Service Manuals, User Guides, Schematic Diagrams or docs for : LENOVO Monitor LXM-WL20AH lenovo_lxm-wl20ah_lcd_monitor_sm
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Lenovo LXM-WL20AH
SERVICE MANUAL
LXM-WL20AH
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THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY
OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES,
ERRORS OR OMISSIONS.
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Lenovo LXM-WL20AH
Table of Content
Revision .................................................................................................................................. 3
1. Monitor Specifications......................................................................................................... 4
2. LCD Monitor Description........................................................................................................ 5
3. Operating Instructions............................................................................................................ 6
3.1 General Instructions............................................................................................................. 6
3.2 Control Button .................................................................................................................... 6
3.3 Adjust the Picture................................................................................................................ 6
4. Input/Output Specification....................................................................................................... 8
4.1 15 Pin D-Sub Signal ............................................................................................................. 8
4.2 24 Pin DVI Signal................................................................................................................ 8
4.3 Factory Preset Display Modes............................................................................................... 9
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4.4 Power Supply Characteristics ............................................................................................... 9
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5. Panel Specification ................................................................................................................ 11
5.1 Panel Feature.................................................................................................................. 10
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5.2 Display Characteristics...................................................................................................... 10
5.3 Optical Characteristics...................................................................................................... 10
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5.4 Electrical Characteristics.................................................................................................... 11
6. Block Diagram....................................................................................................................... 12
6.1 Software Flow Chart.............................................................................................................. 12
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6.2 Explored Viewing ................................................................................................................. 14
6.3 Electrical Block Diagram....................................................................................................... 15
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7. Schematic............................................................................................................................. 16
7.1 Main Board........................................................................................................................ 16
7.2 Power Board...................................................................................................................... 21
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8. PCB Layout........................................................................................................................... 24
8.1 Main Board........................................................................................................................ 24
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8.2 Power Board...................................................................................................................... 25
9. Maintainability....................................................................................................................... 26
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9.1 Equipments and Tools Requirement........................................................................................ 26
9.2 Trouble Shooting................................................................................................................ 27
9.2.1 Main Board...................................................................................................................... 27
9.2.2 Keypad Board.............................................................................................................. 30
9.2.3 Power /Inverter/Board.................................................................................................... 30
10. White-Balance, Luminance adjustment................................................................................... 32
11. EDID Content....................................................................................................................... 33
12. BOM List ............................................................................................................................ 34
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Lenovo LXM-WL20AH
Revision List
Version Date Revision History TPV Model Name
A00 Jan-23, 2006 Initial Release TA90KG4MDLG1NP
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Lenovo LXM-WL20AH
1. Monitor Specifications
Items Specification
Model LM201W01
Active Size 20.1 inches(511.133mm) diagonal
Panel Aspect ratio 16:10
Pixel Pitch 0.258mm(H) x 0.258mm(V)
Color Depth 8 bit, 16.7 colors
R. G. B analog signals, 0.7Vp-p / 75
Video
DVI digital TMDS signals
Input Separate Sync H/V TTL
H Frequency 30kHz - 93kHz
V Frequency 56Hz-85Hz
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Dot Frequency 135MHz
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Prug and Play VESA DDC2BTM, DDC CI, MCCS
Horizontal: 433.44mm
Max. Display Area
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Vertical: 270.9mm
Power AC 90-264VAC, 47--63HZ
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