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ViewSonic Corporation
Confidential - Do Not Copy
VG1921wm-2
30
Color Temperature
1. Do “Auto color” at 640 x 480@60Hz, 5-Mosic pattern
2. Measure color temperature, check it complies with the following
temperature:
5400K x=0.335 +/- 0.02, y=0.350 +/- 0.02
6500K x=0.313 +/- 0.02, y=0.329 +/- 0.02
9300K x=0.283 +/- 0.02, y=0.298 +/- 0.02
Chroma Signal
Generator and color
analyzer
Modes switching
check
1. Use Chroma Pattern Generator to make sequence.
VESA (640x480 800x600 1024x768 1280x1024), MAC 832x624
DOS (640x350 720x400), the detail supported modes and power
saving signal.
2. Confirm the above timing modes must be full screen and the
picture must be normal.
3. LED is Orange at power saving mode.
Chroma Signal
Generator
Y measurement at
default setting
1. Set brightness to default value 100 and contrast to default value
70 at 6500K
2. At full white patter, Measure Y, which should be
≥
250cd/m²
Chroma Signal
Generator and Color
Analyzer
Panel Flicker
check
1. Mode: 1280x1024@60Hz
2. Set Brightness& contrast to default value
3. Do “Auto Image Adjust”
4. Shut down PC to check whether there’s glitter on the center of the
picture.
Equipment::
Chroma Signal
Generator & PC
Power saving
1. Mode:
1440x900@60Hz
2.
Pattern: full white
3. Brightness:
Max.
4. Contrast:
Default
5.
Check power consumption at each modes
State
Power Consumption
LED color
Normal
≤
42W
Green
Stand By
< 2W
Orange
Power Key Off
<
1
W
No
Chroma signal
generator and Power
meter
AC input: 230V/50Hz
Summary of Contents for VG1921wm-2
Page 5: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 2 4 Handling and Placing Methods...
Page 6: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 3...
Page 35: ...Disassembly Procedure ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 32...
Page 36: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 33...
Page 37: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 34...
Page 38: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 35...
Page 51: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 48...
Page 61: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 58 11 PCB Layout Diagrams...
Page 62: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 59...