTION 1. Scope 4. Adjustment method using RS-232C These instructions are applied to all of the LCD TV, LA73A Adjust the 3 board adjustment items of 3 using the RS-232C Chassis. according to the "4.1.2 Adjustment order". 4-1. Necessary details before adjustment 2.
  • Page 15 Rev button O Check RS-232C operation In this case, first press the of Video Signal Press the Instart of adjustment R/C to enter the 7.Baud Rate Generator (Master), to generate the white pattern to be displayed menu and set the Baud Rate to 115200 to check the 232-C from the left.
  • Page 16 5.3 480i Comp1, 1080p Comp1/RGB adjustment 6. EDID(The Extended Display method Identification Data)/DDC (Display Data Channel) Download A. ADC 480i component1 adjustment - Check Component1 connected condition from the using device. 6.1 Introduction - (MSPG-925FA : (model :209 , pattern :65 ) This has been established by VESA and is the function B.
  • Page 17 6.3 EDID Data for LA73A - 17 -...

  • Page 18: White Balance Adjustment

    7. White Balance adjustment A. Connect the set according to the internal pattern or HDMI input in accordance with 4.3.2 measuring device connection diagram. B. Set the Baud Rate of RS-232C to 115200. It is set to 115200 7-1. Using device as default.

  • Page 19: Troubleshooting & Block Diagram

    TROUBLESHOOTING & BLOCK DIAGRAM Cable Air - 19 -...
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  • Page 45: Exploded View

    EXPLODED VIEW - 45 -...

  • Page 46: Exploded View Parts List

    Speaker,Tweeter, EN10D-6714 ND 10W 8OHM 82DB 0HZ 68 X 23 X 22.7 LUG KOREA TOPTONE EAJ35565901 LCD,Module-TFT, LC470WU1-SLB2 FULLHD 47INCH 1920X1080 550CD COLOR 72% 16/9 800:1(basic) DCR(1600:1) A-TW Pol. 12000K P7 LG PHILIPS LCD ABJ32083303 Cabinet Assembly, 47LB5 LA73A 47" XG569 CABINET ASS'Y FOR SKD ACQ32083406 Cover Assembly, 47LB5 LA73A 47"...

  • Page 47: Replacement Parts List

    REPLACEMENT PARTS LIST DATE: 2007. 03. 24. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION ACCESSORY C408 0CE476WF6DC "Capacitor,AL,Chip" MVK6.3TP16VC47M 47uF 20 C453 0CE106WFKDC "Capacitor,AL,Chip" MVK4.0TP16VC10M 10uF 20 MFL35930210 "Manual,Owners" PRINTING USER LA73A BRA C466 0CE476WF6DC "Capacitor,AL,Chip"...
  • Page 48 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C670 0CE105WK6DC "Capacitor,AL,Chip" MVK4.0TP50VC1M 1uF 20% C2139 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C700 0CE105WK6DC "Capacitor,AL,Chip" MVK4.0TP50VC1M 1uF 20% C214 EAE33970001 "Capacitor,Ceramic,Chip" CS1005X5R105K6R3NR 1uF C701 EAE30840301 "Capacitor,AL,Chip" 10SVPC68M 68uF 20% 10V C2140 0CK104BF56A "Capacitor,Ceramic,Chip"...
  • Page 49 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C2196 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C231 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C2197 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C232 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C2198 0CK104BF56A "Capacitor,Ceramic,Chip"...
  • Page 50 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C349 0CC221BKFAA "Capacitor,Ceramic,Chip" C1005C0G1H221JT 220pF 5 C426 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C350 0CC221BKFAA "Capacitor,Ceramic,Chip" C1005C0G1H221JT 220pF 5 C427 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C351 0CH5470K618 "Capacitor,Ceramic,Chip"...
  • Page 51 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C5019 0CC560CK41A "Capacitor,Ceramic,Chip" C1608C0G1H560JT 56pF 5% C566 0CK223CK56A "Capacitor,Ceramic,Chip" UMK107JB223KA-T 22nF 10 C5020 0CK103CK56A "Capacitor,Ceramic,Chip" 0603B103K500CT 10nF 10% C567 0CK223CK56A "Capacitor,Ceramic,Chip" UMK107JB223KA-T 22nF 10 C5021 0CK474CH94A "Capacitor,Ceramic,Chip"...
  • Page 52 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C621 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C710 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 10 C622 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 10 C712 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 10 C623 0CK104BF56A "Capacitor,Ceramic,Chip"...
  • Page 53 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COILs & FILTERs & INDUCTORs ZD419 0DZ560009DA "Diode,Zener" UDZS5.6B 5.6V 5.49TO5.7 ZD501 0DZ560009DA "Diode,Zener" UDZS5.6B 5.6V 5.49TO5.7 EAM36140902 "Filter,AC Line" IF-N06AEWL2 1.3mH 250VA ZD502 0DZRM00248A "Diode,Zener" RLZ8.2B 8.2V 7.78TO8.19 B101 0LCML00003B "Filter,Bead"...
  • Page 54 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L610 0LCML00003B "Filter,Bead" MLB-201209-0120P-N2 120 L624 0LCML00020B "Inductor,Multilayer,Chip" MLI-201209-6R8K 6.8UH 1 L611 0LCML00003B "Filter,Bead" MLB-201209-0120P-N2 120 L700 0LC2220101A "Inductor,Multilayer,Chip" FI-B2012-222KJT 2.2UH 1 L612 6200J00005N "Filter,Bead" HH-1M2012-121JT(H:1mm) L701 0LC2220101A "Inductor,Multilayer,Chip"...
  • Page 55 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q511 0TR387500AA "TR,Bipolar" 2SC3875S(ALY) NPN 5V 60 R1022 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1/ Q512 0TR387500AA "TR,Bipolar" 2SC3875S(ALY) NPN 5V 60 R1023 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1/ Q513 0TR102009AM "TR,Bipolar"...
  • Page 56 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R155 0RJ0222C678 "Resistor,Chip" MCR01MZPJ220 22OHM 5% 1 R247 0RJ0182C478 "Resistor,Chip" MCR01MZPF180 18OHM 1% 1 R156 0RJ0222C678 "Resistor,Chip" MCR01MZPJ220 22OHM 5% 1 R248 0RJ0182C478 "Resistor,Chip" MCR01MZPF180 18OHM 1% 1 R160 0RJ0222C678 "Resistor,Chip"...
  • Page 57 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R321 0RJ2002C478 "Resistor,Chip" MCR01MZPF203 20KOHM 1% R4007 0RJ4702C678 "Resistor,Chip" MCR01MZPJ473 47KOHM 5% R322 0RJ1502C478 "Resistor,Chip" MCR01MZPF153 15KOHM 1% R4008 0RJ1003C678 "Resistor,Chip" MCR01MZPJ104 100KOHM 5% R323 0RJ1201C678 "Resistor,Chip"...
  • Page 58 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R405 0RJ3900C678 "Resistor,Chip" MCR01MZP5J391 390OHM 5% R4118 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1/ R4050 0RJ1001C678 "Resistor,Chip" MCR01MZPJ102 1KOHM 5% 1 R4119 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1/ R4050 0RJ4701C678 "Resistor,Chip"...
  • Page 59 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R439 0RJ1001C678 "Resistor,Chip" MCR01MZPJ102 1KOHM 5% 1 R5022 0RJ3302C678 "Resistor,Chip" MCR01MZPJ333 33KOHM 5% R440 0RJ1001C678 "Resistor,Chip" MCR01MZPJ102 1KOHM 5% 1 R5022 0RJ6801C678 "Resistor,Chip" MCR01MZPJ682 6.8KOHM 5% R441 0RJ0332C678 "Resistor,Chip"...
  • Page 60 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R543 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1/ R633 0RJ4701C678 "Resistor,Chip" MCR01MZPJ472 4.7KOHM 5% R559 0RJ0331D677 "Resistor,Chip" MCR03EZPJ3R3 3.3OHM 5% R635 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1/ R560 0RJ0331D677 "Resistor,Chip"...
  • Page 61 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R7087 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1/ X300 6202TST001E Crystal SX-1 24MHZ 30PPM(20PF) R712 0RJ0752C678 "Resistor,Chip" MCR01MZPJ750 75OHM 5% 1 X400 6202VDT002B Crystal SX-1 14.31818MHZ 30PPM( R713 0RJ0752C678 "Resistor,Chip"...
  • Page 62 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION P103 6602T20009L "Connector,Wafer" SMAW200-12P 12P 2.00MM P104 6602T25008B "Connector,Wafer" SMW250-03P 3P 2.50MM 1R P105 6602T20008D "Connector,Wafer" SMW200-05P 5P 2.00MM 1R P501 6602T25008C "Connector,Wafer" SMW250-04P 4P 2.50MM 1R P502 6602T25008B "Connector,Wafer"...
  • Page 65 Apr., 2007 P/NO : MFL35929309 Printed in Korea...

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