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VX2025wm-1 데이터시트 PDF




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기능 Color TFT LCD Display
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VX2025wm-1 데이터시트, 핀배열, 회로
Service Manual
ViewSonic VX2025wm-1
Model No. VS10859
20” Color TFT LCD Display
(VX2025wm-1_SM Rev. 1b Sep. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA – (800) 888-8583




VX2025wm-1 pdf, 반도체, 판매, 대치품
1. Precautions and Safety Notices
1. Caution :
No modification of any circuit should be attempted . Service work should only be performed after
you are thoroughly familiar with all of the following safety checks and servicing guide line
2. Safety Check :
Care should be taken while servicing this LCD display. Because of the high voltage used in the
inverter circuit. These voltage are exposed in such areas as the associated transformer circuits .
3. POWER SUPPLY REQUIREMENTS
The external power converter for this display utilizes AC and DC cords , AC cord is
detachable , but DC cord is permanently attached . Any attempt to replace another adapter could
result in serious problem on the display .
4. LEAKAGE CURRENT HOT CHECK
4-1 Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during
this check.
4-2 Connect a 1500 ohm , 10 watt resistor , paralleled by a 0.15uF capacitor between each
metallic part and a good earth ground
4-3 Use an AC voltmeter with 1000 ohm / volt or more sensitivity and measure the AC voltage
across the combination 1500 ohm resistor and 0.15uF capacitor.
4-4 Move the resistor connection to each exposed metallic part and measure the voltage.
4-5 Reverse the polarity of the AC plug in the AC outlet and repeat the above measurement.
4-6 Voltage measured must not exceed 1.5 volt RMS, from any exposed metallic part to the
ground. A leakage current tester may be used in the above hot check, in which case any
circuit measured must not exceed 1.0 milliamp. In the case of a measurement exceeding
the 1.0 milliamp value, a rework is required to eliminate the chance of a shock hazard .
AC VOLTMETER
V
To Metal Parts
0.15u
.
1500 10W
Earth Ground
ViewSonic Corporation
Confidential - Do Not Copy
VX2025wm-1
1

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VX2025wm-1 전자부품, 판매, 대치품
2. Specification
GENERAL specification
Test Resolution & Frequency
Test Image Size
Contrast and Brightness Controls
1680x1050 @ 60Hz
Full Size
Factory Default:
Contrast = 70%, Brightness = 100%
VIDEO INTERFACE
Analog Input Connector
Digital Input Connector
Default Input Connector
Video Cable Strain Relief
Video Cable Connector DB-15 Pin out
Video Signals
Video Impedance
Maximum PC Video Signal
Maximum Mac Video Signal
Sync Signals
DDC 1/2B
Sync Compatibility
Video Compatibility
Resolution Compatibility
Exclusions
DB-15 (Analog), refer the appendix A
DVI-D (Digital), refer the appendix B
Defaults to the first detected input
Equal to twice the weight of the monitor for five minutes
Compliant DDC 1/2B
1. Video RGB (Analog)
Separate, Composite, and Sync on Green
2. TMDS (Digital)
75 Ohms (Analog), 100 Ohms (Digital)
950 mV with no damage to monitor
1250 mV with no damage to monitor
LVDS
Compliant with Revision 1.3
Separate Sync, Composite Sync, SOG
Shall be compatible with all PC type computers, Macintosh
computers, and after market video cards
640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x
624, 1024 x 768, 1152 x 864, 1152 x 870, 1280 x 720, 1280 x
960, 1280 x 1024, 1680 x 1050
* The image vertical size might not be full screen.
But the image vertical position should be at the center.
Not compatible with interlaced video
ViewSonic Corporation
Confidential - Do Not Copy
VX2025wm-1
4

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