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LG 26LX1D-UA Service Manual
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LG 26LX1D-UA Service Manual

LG 26LX1D-UA Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : AL-04DA
MODEL : 26LX1D-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 26LX1D-UA

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : AL-04DA MODEL : 26LX1D-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

    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

    CABINET ASSEMBLY, DU-26LG10 BRAND 3090TKE024 CABINET ASSY 3091TKE032B CABINET ASSEMBLY, 26LX1D BRAND DU C/SKD 6304FLP190A LCD(LIQUID CRYSTAL DISPLAY), LC260WX2-SL03 LG PHILPS TFT COLOR IPS WIDE(16-9) 3809TKE029A BACK COVER ASSEMBLY, DU-26LG10 3808TKE024 BACK COVER ASSY 3809TKE029C BACK COVER ASSEMBLY, 26LX1D ML-051A 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: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COIL & CORE & & FILTER & INDUCTOR R104 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% L101 6210TCE001G HH-1M3216-501 CERATEC 3216M R105...
  • Page 23 381-204B 42PIN(1.78-15.24AMMON) R850 0RH4701D622 4.7K OHM 1 / 10 W 2012 5.00 TU402 6634D00010B TASA-H301P LG INNOTEK 75 OH R100 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP MAIN BOARD(Digital) R101 0RH3300D622 330 OHM 1 / 10 W 2012 5.00%...
  • Page 24 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1035 0CH3474H946 "0.47UF 25V 80%,-20% F(Y5V)" C116 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1037 0CH3222K516 2200PF 2012 50V 10% B(Y5P) C1160...
  • Page 25 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1320 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1648 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1322 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1649...
  • Page 26 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C307 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C429 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C308 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C430...
  • Page 27 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C510 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C679 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C511 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C685...
  • Page 28 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C796 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1063 0CK103CK51A 0.01UF 1608 50V 10% R/TP B( C797 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1064...
  • Page 29 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C231 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R C1207 0CH6561K416 560PF 2012 50V 5% NP0 R/TP C300 0CK103CK51A 0.01UF 1608 50V 10% R/TP B( C1210...
  • Page 30 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1019 0CE476SF6DC 47UF MVG 16V 20% SMD R/TP C605 0CE226VF6DC 22UF MV 16V 20% R/TP(SMD) S C102 0CE476SF6DC 47UF MVG 16V 20% SMD R/TP C609...
  • Page 31 0IMCRFA013A 74LCX244MTC FAIRCHILD 20P T IC401 0ICTMLG009C LGDT1102C HD2.3 LG IC SBGA- IC1202 0ISTL00024A "MC14053BDR2G,LF ON SEMI 16P" IC504 0ICTMLG013B LGDT1901B LG IC SSOP 24P TR IC205 0ISTLPH026A 74LVC14APW PHILIPS 14PIN TS IC902 0ICTMLG018B LGDP4411 IEP2 LG IC 208P LQ IC303 0ISTL00024A "MC14053BDR2G,LF ON SEMI 16P"...
  • Page 32 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L604 6210TCE001G HH-1M3216-501 CERATEC 3216M Q709 0TR150400BA CHIP 2SA1504S(ASY) BK KEC - L605 6210TCE001G HH-1M3216-501 CERATEC 3216M Q710 0TR150400BA CHIP 2SA1504S(ASY) BK KEC - L606...
  • Page 33 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION AR303 0RHZTCZ001D RCA SMART 22OHM 1/16 W 5% 3 R1033 0RH0432D622 43 OHM 1 / 10 W 2012 5.00% AR401 0RHZTCZ001D RCA SMART 22OHM 1/16 W 5% 3 R1034...
  • Page 34 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1212 0RH3303D622 330K OHM 1 / 10 W 2012 5.00 R1408 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R1213 0RH2200D622 220 OHM 1 / 10 W 2012 5.00% R1410...
  • Page 35 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R406 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% R656 0RH4701D622 4.7K OHM 1 / 10 W 2012 5.00 R407 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% R665...
  • Page 36 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R835 0RH0682D622 68 OHM 1 / 10 W 2012 5.00% R103 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/T R836 0RH3300D622 330 OHM 1 / 10 W 2012 5.00% R1035...
  • Page 37 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1166 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R140 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/T R1167 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP...
  • Page 38 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R254 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP R348 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP R255 0RJ0752D677 75 OHM 1/10 W 5% 1608 R/TP...
  • Page 39 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R705 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP R861 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP R706 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP...
  • Page 40 DESCRIPTION / SPECIFICATION CONTROL BOARD R3136 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D SW1101 140-313B TACT 2LEAD 160G(TA) LG C&D R3137 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D SW1102 140-313B TACT 2LEAD 160G(TA) LG C&D R3138 0RH1001D622 1K OHM 1 / 10 W 2012 5.00%...
  • Page 41 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C2018 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C2026 0CE476VF6DC 47UF MV 16V 20% R/TP(SMD) S C2019 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C2028...
  • Page 42 DATE: 2005. 06. 10. DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C660 0CH3105H946 "1UF 2012 25V 80%,-20% F(Y5V" C664 0CK102CK56A 1000PF 1608 50V 0.1 R/TP X7 C670 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C665...
  • Page 43 DATE: 2005. 06. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R662 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP KEY BOARD R1101 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R1102 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R1103 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R1104...
  • Page 48 Jun, 2005 P/NO : 38289S0004D Printed in Korea...

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