ViewSonic A90f+-1 VCDTS23307-2R Service Manual page 7

Noted that A90f + belong to MPR II models.
Alignment default conditions:
3.1 Room luminance: 225 LUX.
3.2 Warm up: Mis-convergence: 30 minutes (Full white display).
Other spec.: 20 minutes.
Display usable: 15 sec.
3.3 CDT direction : East
3.4 Pattern generator : CHROMA 2250 or equivalent.; (Video O/P: 0.7 Vpp).
3.5 Earth Magnetic field:
Northern Hemisphere: Bh : 0.25 +/- 0.01 GAUSS ; Bv : 0.45+/- 0.01 GAUSS –U03 model.
Southern Hemisphere: Bh : 0 +/- 0.01 GAUSS
3.6 AC Power input: 110V AC, 50/60 Hz ;230V AC ,50 /60Hz.
3.7 Ambient temperature: 20
3.8. Preset Mode Timing: Total 13 Pre-set Modes + 1 mode (mode 5 for self test setup)
MODE RESOLUTIO H.FREQ
N (kHz)
H X V V.FREQ(
Hz)
NO.
640 X 480
VGA
1
VGA 640 X 400
2
MAC 640X480
3
640X480
4
VESA 640 X 480
85Hz 5 (for
auto-size
reference)
VESA 800 X 600
75Hz 6
MAC 832X 624
7
800 X 600
8
VESA 1024 X 768
75Hz 9
1024 X 768
10
VESA 1024 X 768
85Hz 11
1600 X 1200
12
VESA 1280 X 1024
75Hz 13
VESA 1024 X 768
14
ViewSonic Corporation
5 .
H. HORIZ.
POLART TOTAL
Y
V. USEC
31.469 31.778 25.422
59.94
31.469 - 31.779 25.422
70.078 +
35.0 Composit 28.571 21.164
66.667 e
Negative
37.5 26.667 20.317
75
43.269 23.111
85.008
46.875 + 21.333 16.162
75 +
49.725 20.111
74.5
53.674 + 18.631 14.222
85.061 +
60.023 16.660 13.003
75.029
60.241
74.927 16.6
68.677 14.561 10.836
84.997
75.0 13.333 9.877
60
79.976 12.504 9.481
75.025
48.363 20.677 15.754
60.004
, Bv : -0.52 +/-0.01 GAUSS.
H. H.BACK H.SYNC
DISPLAY PORCH WIDTH
USEC USEC USEC
1.907 3.813
1.907 3.813
3.175 2.116
3.81 2.032
17.778 2.222 1.556
3.232 1.616
14.524 3.910 1.117
2.702 1.138
2.235 1.219
12.8 2.2 1.2
2.201 1.016
1.877 1.185
1.837 1.067
2.462 2.092
4
Confidential – Do Not Copy
VERT. V.DIS- V.BACK
TOTAL: -PLAY PORCH
MSEC MSEC MSEC
16.683 15.253 1.049
14.269 12.712 1.112
15 13.714 1.114
13.333 12.8 0.427
11.764 11.093 0.578
13.333 12.8 0.448
13.414 12.549 0.784
11.756 11.179 0.503
13.328 12.795 0.466
13.346 12.749 0.498
11.765 11.183 0.524
16.667 16 0.613
13.329 12.804 0.475
16.666 15.880 0.600
V.SYNC VIDEO
WIDTH RATE
MSEC MHz
0.064 25.175
0.064 25.175
0.086 30.24
0.080 31.5
0.069 36
0.064 49.5
0.06 57.28
0.056 56.25
0.050 78.75
0.05 80
0.044 94.5
0.04 162
0.038 135
0.124 65
A90f+-1