Acer AM501, Service Manual

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4.10.10 Image Stability (Jitter)
Not perceivable Jitter will be present on the display, when displaying a cross-hatch pattern, at a distance
of 500 mm from the screen. In any case it is not admitted a measured Jitter value greater than one dot
(both on X axis or on Y axis).
4.10.11White Color Adjustment
The chromaticity coordinates of the white color shall be verified with standard full white screen @700
mV input level with brightness control at cut-off and contrast control adjusted to 25FL nits of luminance
on the center of the screen. The 1931 CIE chromaticity diagram (x, y) coordinates for the screen center
shall be:
x = 0.281
±
0.030
y = 0.311
±
0.030
4.10.12 White Color Uniformity
With a standard full white screen as described in section 4.11, the color coordinates measured at any
point of the screen shall be:
x = Xref
±
0.030
y = Yref
±
0.030
4.10.13 White Color Tracking
Contrast Control Tracking Error
After performing the standard setting as described in section 4.11, the contrast control shall be moved
within 30FL (max) and 7FL (min) of screen luminance or to the mechanical stop if the lower limit cannot
be reached. The white color coordinates in the center of the CRT when displaying the standard pattern
at all the allowed setting of the contrast control shall be:
x = Xref
±
0.035
y = Yref
±
0.035
Brightness Control Tracking Error
The initial setting shall be as follows:
Pattern: white raster
Input level: 700mV
Brightness control: maximum
Contrast control:
adjust to 100 nit of screen luminance in the center of the CRT
The brightness control shall be moved within 30FL (max) and 7FL (min) of screen luminance or to the
mechanical stop if the these limits cannot be reached. The white color coordinates in the center of the
CRT at all the allowed settings of the brightness control shall be:
x = Xref
±
0.035
y = Yref
±
0.035