LG FLATRON L1732S Service Manual

LG FLATRON L1732S Service Manual

Color monitor

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Service Guide Specification
Service Guide Specification
1.
Model Description
L1732S-SFN
MODEL
L1932S-SFN
KNRUQPT
SUFFIX
KXRUQPT
2.
Printing Specification
1. Trim Size (Format) :
2. Printing Colors
• Cover :
LG COLORS
• Inside :
Black
3. Stock (Paper)
• Cover :
Snow White 150 g/㎡
• Inside :
Snow White 100 g/㎡
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
8
7
6
5
4
3
2
1
REV.
SIGNATURE
MM/DD/YY
NO.
BRAND
Product Name
215mm x 280 mm
Saddle stitch
English
28 (Including blank 1page)
* LGEWA : Printed in U.K.
* LGEMX : Printed in Mexico
* LGEIL : Printed in India
CHANGE NO.
LG
FLATRON L1732S
FLATRON L1932S
CHANGE
담 당
관 리 자
LEE H.J
KIM J.O
05.11.02
05.11.02
Part No.
38289S0009Q
CONTENTS

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Summary of Contents for LG FLATRON L1732S

  • Page 1 KIM J.O Model Description 05.11.02 05.11.02 L1732S-SFN MODEL BRAND L1932S-SFN Part No. 38289S0009Q KNRUQPT FLATRON L1732S SUFFIX Product Name KXRUQPT FLATRON L1932S Printing Specification 1. Trim Size (Format) : 215mm x 280 mm 2. Printing Colors • Cover : LG COLORS •...
  • Page 2 P/NO. Pagination sheet 38289S0009Q Pagination sheet Total pages :28page Front cover English English English English English Cover Inside blank …. ….. English English English English English Rear cover Rear Inside Cover ….
  • Page 3 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-82 MODEL: L1732S (L1732S-SFN.AN**EP) L1932S (L1932S-SFN.AX**EP) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the MSTAR Chip.
  • Page 4 Blank Page1...
  • Page 5: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 SERVICE OSD ............13 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......14 TIMING CHART ............7 WIRING DIAGRAM ..........18 DISASSEMBLY ............8 EXPLODED VIEW...........19 BLOCK DIAGRAM.............9 REPLACEMENT PARTS LIST .......21 DISCRIPTION OF BLOCK DIAGRAM ....10 ADJUSTMENT ............12 SCHEMATIC DIAGRAM .........
  • Page 6: 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 7 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 8 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 9 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 10: 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) 25.175 31.469 640 x 350...
  • Page 11: Disassembly

    DISASSEMBLY Disassembly back door. Disassembly stand rear cover. Remove the screws. Remove the screws. Pull up the cabinet corner side. Disassemble back cover. - 8 -...
  • Page 12: Block Diagram

    BLOCK DIAGRAM - 9 -...
  • Page 13: Discription 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 14 LIPS Board Block Diagram 50 ~ 60Hz 100KHz HVDC ENERGY INPUT RECTIFIER OUTPUT RECTIFIER TRANSFER COMPONENTS AND FILTER AND FILTER LINE 100 ~ 240V SIGNAL PHOTO- COLLENT- COMTROL COUPLER CIRCUIT ISOLATI ON PRIMARY SECONDARY Operation description_LIPS 1. EMI components. This part contains of EMI components to comply with global marketing EMI standards like FCC, VCCI CISPR, the circuit included a line-filter, across line capacitor and of course the primary protection fuse.
  • Page 15: 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 16: Service Osd

    SERVICE OSD 1) Turn off the power switch at the front side of the display. 2) Wait for about 5 seconds and press MENU, POWER switch with 1 second interval. 3) The SVC OSD menu contains additional menus that the User OSD menu as described below. a) Auto Color : W/B balance and Automatically sets the gain and offset value.
  • Page 17: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, CHECK J705 AND FIND OUT A SHORT VOLTAGE POINT AS OPENING PIN5, PIN6 (5V)? EACH POWER LINE CHECK CHECK 5VS LINE U501 PIN 8 VOLTAGE (OPEN CHECK) (5V) ? NO PROBLEM CHECK KEY CONTROL...
  • Page 18 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) CHECK POWER BOARD, J705 AND FIND OUT A SHORT PIN5, PIN6 POINT AS OPENING EACH POWER LINE J705 PIN9 CHECK MICOM INV 2.5V? ON/OFF PORT. 1.
  • Page 19 3. NO RASTER (OSD IS NOT DISPLAYED) – MSTAR NO RASTER (OSD IS NOT DISPLAYED) U201 CHECK U801 (17", 19") PIN 18, 90 CHECK U803 (15") 3.3V? 1. CHECK PIN122, 123 U201 SOLDERING CONDITION PIN96, 97 2. CHECK X501 OSCILLATE AS 3.
  • Page 20 4. TROUBLE IN DPM TROUBLE IN DPM CHECK CHECK PC R216, R217 PC IS NOT GOING R778, R781 INTO DPM OFF MODE CHECK U501 PIN 43.44 CHECK H/V SYNC LINE SYNC PULSE ? TROUBLE IN U501 Waveforms 3 R217, R781 V-Sync R216, R778 H-Sync - 17 -...
  • Page 21: Wiring Diagram

    WIRING DIAGRAM Connector Ass’y P/N: 6631T11012W Connector Ass’y P/N: or 6631T11020W 6631T20023A Connector Ass’y P/N: 6631900030D - 18 -...
  • Page 22: Exploded View

    EXPLODED VIEW - 19 -...
  • Page 23 CABINET ASSEMBLY, L1732S BRAND L159A ABS350 SILVER. F+8MS+TCO03+CKD 3091TKL187G CABINET ASSEMBLY, L1932S BRAND 160A ABS350 SILVER. F+8MS+TCO03+CKD 6304FLP278A LCD(LIQUID CRYSTAL DISPLAY), LM170E01-TLB1 LG PHILPS TFT COLOR P5,645CH,300NITS,8MS,LPL NJ/KUMI,PB FREE,EGI,OKI S D-IC,EGI,SXGA,L 6304FLP310A LCD(LIQUID CRYSTAL DISPLAY), LM190E03-TLB5 LG PHILPS TFT COLOR P4,645CH,300NITS,TN,8MS,LPL NJ,PB FREE,EGI,OKI S D-IC,SXGA,LVDS or 6304FLP313A...
  • Page 24: 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: 2005. 11. 02. DATE: 2005. 11. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 25 DATE: 2005. 11. 02. DATE: 2005. 11. 02. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R534 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP 140-058E SKHV10910B LGEC NON 12V 20A R535 0RJ3301D677 3.3K OHM 1/10 W 5% 1608 R/TP...
  • Page 26: Schematic Diagram

    SCHEMATIC DIAGRAM 1. TSU56AL / TSU16AL - 23 -...
  • Page 27 2. MICOM - 24 -...
  • Page 28 3.POWER - 25 -...
  • Page 29 4. CONNECTOR & JACKS - 26 -...
  • Page 30 Nov. 2005 P/NO : 38289S0009Q Printed in Korea...

This manual is also suitable for:

Flatron l1932sL1732s-sfnL1932s-sfn

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