LG Flatron L1730B Service Manual

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Service Guide Specification
Service Guide Specification
1.
Model Description
MODEL
L1730BSFTM
SUFFIX
ALAUG
2.
Printing Specification
1. Trim Size (Format) :
2. Printing Colors
• Cover :
LG COLORS
• Inside :
Black
3. Stock (Paper)
Snow White 150 g/   
• Cover :
Snow White 100 g/   
• Inside :
4. Printing Method :
5. Bindery :
6. Language :
7. Number of pages :
3.
Special Instructions
(1) Origin Notification
* LGEDI : Printed in Indonesia
* LGESP : Printed in Brazil
* LGENT : Printed in China
4.
Changes
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1
REV.
MM/DD/YY
NO.
BRAND
Product Name
215mm x 280 mm
Saddle stitch
English
32
( Including blank 3page)
* LGEWA : Printed in U.K.
* LGEMX : Printed in Mexico
* LGEIL : Printed in India
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FLATRON L1730B
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Part No.
3828TSL095S
CONTENTS
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Summary of Contents for LG Flatron L1730B

  • Page 1 9 9 9 9 9 9 9 9 Service Guide Specification Model Description MODEL L1730BSFTM BRAND Part No. 3828TSL095S SUFFIX FLATRON L1730B ALAUG Product Name Printing Specification 1. Trim Size (Format) : 215mm x 280 mm 2. Printing Colors • Cover : LG COLORS •...
  • Page 2 D D D D Pagination sheet Pagination sheet Front English English English English English Cover Cover Inside …. ….. Blank Rear English English English English Rear Cover Inside Cover Blank Blank...
  • Page 3 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-64 MODEL: L1730B (L1730BSFTM-AL**G) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU LightView SET/AUTO...
  • Page 4 Blank Page...
  • Page 5: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 DESCRIPTION OF BLOCK DIAGRAM ....13 PRECAUTIONS ............4 ADJUSTMENT ............15 SERVICE PRECAUTIONS ........5 TROUBLESHOOTING GUIDE ......17 TIMING CHART ............8 EXPLODED VIEW...........21 DISASSEMBLY ............9 REPLACEMENT PARTS LIST .......23 WIRING DIAGRAM ..........11 BLOCK DIAGRAM ..........
  • Page 6: Signal Connector Pin Assignment

    Signal Connector Pin Assignment • DVI-D Connector Signal (DVI-D) Signal (DVI-D) T. M. D. S. Data2- Hot Plug Detect T. M. D. S. Data2+ T. M. D. S. Data0- T. M. D. S. Data2/4 Shield T. M. D. S. Data0+ T.
  • Page 7: Precautions

    PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or marked on the schematic diagram and the inverter circuit, must disconnect the AC adapter...
  • Page 8: Service Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this 9. Use with this receiver only the test fixtures specified in service manual and its supplements and addenda, read this service manual. and follow the SAFETY PRECAUTIONS on page 3 of this CAUTION: Do not connect the test fixture ground strap publication.
  • Page 9 General Soldering Guidelines Replacement 1. Use a grounded-tip, low-wattage soldering iron and 1. Carefully insert the replacement IC in the circuit board. appropriate tip size and shape that will maintain tip 2. Carefully bend each IC lead against the circuit foil pad and solder it.
  • Page 10 Circuit Board Foil Repair At Other Connections Excessive heat applied to the copper foil of any printed Use the following technique to repair the defective copper circuit board will weaken the adhesive that bonds the foil pattern at connections other than IC Pins. This technique to the circuit board causing the foil to separate from or involves the installation of a jumper wire on the "lift-off"...
  • Page 11: Timing Chart

    TIMING CHART VIDEO SYNC Total Video Sync Front Blanking Sync MODE H / V Frequency Period Active Duration Porch Time Resolution Polarity Clock ( E ) Time ( A ) ( D ) ( C ) ( B ) H(Pixels) 31.469 640 x 350 25.175...
  • Page 12: Disassembly

    DISASSEMBLY 1. Put a soft cushion on the floor and lay the stand on its 4. Cover the panel with your hand so that it is not scratched. side so that the base is accessible. Then, pull up the cabinet corner side. 2.
  • Page 13 7. Push the shield cap upward and disassemble it. 9. Pull out the link cable while pushing up the main frame. 8. Pull out the cable. - 10 -...
  • Page 14: Wiring Diagram

    WIRING DIAGRAM Connector Ass’y P/N: Power Board 6631T11012W Connector Ass’y P/N: 6631T20024C Main Board Control Board - 11 -...
  • Page 15: Block Diagram

    BLOCK DIAGRAM - 12 -...
  • Page 16: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller Part. This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock. The pixel clock for each mode is generated by the PLL. The range of the pixel clock is from 25MHz to 135MHz.
  • Page 17: Lips Board Block Diagram

    LIPS Board Block Diagram 50 ~ 60Hz 100KHz HVDC INPUT RECTIFIER ENERGY OUTPUT RECTIFIER COMPONENTS AND FILTER TRANSFER AND FILTER LINE 100 ~ 240V SIGNAL PWM CONTROL PHOTO -COUPLER COLLECT- CIRCUIT ISOLATION PRIMARY SECONDARY High Voltage output INVERTER CIRCUIT Operation description_LIPS 1.
  • Page 18: 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 19: Service Osd

    SERVICE OSD 1)Turn off the power switch at the front side of display. 2)Wait for about 5 seconds and press MENU,POWER key. 3)Shows the service OSD menu. 4)The service OSD menu contains additional menus that the User OSD menu as described below. a) CLEAR ETI : To initialize using time.
  • Page 20: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, AND FIND OUT A SHORT POINT CHECK J603 VOLTAGE AS OPENING PIN5, PIN6 (5V)? EACH POWER LINE CHECK CHECK 5VS LINE U202 PIN 32 Voltage (OPEN CHECK) (5V) ? NO PROBLEM CHECK KEY CONTROL...
  • Page 21 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) J603 PIN5, PIN6 CHECK LIPS CHECK MICOM INV ON/OFF J603 PIN9 PORT. 1. CONFIRM BRIGHTNESS J603 PIN10 OSD CONTRL STATE. 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE...
  • Page 22 3. NO RASTER (OSD IS NOT DISPLAYED) – GM5221(FE2010) NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PIN11, 50 CHECK U401 (3.3V)? U201 1. CHECK PIN169, 170 PIN169, 170 SOLDERING CONDITION OSCILLATE AS 2. CHECK X201 14.318MHZ? 3. TROUBLE IN U201 U201 PIN181 IS 64KHz H-SYNC? CHECK CONNECTION LINE...
  • Page 23 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK PC IS NOT GOING R629, R630 (SYNC) ? INTO DPM OFF MODE CHECK U201 PIN 81 TROUBLE IN SIGNAL CABLE (0V) ? TROUBLE IN PC - 20 -...
  • Page 24 - 21 -...
  • Page 25: Exploded View Parts List

    3091TKL098X CABINET ASSEMBLY, L1730BSFHM BRAND , DUAL, F-ENGINE, SILVER SPRAY - For United Kingdom 6304FLP086A LCD(LIQUID CRYSTAL DISPLAY), LM170E01-A5K6 LG PHILPS TFT COLOR LVDS SXGA OKI GATE D-IC or 6304FLP110A LCD(LIQUID CRYSTAL DISPLAY), LM170E01-A5N5 LG PHILPS TFT COLOR LPL NJ,250NITS,SXGA,LVDS...
  • Page 26: Replacement Parts List

    REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2004. 06. 15. DATE: 2004. 06. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 27 DATE: 2004. 06. 15. DATE: 2004. 06. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D605 0DS226009AA KDS226 TP KEC SOT-23 80V 300 R224 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP D606 0DS226009AA KDS226 TP KEC SOT-23 80V 300...
  • Page 28 DATE: 2004. 06. 15. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R663 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP R666 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP R667 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP OTHERs X201 6212AA2004F...
  • Page 29: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER - 26 -...
  • Page 30 2. POWER - 27 -...
  • Page 31 3. CONNECTOR - 28 -...
  • Page 32 Blank Page1...
  • Page 33 Blank Page2...
  • Page 34 Jun. 2004 P/NO : 3828TSL095S Printed in Korea...

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L1730bsftm-al**g

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