Philips 202P4 Service Manual page 76

68 202P4 M25P
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4.10
4.11 Image non-linearity
4.12 Misconvergence
4.13
4.14
02-01-23
C.P CHOU
GENERAL PRODUCT SPECIFICATION(Continued)
Picture tilt
1mm (see Fig. 3)
User adjust range for tilt : 1 deg. min.
Horizontal:
Max. - Min.
Max. + Min.
For any two adjacent blocks
Vertical :
For any two adjacent blocks
The maximum convergence error should be measured on a white
line and represents the maximum distance between the center
of the red, green and blue lines over the whole image area.
Max. misconvergence :
( Picture area 392X294 See Fig. 6 )
Zone
B
A
C
Focus check
First, adjust brightness to 50 % position and contrast to
max., and then generate "" characters for 1024 lines to
cover entire picture area (picture size is shown in sect.
4.5). Characters should be clearly identified at the center
and all corners. Character size is shown in Fig. 7.
Brightness uniformity
With an active full area white video input pattern
setting to 100% , no portion of the pattern shall be less
than 75 % of the luminance measured at the CRT center.
22"AUTO SCAN CMTR-M25P-202P4
TYPE : 202P40/00C
BRAND : PHILIPS
02-01-23
<
x 100 % 8 % (30
<
7 % (31.5 - 64
<
5 % (64
<
5 % (30
<
4 % (31.5 - 64
<
3 % (64
<
5 %
<
3 %
31.5Khz 31.6 – 67Khz
0.50 0.45
0.40 0.35
0.15 0.15
8639 000 11833
590
32
- 31.5 KHz)
KHz)
- 130 Khz)
- 31.5 KHz)
KHz)
- 130 KHz)
>
67Khz
0.40
0.30
0.15
and contrast
19