LG 23LX1RV-MC Service Manual
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LG 23LX1RV-MC Service Manual

LG 23LX1RV-MC Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : ML-041D
MODEL : 23LX1RV-MC
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 23LX1RV-MC

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : ML-041D MODEL : 23LX1RV-MC 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 TROUBLE SHOOTING ................13 BLOCK DIAGRAM...................19 WIRING DIAGRAM ..................21 EXPLODED VIEW .................. 22 EXPLODED VIEW PARTS LIST ..............23 REPLACEMENT PARTS LIST ............... 24 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 2. After removing an electrical assembly equipped with ES manual and its supplements and addenda, read and follow the devices, place the assembly on a conductive surface such as SAFETY PRECAUTIONS on page 3 of this publication. aluminum foil, to prevent electrostatic charge buildup or NOTE: If unforeseen circumstances create conflict between the exposure of the assembly.
  • 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 This specification is applied to ML-041D chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature: 25°C ±...
  • Page 7 5.General Specification(Monitor) Item Specification Unit Remark Panel 23” TFT WXGA LCD Frequency range DVI-I input H:31 ~ 61KHz, V: 56 ~ 75Hz Control function 1) Contrast/ Brightness 2) H- Position/ V-Position 3) Tracking : Clock/Phase 4) Auto Configure 5) Reset Component Jack 1: Y 3: Pb...
  • Page 8 6.Optical Feature(LCD Module) Item Specification Remark Viewing Angle R/L, U/D 176,176 <CR 10> Luminance Luminance(cd/ ) Typical Variation MAX/MIN Contrast Ratio ALL white/All back CIE Color Coordinates WHITE Typ. 0.284 0.285 0.289 Typ. 0.295 0.293 0.303 Typ. Typ. Green Typ. Typ.
  • Page 9 8.Component Video Input(Y, P Resoluton H-freq(kHz) V-freqHz) Pixel clock Proposed 640 x 480 15.73 60.00 SDTV. DVD 480i RZ, RT, RM 640 x 480 15.63 59.94 SDTV. DVD 480i RZ, RT, RM 704 x 480 31.47 59.94 EDTV 480p RT, RM 720 x 576 15.625 50.00...

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 3.4 Video signal Gain/Offset Adjustment(Auto adjustment) - Execution of White Pattern during Heat Run over 30min This instruction is for the application to the LCD TV. - Connect to the LCD TV AV1 Scart input terminal with Patten Generator(MSPG-925FS).
  • Page 11 3.3 EDID (The Extended Display Identification Data) 3.4 HDCP (High-Bandwidth Digital Contents Protection) Setting - Connect D-Sub to DVI-I Cable to DVI-I Jack. 3.4.1 When transmitting HD video source of HD STB through - Confirm the pc display by inputting the Analog signal. DVI(Digital Visual Interface), HDCP function is to execute - After displayed, input the Analog EDID data.

  • Page 12: 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 13: Troubleshooting

    TROUBLESHOOTING No power :[A]Process (LED indicator off) No Power Check 24V or 12V (LED indicator off) Faill of Power B/D Pass Check Output of Change L3, L1300 Faill L3, L1300 Check Output of Change IC1300, IC4 or IC6 IC1300, IC4 or IC6 Faill Pass Change LED Assy...
  • Page 14 No Raster :[B]Process Check LED Status Repeat A PROCESS on display unit Faill Check L900,L901 Change L900,L901, L902,L903 L902,L903 Faill Pass Check the input/ Change IC901 Output of IC901 Faill Pass Check inverter Change inverter Connector or inverter connector or inverter Faill Pass Change panel link...
  • Page 15 No Raster on Component signal Repeat [A] Process Pass Check the signal of Change Q310,Q315,Q316 Q310,Q315,Q316 Faill :[C]Process Pass Re-soldering or Check the input/ Change the defect part Faill output of IC800 Check IC800 Pass Re-soldering or Check the input/ Change the defect part Faill output of IC600...
  • Page 16 No Raster on AV Signa No Raster on TV(RF) signal (AV1 S-Video) Check 5V,33V of TU1000, Repeat Check the output of Re-soldering of Change the [A] Process TU1000 Faill Faill defect part Pass Change Check the signal of Q317,Q318,Q308, Q317,Q318,Q308,Q313 Faill Q313 Pass...
  • Page 17 No Raster on DVD Signal Repeat [A] Process Pass Check the signal of Check P1200,P1202 or R1211,R1212,R1213 DVD Cable Faill Pass :[C]Process - 17 -...
  • Page 18 No Sound(RF,SIDE AV) No Sound(AV, COMP1,DVD,PC) Check the Change source input input source Faill Pass Re-soldering or Check the input/output Change the defect part Faill of IC1 Check X11 Pass Re-soldering or Check the input/ Change the defect part output of IC401 Faill Check IC403,X601 Pass...

  • Page 19: Block Diagram

    BLOCK DIAGRAM - 19 -...
  • Page 20 BLOCK DIAGRAM DESCRIPTION 1. Video Controller Unit & Display Data Conversion Unit The video controller unit receives the video signals inputted through the tuner, AV port, and converts them into an ITU656 signal through the microcomputer (VCTI) combined with the video decoder that integrates various functions in one chip.

  • Page 21: Wiring Diagram

    WIRING DIAGRAM 5P-6631T25023Y 4P-6631T25023X 12P-6631T25019K 12P-6631T20034Y 12P-6631T20034Z 9P-6631T20037K 10P-6631T20033F 14P-6631T20033E 30P-6631T11020N 5P-6631T20033T 30P-6631T20040A 3P-6631T20033D 30P-6631T20040B 3P-6631T20031G...

  • Page 22: Exploded View

    EXPLODED VIEW - 22 -...

  • Page 23: Exploded View Parts List

    PWB(PCB) ASSEMBLY,POWER, RZ-23LZ50 POWER TOTAL BRAND DVD(23LX1RV) or 6871TPT287E PWB(PCB) ASSEMBLY,POWER, RZ-23LZ50 POWER TOTAL BRAND AUTOBAHN 23" (PB-FREE) 3313TN2038A MAIN TOTAL ASSEMBLY, 23LX1RV-MC BRAND ML-041D MAIN CHASSIS ASSY 4951TKK174D METAL ASSEMBLY, REAR ML-041A RZ-23LZ50S 4951TKK174E METAL ASSEMBLY, REAR C/SKD ML-041A RZ-23LZ50S 6871TSTA01A PWB(PCB) ASSEMBLY,SUB, 23LX1R LOGO ASSY LED &...

  • Page 24: 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 25 DATE: 2005. 6. 28. DATE: 2005. 6. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C910 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C606 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
  • Page 26 DATE: 2005. 6. 28. DATE: 2005. 6. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C414 0CK222CK51A 2200PF 1608 50V 10% R/TP B( C850 0CK474CH94A "0.47UF 1608 25V 80%,-20% R/" C415 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R...
  • Page 27 DATE: 2005. 6. 28. DATE: 2005. 6. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C924 0CH6080K116 8PF 2012 50V 0.5 PF C0G R/T C454 0CH8476F691 47UF 16V 20% 105STD (CYL) R C925 0CH6080K116 8PF 2012 50V 0.5 PF C0G R/T...
  • Page 28 DATE: 2005. 6. 28. DATE: 2005. 6. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION ZD221 0DZ510009EE UDZ S 5.1B TP ROHM-K SOD323 6210TCE001G HH-1M3216-501 CERATEC 3216M ZD5001 0DZ510009EE UDZ S 5.1B TP ROHM-K SOD323 L301 6210TCE001A...
  • Page 29 DATE: 2005. 6. 28. DATE: 2005. 6. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TRANSISTOR R1107 0RH1502D622 15K OHM 1 / 10 W 2012 5.00% Q1000 0TR388109AA KTC3881 CHIP TP KEC - - R1108 0RH1001D622 1K OHM 1 / 10 W 2012 5.00%...
  • Page 30 DATE: 2005. 6. 28. DATE: 2005. 6. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R453 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R930 0RH3301D622 3.3K OHM 1 / 10 W 2012 5.00 R455 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D...
  • Page 31 DATE: 2005. 6. 28. DATE: 2005. 6. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R213 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R5002 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R214 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP...
  • Page 32 0RN2701F409 2.7K OHM 1/6 W 1.00% TA52 R904 0RJ0472D677 47 OHM 1/10 W 5% 1608 R/TP SW1700 140-313A TACT 2LEAD 100G(TA) LG C&D R906 0RJ0472D677 47 OHM 1/10 W 5% 1608 R/TP SW1701 140-313A TACT 2LEAD 100G(TA) LG C&D R908...
  • Page 33 *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION SW1704 140-313A TACT 2LEAD 100G(TA) LG C&D R3125 0RH1000D622 100 OHM 1 / 10 W 2012 5.00% SW1705 140-313A TACT 2LEAD 100G(TA) LG C&D R3126 0RH1000D622 100 OHM 1 / 10 W 2012 5.00%...
  • Page 36 Jun., 2005 P/NO : 38289S0004G Printed in Korea...

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