Adjusting Procedure - ViewSonic VP2030b-1 Service Manual

5. Adjusting Procedure

Function test
(1) Test equipment
Color video signal and pattern generator (or PC with WUXGA resolution)
(2) Test condition
Before function testing and alignment, the unit must warm up for at least 30 minutes under the following
conditions:
1. Room temperature
2. With full-white screen , RGB , black pattern
3. with cycled display modes.
2. Test display modes
Timing Table
Item Timing
1 640 x 350 @ 70 Hz, 31.5
2 640 x 350 @ 85 Hz, 37.9
3 640 x 400 @ 60 Hz, 31.5
4 640 x 400 @ 70 Hz, 31.5
5 640 x 400 @ 85 Hz, 37.9
6 640 x 480 @ 50 Hz, 24.7
7 640 x 480 @ 60 Hz, 31.5
8 640 x 480 @ 67 Hz, 35
9 640 x 480 @ 72 Hz, 37.9
10 640 x 480 @ 75 Hz, 37.5
11 640 x 480 @ 85 Hz, 43.3
12 720 x 400 @ 70 Hz, 31.5
13 720 x 400 @ 85 Hz, 37.9
Viewsonic Corporation
Analog
KHz ü ü ü ü
KHz ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
KHz ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
KHz ü ü ü ü
26 Confidential - Do Not Copy
Remark
For Separated sync, Only horizontal full
screen, The vertical position is at the
center.
For SOG sync, switch 640x400@60Hz
and 640x480@60Hz by [1]+[2] short cut
key (primery = 640x480@60Hz)
For Separated Sync, Switch
640x400@70Hz and 720x400@70Hz by
[1]+[2] short cut key (primery =
640x400@70Hz)
For Separated Sync, Switch
640x400@85Hz and 720x400@85Hz by
[1]+[2] short cut key (primery =
640x400@85Hz)
For SOG sync, switch 640x400@60Hz
and 640x480@60Hz by [1]+[2] short cut
key (primery = 640x480@60Hz)
For Separated Sync, Switch
640x400@85Hz and 720x400@85Hz by
VP2030b-1