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Service Guide Specification
Service Guide Specification
1.
Model Description
L1740BN
MODEL
L1940BN
ANEUEP
SUFFIX
ALEUEP
2.
Printing Specification
1. Trim Size (Format) :
2. Printing Colors
• Cover :
• Inside :
3. Stock (Paper)
• Cover :
• 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.
http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor
Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов
ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru
BRAND
Product Name
215mm x 280 mm
LG COLORS
Black
Snow White 150 g/
Snow White 100 g/
Saddle stitch
English
32
( Including blank3pages)
* LGEWA : Printed in U.K.
* LGEMX : Printed in Mexico
* LGEIL : Printed in India
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FLATRON L1740B
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Part No.
3828TSL096M
CONTENTS
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Related Manuals for LG FLATRON L1940B
Summary of Contents for LG FLATRON L1940B
- Page 1 BRAND L1940BN Part No. 3828TSL096M ANEUEP FLATRON L1740B SUFFIX Product Name ALEUEP FLATRON L1940B Printing Specification 1. Trim Size (Format) : 215mm x 280 mm 2. Printing Colors • Cover : LG COLORS • Inside : Black 3. Stock (Paper) Snow White 150 g/ •...
- Page 2 D D D D Pagination sheet Pagination sheet English English English English English Front cover Cover Inside …. ….. (blank) English English English English English Rear cover Rear Inside Cover …. (blank) (blank) http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт...
- Page 3 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-82 MODEL: L1740B (L1740BN-AN**EP) L1940B (L1940BN-AL**EP) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the MSTAR Chip. http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт...
- Page 4 - 1 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
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Page 5: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 SERVICE OSD ............15 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......16 TIMING CHART ............7 WIRING DIAGRAM ..........20 DISASSEMBLY ............8 EXPLODED VIEW...........21 BLOCK DIAGRAM ........... 9 REPLACEMENT PARTS LIST .......23 DESCRIPTION OF BLOCK DIAGRAM....10 ADJUSTMENT ............ -
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"...
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Page 10: 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 11: Disassembly
DISASSEMBLY Disassembly Hinge Cover. Remove the screws. 1. Open the Backcover's latch with special Jig. Unlock Latch between C/A and B/C as 1~14 sequence. 2. Refer to right picture which shows the latches. Disassemble inverter shield something thin. Disassemble back cover. Remove the 4 screws from each side of metal Remove the 7 screws from each side of metal frame. -
Page 12: Block Diagram
BLOCK DIAGRAM (L1740B) - 9 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru... -
Page 13: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM (L1740B) 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 BLOCK DIAGRAM (L1940B) - 11 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
- Page 15 DESCRIPTION OF BLOCK DIAGRAM (L1940B) 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 16 LIPS Board Block Diagram 50 ~ 60Hz 100KHz HVDC INPUT RECTIFIER ENERGY OUTPUT RECTIFIER COMPONENTS AND FILTER TRANSFER AND FILTER LINE 100 ~ 240V SIGNAL PHOTO- COLLENT - 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.
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Page 17: 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 18: 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 19: 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 20 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) CHECK POWER BOARD, AND J705 FIND OUT A SHORT POINT PIN5, PIN6 AS OPENING EACH POWER LINE CHECK MICOM INV ON/OFF J705 PIN9 2.5V? PORT. 1.
- Page 21 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? U201 1. CHECK PIN122, 123 PIN96, 97 SOLDERING CONDITION OSCILLATE AS 2. CHECK X501 12MHZ? 3.
- Page 22 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 R216, R778 H-Sync R217, R781 V-Sync - 19 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor...
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Page 23: Wiring Diagram
WIRING DIAGRAM Connector Ass’y P/N: 6631T11020W or 6631T11012W Connector Ass’y P/N: 6631T120023A Connector Ass’y P/N: 6631T2006J Connector Ass’y P/N: 6631T2006H - 20 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ... - Page 24 - 21 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
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Page 25: Exploded View
CABINET ASSEMBLY, L1940 BRAND 125A ABS-BK ANALOG 3091TKL149D CABINET ASSEMBLY, L1940 BRAND 125A ABS-BK ANALOG C/SKD 6304FLP110B LCD(LIQUID CRYSTAL DISPLAY), LM170E01-A5N5 LG PHILPS TFT COLOR PART NUMBER CHANGE FOR COST COMPENSATION or 6304FLP110A LCD(LIQUID CRYSTAL DISPLAY ), LM170E01-A5N5 LG PHILPS TFT COLOR LPL NJ,250NITS,SXGA,LVDS 6304FLP160A... -
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. 12. 6. DATE: 2004. 12. 6. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 27 DATE: 2004. 12. 6. DATE: 2004. 12. 6. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C905 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R R534 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP C906 0CK105CD56A 1UF 1608 10V 10% R/TP X7R...
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Page 28: Schematic Diagram
SCHEMATIC DIAGRAM 1. SCALER - 25 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru... - Page 29 2. MICOM - 26 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
- Page 30 3. POWER - 27 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
- Page 31 4. CONNECTOR & JACKS - 28 - http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
- Page 32 Blank Page1 http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
- Page 33 Blank Page2 http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
- Page 34 Dec. 2004 P/NO : 3828TSL096M Printed in Korea http://mycomp.su/x/ - Maintenance and Service Guide,Service Manual,Motherboard Schematics for Laptop/notebook, monitor Ремонт мониторов. Запчасти и комплектующие для ноутбука. Схемы, сервис мануалы, инструкции по разборке ноутбука, мониторов ВОССТАНОВЛЕНИЕ ДАННЫХ. г. Санкт-Петербург, Тел.(812)951-37-99, Тел.8-921-951-37-99, ICQ:573812745,service@it-lux.ru...
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