LG 26LX2D-UA Service Manual
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LG 26LX2D-UA Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : AL-04DA
MODEL : 26LX2D-UA
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 26LX2D-UA

  • Page 1 LCD TV SERVICE MANUAL CHASSIS : AL-04DA MODEL : 26LX2D-UA 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 ..................12 TROUBLE SHOOTING ................13 BLOCK DIAGRAM...................16 WIRING DIAGRAM ..................18 EXPLODED VIEW .................. 19 EXPLODED VIEW PARTS LIST ..............20 REPLACEMENT PARTS LIST ............... 21 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 X-RADIATION, Shock, Fire, or other Hazards.
  • Page 4 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. Application range 3. Test and Inspection Method This specification is applied to AL-04DA chassis. 3.1 Performance : LGE TV test method followed. 2. Requirement for Test 3.2 Demanded other specification.
  • Page 7 5. External Input Format Component Video Input (Y, C Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 640 x 480 15.73 SDTV ,DVD 480I 704 x 480 31.47 59.94 SDTV 480P 1280 x 720 45.00 60.00 HDTV 720P 1280 x 720 44.96 59.94 HDTV 720P 1920 x 1080...
  • Page 8 HDMI Input (PC/DTV) Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 640 x 480 31.469 59.94 25.17 VESA(VGA) 640 x 480 37.861 72.80 31.50 VESA(VGA) 640 x 480 37.500 75.00 31.50 VESA(VGA) 800 x 600 35.156 56.25 36.00 VESA(SVGA) 800 x 600 37.879 60.31 40.00...
  • Page 9 6. General spec(Module) Item Unit Remark Active Screen Size 600.53(diagonal) 26.005 inches Outline Dimension 626(H) x 373(V) x 44.1(D) Typ. Pixel Pitch 147.5 x 421.5 x RGB Pixel Format 1366(H)x768(V) RGB stripe arrangement Color Depth 8bit 16.7 Mbit Luminance ,White cd/m2 Center 1 point Viewing Angle (CR>10)

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Applicability 3. Full assembly process adjustment These specifications are applicable for all PDP TV models with an AL-04DA chassis that are manufactured by the <Precaution> Manufacturing Group of the Display Business Division, or Each PCB assembly must be checked using the check jig set any of its related manufacturers.
  • Page 11 3.2.4. Adjustment method 3.3.3. Manual White Balance Adjustment A) When entering the component, input 100% When adjusting after carrying out zero calibration for Horizontal Color Bar Pattern (HozTV30Bar) of the CA-100, the sensor should be tightly fixed on the supportable 720P mode, and select Component 1 LCD module surface.

  • Page 12: Svc Remocon

    SVC REMOCON FUNTION REAMARK 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.

  • Page 13: Troubleshooting

    TROUBLESHOOTING No power Check Connect the the condition of power connectors. Related connectors. FAIL PASS Check the power board Measure the Digital ref. voltage : stand_by voltage : D_board P1401 5 Power board FAIL ST_ 6V CN804 1th pin 24V FAIL PASS Replace Power_board...
  • Page 14 No raster Standby Check No power voltage check : Replace D_board (Go to No power) D_board P1401 5th 6V FAIL PASS PASS Measure Check No power Standby voltage : Replace A_board (Go to No power) A_board P804 7th 6V PASS FAIL PASS Measure...
  • Page 15 No sound Measure A_power board Check Sound supply: Replace trans output: A_board P804 #1, 18V D_power_board FAIL FAIL 18V at power_board CN803 #1 PASS PASS Check If A_board 18V is short-circuited. Replace A_board Resistance btween A_board FAIL P821 Pin No.2 and 3 infnity? Speaker output check :...

  • Page 16: Block Diagram

    BLOCK DIAGRAM - 16 -...
  • Page 17 BLOCK DIAGRAM DESCRIPTION In this system there are 2 tuners - ATSC/NTSC tuner(TDVS-H701P) and NTSC-only tuner.(TAFM-H103P) So it is impossible to have a digital (main)/digital (sub) PIP. CXA2181Q is the AV switch for the component signals and CXA2069Q is the AV switch for the composite signals. The audio signals which separated by CXA2069 are sent to MSP4440.

  • Page 18: Wiring Diagram

    - 18 -...

  • Page 19: Exploded View

    - 19 -...

  • Page 20: Exploded View Parts List

    Cover Assembly, 26LX2D BRAND DU SET AL-04DA 3091TKE039C Cover Assembly, 26LX2D BRAND DU C/SKD 6304FLP190A LCD,Module-TFT, LC260WX2-SL03 DRIVER 26.0INCH 1366X768 500CD COLOR - - 600VS1 - LG PHILIPS LCD 3809TKE029H Cover Assembly, 26LX1D-UA AL-04DA NO SPRAY 3809TKE029K Cover Assembly, 26LX1D-UA NON NO SPRAY,C/SKD...

  • Page 21: 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 22 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COIL & CORE & & FILTER & INDUCTOR RESISTORs L101 6210TCE001G HH-1M3216-501JT 500OHM 3.2X R102 0RH1000D622 MCR10EZHJ101 100OHM 5% 1/8W L203...
  • Page 23 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R245 0RH0822D622 MCR10EZHJ820 82OHM 5% 1/8W R151 0RH4702D622 MCR10EZHJ473 47KOHM 5% 1/8W R247 0RH0222D622 MCR10EZHJ220 22OHM 5% 1/8W R153 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10...
  • Page 24 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1138 0CE476SF6DC VMV476M016S0ANC010 47uF 20% C713 0CH8226F691 MVK5.0TP16VC22M 22uF 20% 16 C1188 0CE476SF6DC VMV476M016S0ANC010 47uF 20% C715 0CH8226F691 MVK5.0TP16VC22M 22uF 20% 16 C1190...
  • Page 25 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C104 0CH3104K566 0805B104K500CT 100nF 10% 50 C1164 0CH3104K566 0805B104K500CT 100nF 10% 50 C1041 0CH3474H946 C2012Y5V1E474ZT 470nF -20TO C1165 0CH3104K566 0805B104K500CT 100nF 10% 50 C1042...
  • Page 26 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1315 0CH3104K566 0805B104K500CT 100nF 10% 50 C1635 0CH3104K566 0805B104K500CT 100nF 10% 50 C1317 0CH3104K566 0805B104K500CT 100nF 10% 50 C1638 0CH3104K566 0805B104K500CT 100nF 10% 50 C1319...
  • Page 27 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C236 0CH3104K566 0805B104K500CT 100nF 10% 50 C419 0CH3104K566 0805B104K500CT 100nF 10% 50 C237 0CH3104K566 0805B104K500CT 100nF 10% 50 C420 0CH3104K566 0805B104K500CT 100nF 10% 50 C238...
  • Page 28 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C487 0CH3104K566 0805B104K500CT 100nF 10% 50 C639 0CH3104K566 0805B104K500CT 100nF 10% 50 C500 0CH3104K566 0805B104K500CT 100nF 10% 50 C640 0CH3104K566 0805B104K500CT 100nF 10% 50 C501...
  • Page 29 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C764 0CH3104K566 0805B104K500CT 100nF 10% 50 C930 0CH3104K566 0805B104K500CT 100nF 10% 50 C772 0CH3104K566 0805B104K500CT 100nF 10% 50 C931 0CH3104K566 0805B104K500CT 100nF 10% 50 C773...
  • Page 30 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1227 0CC180CK41A C1608C0G1H180JT 18pF 5% 50V C560 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1228 0CC180CK41A C1608C0G1H180JT 18pF 5% 50V C561 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1229...
  • Page 31 0IPRPNE008A "UPD64011BGM-8ED-A 3VTO3.6V," IC706 0IPRPNE008A "UPD64011BGM-8ED-A 3VTO3.6V," IC202 0IZZTSZ766A 26LX2D-UA FLASH 48P IC401 0ICTMLG009C "LGDT1102C HD2.3 3VTO3.6V,1." IC203 0IZZTSZ767A 26LX2D-UA FLASH 48P 2 IC804 0IMCRSO025A CXA2181Q 4.75VTO5.25V - 1.6 IC209 0IZZTSZ768A 26LX2D-UA AUTODEMO 48P IC902 0ICTMLG018B "LGDP4411 3VTO3.6V,1.62VTO1." IC210 0IZZTSZ769A...
  • Page 32 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L708 6210TCE001G HH-1M3216-501JT 500OHM 3.2X Q704 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50 L709 6210TCE001G HH-1M3216-501JT 500OHM 3.2X Q708 0TR150400BA 2SA1504S(ASY) PNP -5V -50V L710...
  • Page 33 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION AR401 0RJ0222C687 RCA86TRJ22R0 22OHM 5% 1/16W R1034 0RH0432D622 MCR10EZHJ430 43OHM 5% 1/8W AR402 0RJ0222C687 RCA86TRJ22R0 22OHM 5% 1/16W R1041 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W...
  • Page 34 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1213 0RH2200D622 MCR10EZHJ221 220OHM 5% 1/8W R1410 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R1214 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R1601 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2...
  • Page 35 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R407 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W R665 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W R408 0RH0222D622 MCR10EZHJ220 22OHM 5% 1/8W R667 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R409...
  • Page 36 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R836 0RH3300D622 MCR10EZHJ331 330OHM 5% 1/8W R1035 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R837 0RH3300D622 MCR10EZHJ331 330OHM 5% 1/8W R1036 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W...
  • Page 37 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1167 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1401 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R117 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R1402 0RJ2201D677...
  • Page 38 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R255 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W R349 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R256 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W R356 0RJ1002D677...
  • Page 39 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R706 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R862 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R707 0RJ2202D677 MCR03EZPJ223 22KOHM 5% 1/10 R865 0RJ4700D677...
  • Page 40 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION SW1104 140-313B KPT-1115AM 1C1P 12VDC 0.05A R3128 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 SW1105 140-313B KPT-1115AM 1C1P 12VDC 0.05A R3129 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2...
  • Page 41 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TUNER BOARD TU2002 6700NC0001B TAEU-H018P NTSC 67.25HZTO13 C2004 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50 TU2101 6700NF0019C TAFM-H109P NTSC-M/US 55.25H C2007 0CH3104K566 0805B104K500CT 100nF 10% 50 C2003...
  • Page 42 DATE: 2006. 10. 10. DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C644 0CH3104K566 0805B104K500CT 100nF 10% 50 C646 0CH8106J611 MV5.0TP35VC10M 10uF 20% 35V C645 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50 C650 0CE336VF6DC VGV336M016S0ANE010 33uF 20% C647...
  • Page 43 DATE: 2006. 10. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R654 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R655 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10 R658 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R659 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R660 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R661 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W...
  • Page 48 Sep, 2006 P/NO : MFL37022701 Printed in Korea...

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