LG FLATRON L2320A Service Manual
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LG FLATRON L2320A Service Manual

LG FLATRON L2320A Service Manual

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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CL-46
MODEL:
(
) **Same model for SVC
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
L2320A
Website:http://biz.LGservice.com
L2320A (L2320AL-AL**A)
Internal Use Only

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Summary of Contents for LG FLATRON L2320A

  • Page 1: Color Monitor

    Internal Use Only Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-46 MODEL: L2320A (L2320AL-AL**A) ) **Same model for SVC CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. L2320A...

  • Page 2: Table Of Contents

    : DC 18.5V 4.5A, DC5V 0.5A Media station Input : AC 100~240V, 50/60Hz , 1.5A Output : DC 18.5V 5.0A, DC 5V 0.8A LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 2 - Only for training and service purposes...
  • Page 3 (return for +5V, H. Sync. and V. Sync.) T. M. D. S. (Transition Minimized Differential Signaling) C1~C5 : DVI-I only LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 3 - Only for training and service purposes...

  • Page 4: Precautions

    CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 4 - Only for training and service purposes...

  • Page 5: Timing Chart

    1200 75Hz 74.556 2592 1920 1920x1200 193.25 59.885 1245 1200 60Hz 1~19 : D-SUB, 1~17 : DVI-I, DVI-D: 1~15 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 5 - Only for training and service purposes...

  • Page 6: Operating Instructions

    8. HDTV(YPbPr) Input ports - 720p/1080i 9. Connect the power cord 10. Power cut-off switch of the monitor 11. DVD(YPbPr), HDTV(YPbPr) Audio(L/R) Input ports LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...

  • Page 7: Front Control Panel

    MENU button and VOL.+ button for 5 seconds: the message “CONTROLS UNLOCKED” will appear. selecting SWAP on the remote control. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 7 - Only for training and service purposes...

  • Page 8: Wiring Diagram

    WIRING DIAGRAM(Media Station) Connector Ass’y P/N: FAN P/N: 6631T20010D 5900T02001A J704 Connector Ass’y P/N: 6631T20010D J702 J601 Connector Ass’y P/N: 6631T20022E LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...

  • Page 9: Block Diagram

    .. ) SPIN( .. ) .. ) MPINA ( MPINA ( MPINB( .. ) D-SUB DVI-I DVI-D Display Output LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 9 - Only for training and service purposes...

  • Page 10: Description Of Block Diagram

    8bits digital signal by this IC(U14) And send the Digital video signal to MX88L285(U201). U14 makes clock for MX88L285(U201) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...

  • Page 11: Adjustment

    ADJUSTMENT Windows EDID V1.0 User Manual 2. EDID Read & Write 1) Run WinEDID.exe Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don’t need setup Windows 2000, XP => Need to Port Setup. This program is available to LCD Monitor only. 1.
  • Page 12 Power LED 74LS06 4.7K 74LS06 ST Switch V-Sync On/Off Switch DVI-D Connector (Switch must be ON.) Figure 1. Cable Connection LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...

  • Page 13: Troubleshooting Guide

    Main B’d : Cable connection U3,U4,U43,U44,U12 *Check the B’d to B’d AV B’d : U601,U302 connection Audio B’d : U3 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 13 - Only for training and service purposes...
  • Page 14 - Y/Pb/Pr Jack check Replace the Soldering Error *Check the other Device U201(Scaler) or check the - U26,U27(SDRAM) oscillator(X6) - U2,U17(TMDS Receiver) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...
  • Page 15 Data Pass Check U2,U17(Sil161B) - H/V Sync - Output Clock - Output Data - Power Down Ctrl Signal (TMDSRX*-PDN) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - Only for training and service purposes...
  • Page 16 *In/Out H/V Sync *Output Data *Replace Device Pass Power S/W off and on after remove the Input signal cable LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...
  • Page 17 U302(FLI2310) Fail :U303, U304 *S2310-RESET *In/Out H/V Sync *Replace Device *Output Data Pass Check the Input Jack and Cable LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - Only for training and service purposes...
  • Page 18 U3(Pin#21) .U3 Pin#24, 25, 27, 28 Buffer circuit Fail Pass Replace the U3 (MSP3420G) Check the Oscillator(X3) Pass LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...

  • Page 19: Printed Circuit Board

    R409 R126 C401 R125 C400 R407 R124 R406 R324 R123 R53 R54 C399 R333 R175 C161 C167 C169 C163 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 19 - Only for training and service purposes...
  • Page 20 C555 C538 C571 R492 R490 R441 R491 C180 C181 C183 C182 C263 C257 R482 R483 C488 C323 C329 C414 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
  • Page 21 3. VIDEO & BRIDGE BOARD (Component Side) D903 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 21 - Only for training and service purposes...
  • Page 22 C319 R318 R317 C318 C343 C338 C323 C342 C340 C324 C337 C335 C331 C334 C333 C842 L781 C843 C841 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...

  • Page 23: Audio Board

    C249 ZD17 ZD16 6. CONTROL BOARD MODEL:L2320AL KEY MODEL:L2320AL POWER P/N :6870T639C15 P/N :6870T639C15 DATE :2003.06.05 DATE :2003.06.05 LED1 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 23 - Only for training and service purposes...

  • Page 24: Exploded View

    EXPLODED VIEW(DISPLAY) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...
  • Page 25 EXPLODED VIEW PARTS LIST(DISPLAY) Description Ref. No. Part No. CABINET ASSEMBLY, L2320AL BRAND 3090TKE002 . 3091TKE003B LCD(LIQUID CRYSTAL DISPLAY), LM230W01-A2P3 LG PHILPS TFT COLOR WUXGA 6304FLP066A BACK COVER ASSEMBLY, L2320AL 3808TKE002 OEM 3809TKE003B TILT SWIVEL ASSEMBLY, L2320AL . . 3043TKK118A...
  • Page 26 EXPLODED VIEW(MEDIA STATION) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...
  • Page 27 PWB(PCB) ASSEMBLY,VIDEO, L2320AL VIDEO TOTAL BRAND ALRDT 6871TVT358C PWB(PCB) ASSEMBLY,SUB, L2320AL SOUND TOTAL BRAND CL-46 6871TST386B METAL ASSEMBLY, REAR MEDIA 4951TKK122A LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 27 - Only for training and service purposes...

  • Page 28: Replacement Parts List

    39000PF 1608 50V 10% R/TP X7 0CC470CK41A 47PF 1608 50V 5% R/TP NP0 C111 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...
  • Page 29 100000PF 50V Z F 2012 R/TP C300 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R C579 0CH3104K946 100000PF 50V Z F 2012 R/TP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 29 - Only for training and service purposes...
  • Page 30 MMBD301LT1 TP MOTOROLA SOT23 0DS301109AA MMBD301LT1 TP MOTOROLA SOT23 6210TCE001S HU-1M2012-121 CERATECH 2012M 0DS301109AA MMBD301LT1 TP MOTOROLA SOT23 6210TCE001S HU-1M2012-121 CERATECH 2012M LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 30 - Only for training and service purposes...
  • Page 31 22 OHM 1/10 W 5% 1608 R/TP 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 31 - Only for training and service purposes...
  • Page 32 10 OHM 1/10 W 5% 1608 R/TP R153 0RJ0102D677 10 OHM 1/10 W 5% 1608 R/TP R402 0RJ0102D677 10 OHM 1/10 W 5% 1608 R/TP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...
  • Page 33 RCA SMART 47OHM 1/16 W 5% 32 RA18 0RHZTCZ001E RCA SMART 47OHM 1/16 W 5% 32 RA19 0RHZTCZ001E RCA SMART 47OHM 1/16 W 5% 32 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 33 - Only for training and service purposes...
  • Page 34 1000UF KMG 25V M FL TP5 C608 0CH3224K946 0.22UF 50V Z F 2012 R/TP C819 0CK103CK51A 0.01UF 1608 50V 10% R/TP B(Y LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...
  • Page 35 UDZ S 5.6B TP ROHM-K SOD323 C944 0CH3103K516 10000PF 50V 10% B(Y5P) 2012 ZD915 0DZ560009DA UDZ S 5.6B TP ROHM-K SOD323 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 35 - Only for training and service purposes...
  • Page 36 0 OHM 1/10 W 5% 1608 R/TP L901 6210TCE001A HB-1S2012-080JT CERATEC 2012 R332 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...
  • Page 37 RCA SMART 4.7KOHM 1/16 W 5% R817 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP R818 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 37 - Only for training and service purposes...
  • Page 38 2200PF 50V K B 2012 R/TP 0DZ560009DA UDZ S 5.6B TP ROHM-K SOD323 0CH8476F691 47UF 16V 20% 105STD (CYL) R/ LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...
  • Page 39 1K OHM 1/10 W 5% 1608 R/TP ZD16 0DZ360009EB UDZ 3.6B TP ROHM SOD323 200M R209 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 39 - Only for training and service purposes...
  • Page 40 470K OHM 1/10 W 5% 1608 R/TP R493 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP 6202TST003B HC-49/SM5H KONY CHIP 18.432M LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...

  • Page 41: Pin Configuration

    Single power supply. — NOTE: See the following page for diagrams of pin circuit types 1, 2, and 3. LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 41 - Only for training and service purposes...
  • Page 42 256 x 8 bits 512 x 8 bits Column Decoder Data Register and ACK Figure 2-1. S524A40X10/40X20/40X40 Block Diagram LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...
  • Page 43 RX 0+ Data Recovery CTL2 SYNC0 SYNC0 HSYN C RX 0- CTL3 RX C+ RX C- STAG_O UT BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 43 - Only for training and service purposes...
  • Page 44 PIN 1 REF BYPASS IDENTIFIER RMIDSCV SOGIN0 SOGIN1 AD9888 TOP VIEW (Not to Scale) BMIDSCV CKINV CLAMP PIN CONFIGURATION LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...
  • Page 45 PIXEL CLOCK CLOCK MUX2 GENERATOR COAST MUX3 POLARITY DETECT VSYNC0 VSYNCOUT VSYNC1 MUX5 ACTIVITY POLARITY MUX4 DETECT DETECT BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 45 - Only for training and service purposes...

  • Page 46: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...
  • Page 47 2. MEMORY LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 47 - Only for training and service purposes...
  • Page 48 3. DVI-I LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...
  • Page 49 4. D-SUB LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 49 - Only for training and service purposes...
  • Page 50 5. DTV1(ADD9883) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...
  • Page 51 6. DVI-D/DTV2 LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 51 - Only for training and service purposes...
  • Page 52 7. MICOM LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...
  • Page 53 8. TRANSMITTER LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 53 - Only for training and service purposes...
  • Page 54 9. POWER & B TO B CONNECTOR LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...
  • Page 55 10. KEY & POWER-KEY LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 55 - Only for training and service purposes...

  • Page 56: Audio Processor

    11. AUDIO PROCESSOR LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...
  • Page 57 12. AUDIO AMP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 57 - Only for training and service purposes...
  • Page 58 13. TELEXT & V-CHIP LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...
  • Page 59 14. AUDIO JACK LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 59 - Only for training and service purposes...
  • Page 60 15. USB LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...
  • Page 61 16. USB(BRIDGE B/D CONNECTOR) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 61 - Only for training and service purposes...
  • Page 62 17. VIDEO(VPC3230D) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 62 - Only for training and service purposes...
  • Page 63 18. VIDEO(FLI2310) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 63 - Only for training and service purposes...
  • Page 64 19. VIDEO(CONNECTOR) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...
  • Page 65 20. VIDEO(POWER) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 65 - Only for training and service purposes...
  • Page 66 21. VIDEO(B TO B CONNECTOR) LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...
  • Page 67 22. INTERFACE LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 67 - Only for training and service purposes...
  • Page 68 23. INTERFACE LGE Internal Use Only Copyright 2007 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...
  • Page 69 Jun. 2003 P/NO : 3828TSL096A Printed in Korea...

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L2320al-al**a

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