Color Temperature Check; Brightness Out (Video Signal Input 700Mv ± 2%); Ddc Data Check - Acer P221W Service Manual

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5.1.4
Set brightness and contrast to be maximum, apply pattern as Fig.3, it should be the following
requirement:

5.2 Color Temperature Check

5.2.1 Test mode: 1680x1050 @ 60 Hz
5.2.2 Test pattern: pattern #41 of "WHITE"
5.2.3 Test tool: Color Analyzer Chroma7120
5.2.4 Set brightness to be maximum and contrast to be 50%, measure color coordinate and luminance by
color analyzer as the following:
5.3 Brightness Out (Video signal input 700mV ± 2%)
5.3.1 Test mode: 1680x1050 @ 60 Hz
5.3.2 Test pattern: pattern #41 of "WHITE"
5.3.3 Test tool: Color Analyzer Chroma7120
Set brightness and contrast to be maximum with white pattern, to measure the screen center, the
light output shall be >= BL cd/m

5.4 DDC Data Check

5.4.1 EDID program
5.4.2 Execute main program for EDID writing (refer to model type), using scanner for barcode
download.
5.4.3 If writing EEPROM is successful, and then shows text "PASS" on screen; if writing EEPROM is
failure, then shows text "FAIL".
Min.
luminance
Max.
luminance
L/2
1
4
7
Mode
9300K
USER
6500K
2
Mode
MT170EN01 V7
of
nine
points
(backlight
of
nine
points
(backlight
L/4
2
3
5
6
8
9
Fig. 3
Chromaticity Coordinate
x
0.283 ± 0.030
/
0.313 ± 0.030
2
BL (cd/cm
)
Remark
300
18
Service Manual
)
¡Ý 75
%
)
W/4
W/2
y
0.298 ± 0.030
/
0.329 ± 0.030
TYP

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