LG FLATRON L1930SQ Service Manual
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Also See for FLATRON L1930SQ:
- Brochure (38 pages) ,
- User manual (24 pages) ,
- Service manual (30 pages)
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Service Guide Specification
Service Guide Specification
1.
Model Description
MODEL
L1930SQSFTM
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
8
7
6
5
4
3
2
1
REV.
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
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FLATRON L1930SQ
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Part No.
3828TSL085E
CONTENTS
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Table of Contents
Related Manuals for LG FLATRON L1930SQ
Summary of Contents for LG FLATRON L1930SQ
- Page 1 %%% %# %%% %# Model Description MODEL BRAND L1930SQSFTM Part No. 3828TSL085E SUFFIX FLATRON L1930SQ Product Name ALAUG Printing Specification 1. Trim Size (Format) : 215mm x 280 mm 2. Printing Colors • Cover : LG COLORS • Inside : Black 3.
- Page 2 D D D D Pagination sheet Pagination sheet English English English English English Front Cover Cover inside …. ….. Rear English English English English English Rear Cover Inside Cover …. …. 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: L1930SQ (L1930SQSFTM-AL**G) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU LightView SOURCE SET/AUTO...
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Page 4: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 DESCRIPTION OF BLOCK DIAGRAM ....12 PRECAUTIONS ............3 ADJUSTMENT ............14 SERVICE PRECAUTIONS ........4 TROUBLESHOOTING GUIDE ......16 TIMING CHART ............7 EXPLODED VIEW...........20 DISASSEMBLY ............8 REPLACEMENT PARTS LIST .......22 WIRING DIAGRAM ..........10 BLOCK DIAGRAM .......... -
Page 5: 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 6: 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 7 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 8 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"...
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Page 9: Timing Chart
TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Back Porch Video Active Time Front Porch Sync Duration Sync Mode Resolution Frequency Clock Sort Polarity 31.469 640x350 25.175 70Hz... -
Page 10: 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 11 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. - 9 -...
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Page 12: Wiring Diagram
WIRING DIAGRAM Connector Ass’y P/N: Power Board 6631T11012W Connector Ass’y P/N: 6631T20024C Main Board Control Board - 10 -... -
Page 13: Block Diagram
BLOCK DIAGRAM - 11 -... -
Page 14: 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 15 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.
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Page 16: 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 17 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.
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Page 18: 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 19 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 OSD CONTRL STATE. J603 PIN10 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE...
- Page 20 3. NO RASTER (OSD IS NOT DISPLAYED) – GM5221/GM2221 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 21 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 Waveforms R629 H-SYNC R630 V-SYNC - 19 -...
- Page 22 - 20 -...
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Page 23: Exploded View
CABINET ASSEMBLY, L1930SQ BRAND L094 SLIVER F-ENG -For AUSTRALIA 3091TKL125C CABINET ASSEMBLY, L1930SQ BRAND L094 ANALOG_SLIVER(F-ENG) -For Singapore 6304FLP142A LCD(LIQUID CRYSTAL DISPLAY), LM190E03-B4K1 LG PHILPS TFT COLOR 20T,TN,250NITS,SXGA,LVDS 3809TKL078A BACK COVER ASSEMBLY, L1930 TKL078A (ANALOG)_D/GRAY 3043TKK147B TILT SWIVEL ASSEMBLY, L1930 .. STAND BASE_""S""TYPE"... -
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: 2004. 08. 23. DATE: 2004. 08. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 25 DATE: 2004. 08. 23. DATE: 2004. 08. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION U402 0IPMGSG019A LD1117S18TR STM SOT223 R/TP R605 0RJ0752D677 75 OHM 1/10 W 5% 1608 R/TP U403 0TFVI80023A VISHAY SI3865DV R/TP TSOP-6...
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Page 26: Schematic Diagram
SCHEMATIC DIAGRAM 1. SCALER - 24 -... - Page 27 2. POWER - 25 -...
- Page 28 3. CONNECTOR - 26 -...
- Page 29 Blank Page...
- Page 30 Aug. 2004 P/NO : 3828TSL085E Printed in Korea...