LG Flatron L1730SF (L1730SFN.A**MEP) Service Manual
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LG Flatron L1730SF (L1730SFN.A**MEP) Service Manual

LG Flatron L1730SF (L1730SFN.A**MEP) Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. :
LM57A
MODEL:
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
-
LightView
+
MENU
L1730SF (L1730SFN.A**MEP)
L1730SF (L1730SFKN.A**MEP)
SET/AUTO
Internal Use Only
Website:http://biz.LGservice.com

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Summary of Contents for LG Flatron L1730SF (L1730SFN.A**MEP)

  • Page 1 Internal Use Only Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM57A MODEL: L1730SF (L1730SFN.A**MEP) L1730SF (L1730SFKN.A**MEP) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. LightView SET/AUTO MENU...

  • Page 2: Table Of Contents

    : 30 ~ 83kHz Vertical : 56 ~ 75Hz 4. Max. Resolution Analog : 1280 x 1024 / 75Hz Copyright 2007 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Precautions

    CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. Copyright 2007 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    8. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last. Copyright 2007 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 IC. circuit board to prevent excessive component temperatures. Copyright 2007 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 Solder the overlapped area and clip off any excess jumper wire. Copyright 2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Timing Chart

    1280 x 1024 V(Lines) 60.02 1066 1024 H(Pixels) 135.0 79.976 1688 1280 1280 x 1024 V(Lines) 75.035 1066 1024 Copyright 2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Disassembly

    Disassemble inverter shield something thin. Disassemble the back cover from left side. Remove the 4 screws from each side of metal frame. Copyright 2007 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...

  • Page 9: Block Diagram

    BLOCK DIAGRAM Copyright 2007 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Copyright 2007 Lg Electronics. Inc. All Right Reserved

    BLOCK DIAGRAM-POWER Copyright 2007 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Description Of Block Diagram

    The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable. The controlled data of each modes is stored in EEPROM. Copyright 2007 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only...

  • Page 12: Lips Board Block Diagram

    This part function is to collect the any change from the DC output and feed back to the primary through photo transistor. Copyright 2007 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13: Adjustment

    Click “ Write” button c) Remove all default number d) Add 300-3FF e) Click Start button. f) Click Exit button. Copyright 2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Service Osd

    (110V/220V) 74LS06 Power LED 4.7K 74LS06 ST Switch V-Sync On/Off Switch (Switch must be ON.) Figure 1. Cable Connection Copyright 2007 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Troubleshooting Guide

    IS U201 PIN75 (3.3V) CHECK 3.3V LINE VOLTAGE ? CHECK U201 PIN 96 CHECK X-TAL PULSE CHECK U201 Waveforms U201-#96 Copyright 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 (CONTACT PROBE TO CAUTION LABEL. CAN YOU SEE PULSE AT YOUR SCOPE? REPLACE CCFL LAMP IN THE LCD MODULE Copyright 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 AT SIGNAL PINS? AT MODE 12? TROUBLE IN CABLE OR LCD MODULE Waveforms 2 U201-#28 V-SYNC U201-#96, 97 U201-#27 H-SYNC Copyright 2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 U201 PIN 27,28 CHECK H/V SYNC LINE SYNC PULSE ? TROUBLE IN U201 Waveforms 3 R443 V-Sync R442 H-Sync Copyright 2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Check Q101 Drain Trouble in Q101 Waveform Check D201, D202 Trouble in D201, D202 Voltage CHECK 5V, 12V Line Copyright 2007 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 If waveform is no problem Check Q303~Q308 Check U303, U304 Or Trouble in U303, U304 Drain waveform CHECK T301, T302 Copyright 2007 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...

  • Page 21: Wiring Diagram

    WIRING DIAGRAM (USB Type) 6631900109A 6631T20020Q EAD36175601 6631T20024C Copyright 2007 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 WIRING DIAGRAM (RS232C Type) 6631900109A 6631T20020Q EAD36175601 6631T20024C Copyright 2007 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...

  • Page 23: Exploded View

    EXPLODED VIEW Copyright 2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Exploded View Parts List

    Cover Assembly, L1730SFN . 17" ABS, SILVER SPRAY, F-engine 3091TKL156E Cover Assembly, L1730SFKN . 17" ABS, BLACK, F-engine EAJ32188801 LCD,Module-TFT, LM170E03-TLB3 DRIVER 17.0INCH 1280X1024 300CD COLOR 72% 5/4 800 VS 1 5MS, 160/160, 4LAMP, 2CH-LVDS LG PHILIPS LCD . 3809TKL068N Cover Assembly, L1730SFN , ABS, USB 3043TKK095E Base Assembly, L1511S .

  • Page 25: Replacement Parts List

    MCR03EZPJ391 390OHM 5% 1/10W 160 C440 0CK105CD56A C1608X7R1A105KT 1uF 10% 10V X7R R213 0RJ4700D677 MCR03EZPJ471 470OHM 5% 1/10W 160 Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...
  • Page 26 0TFVI80067A SI3865BDV(E3) N-CHANNEL MOSFET 8 X201 6212AA2004F HC-49/U 14.31818MHZ 30PPM(TXC) 1 CONTROL BOARD 140-058E THVV502GBC 1C1P 12VDC 0.05A HORI Copyright 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 26 - Only for training and service purposes...

  • Page 27: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER Copyright 2007 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 2. POWER & WAFER Copyright 2007 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
  • Page 29 3. CONTROL Copyright 2007 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
  • Page 30 May. 2007 P/NO : MFL38456748 Printed in Korea...

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Flatron l1730sf (l1730sfkn.a**mep)

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