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Service Guide Specification
Service Guide Specification
1.
Model Description
MODEL
L1920PN
SUFFIX
KFUSGM
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 2pages)
* LGEWA : Printed in U.K.
* LGEMX : Printed in Mexico
* LGEIL : Printed in India
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FLATRON L1920P
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Part No.
3828TSL085J
CONTENTS
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Related Manuals for LG FLATRON L1920P
Summary of Contents for LG FLATRON L1920P
- Page 1 %%% %# %%% %# Model Description MODEL BRAND L1920PN Part No. 3828TSL085J SUFFIX FLATRON L1920P Product Name KFUSGM 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 Blank...
- Page 3 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-67 MODEL: L1920P (L1920PN-AF**G) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the GM5321 Chip. *Same looking with new chassis. Issue Date;...
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Page 4: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 SERVICE OSD ............12 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......13 TIMING CHART ............7 WIRING DIAGRAM ..........17 BLOCK DIAGRAM ........... 8 EXPLODED VIEW...........18 DESCRIPTION OF BLOCK DIAGRAM.....9 REPLACEMENT PARTS LIST .......20 ADJUSTMENT ............11 SCHEMATIC DIAGRAM ......... 23 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 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 Video Active Time Front Porch Sync Duration Back Porch Sync Mode Resolution Frequency Clock Sort Polarity 31.469 640x350 25.175 70Hz... -
Page 10: Block Diagram
BLOCK DIAGRAM - 8 -... -
Page 11: 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 12 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 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.
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Page 13: 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 14: 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 15: 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 16 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. 3.3V? 1. CONFIRM BRIGHTNESS J603 PIN10 OSD CONTRL STATE. 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS...
- Page 17 3. NO RASTER (OSD IS NOT DISPLAYED) – GM5321 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 18 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 U201-#181/R629 U201-#182/R630 - 16 -...
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Page 19: Wiring Diagram
WIRING DIAGRAM Connector Ass’y P/N: 6631T11012W J702 J706 SC102 J705 Connector Ass’y P/N: 6631T20023A J201 Connector Ass’y P/N: 6631T20024C Connector Ass’y P/N: 6631T20008G - 17 -... - Page 20 - 18 -...
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Page 21: Exploded View
EXPLODED VIEW PARTS LIST Ref. No. Part No. Description 3091TKL095E CABINET ASSEMBLY, L1920 BRAND L083 ""C"" CKD" 6304FFT002C LCD(LIQUID CRYSTAL DISPLAY), FLC48SXC8V-11A FUJITSU TFT COLOR 300NITS LVDS MVA TCO-03 3809TKL066F BACK COVER ASSEMBLY, L1920 L066 ""D"" CKD" 3043TKK118D TILT SWIVEL ASSEMBLY, L1920P K691(W) ""C"" CKD" 6871TST465B PWB(PCB) ASSEMBLY,SUB, L1920PM(KFUSRM) CONTROL TOTAL BRAND MX CKD 4951TKS138B... -
Page 22: 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. 8. 24. DATE: 2004. 8. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 23 DATE: 2004. 8. 24. DATE: 2004. 8. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D605 0DS226009AA KDS226 TP KEC SOT-23 80V 30 R226 0RJ0472D677 47 OHM 1/10 W 5% 1608 R/TP D606 0DS226009AA KDS226 TP KEC SOT-23 80V 30...
- Page 24 DATE: 2004. 8. 24. DATE: 2004. 8. 24. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R664 0RJ1801D677 1.8K OHM 1/10 W 5% 1608 R/TP L812 125-155D BFS3514A0FG SAMHWA 3.5*14MM R665 0RJ3301D677 3.3K OHM 1/10 W 5% 1608 R/TP...
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Page 25: Schematic Diagram
SCHEMATIC DIAGRAM 1. SCALER - 23 -... - Page 26 2. POWER - 24 -...
- Page 27 3.CONNECTOR - 25 -...
- Page 28 Blank Page1...
- Page 29 Blank Page2...
- Page 30 Aug. 2004 P/NO : 3828TSL085J Printed in Korea...