LG Flatron L1930SQ Service Manual
Color monitor
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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
L1930SQSNTM
SUFFIX
SLEURW
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
* 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.
3828TSL085D
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 L1930SQSNTM Part No. 3828TSL085D SUFFIX FLATRON L1930SQ Product Name SLEURW 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 …. ….
- Page 3 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-61 MODEL: L1930SQ (L1930SQSNTM-AL**R) ) **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 BLOCK DIAGRAM ..........11 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 SCHEMATIC DIAGRAM ......... 24 SPECIFICATIONS 1. -
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 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 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 : (Main to Module) P/N: 6631T11012W Connector Ass’y : (Main to LIPS) P/N: 6631T2000Q Connector Ass’y : (Main to Control) Power Board P/N: 6631T20024C J706 J702 Main Board J705 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
LIPS Board Block Diagram 50 ~ 60Hz 100KHz HVDC INPUT RECTIFIER ENERGY OUTPUT RECTIFIER COMPONENTS AND FILTER TRANSFER AND FILTER LINE 100 ~ 240V SIGNAL PHOTO- COLLECTI CONTROL COUPLER CIRCUIT ISOLATION 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 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
SERVICE OSD 1)Turn off the power switch at the front side of display. 2)Press MENU, POWER Switch. 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. b) AUTO COLOR : W/B balance and Automatically sets the gain and offset value. -
Page 18: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, AND FIND OUT A SHORT POINT CHECK J705 VOLTAGE 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 19 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) J705 PIN5, PIN6 CHECK LIPS CHECK MICOM INV ON/OFF J705 PIN9 PORT. MORE THAN 3V? 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. J705 PIN10 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS...
- Page 20 3. NO RASTER (OSD IS NOT DISPLAYED) – MST9111B NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PIN8, 114 CHECK U801 3.3V? U201 1. CHECK PIN122, 123 PIN122, 123 SOLDERING CONDITION OSCILLATE AS 2. CHECK X501 12MHZ? 3. TROUBLE IN U201 U501 PIN43 IS 48KHz H-SYNC? CHECK CONNECTION LINE...
- Page 21 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK PC IS NOT GOING R773, R775(SYNC) ? INTO DPM OFF MODE CHECK U501 PIN 43.44 CHECK H/V SYNC LINE SYNC PULSE ? TROUBLE IN U501 Waveforms R773 H-Sync R775 V_Sync - 19 -...
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Page 23: Exploded View Parts List
Part No. Description Ref. No. 3091TKL125G CABINET ASSEMBLY L1930SQ BRAND L094 SLIVER A-CKD 6304FLP142A LCD(LIQUID CRYSTAL DISPLAY), LM190E03-B4K1 LG PHILPS TFT COLOR 20T,TN,250NITS,SXGA,LVDS 3809TKL078C BACK COVER ASSEMBLY, L1930S .. ""A""-CKD" 3043TKK147N TILT SWIVEL ASSEMBLY, L1730 , ""E""-WA LOCAL" 3043TKK147K TILT SWIVEL ASSEMBLY, 1930S NT LOCAL -FOR CHINA 3043TKK204E TILT SWIVEL ASSEMBLY, L1930 , SLIVER ""145M""-WA LOCAL"... -
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 R208 0RJ0682D677 68 OHM 1/10 W 5% 1608 R/TP R737 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R209 0RJ0682D677 68 OHM 1/10 W 5% 1608 R/TP...
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Page 26: Schematic Diagram
SCHEMATIC DIAGRAM 1. SCALER - 24 -... - Page 27 2. MICOM - 25 -...
- Page 28 3. POWER - 26 -...
- Page 29 4. CONNECTOR & JACKS - 27 -...
- Page 30 Aug 2004 P/NO : 3828TSL085D Printed in Korea...