Philips 202P4, Service Manual

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68
GENERAL PRODUCT SPECIFICATION(Continued)
202P4 M25P
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02-01-23
BRAND : PHILIPS
02-01-23
590
32
C.P CHOU
19
22"AUTO SCAN CMTR-M25P-202P4
TYPE : 202P40/00C
8639 000 11833
4.10 Picture tilt
1mm (see Fig. 3)
User adjust range for tilt : 1 deg. min.
4.11 Image non-linearity
Horizontal:
Max. - Min.
x 100 % 8 % (30 - 31.5 KHz)
Max. + Min. 7 % (31.5 - 64 KHz)
5 % (64 - 130 Khz)
For any two adjacent blocks 5 % (30 - 31.5 KHz)
4 % (31.5 - 64 KHz)
3 % (64 - 130 KHz)
Vertical : 5 %
For any two adjacent blocks 3 %
4.12 Misconvergence
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 31.5Khz 31.6 – 67Khz 67Khz
B 0.50 0.45 0.40
A 0.40 0.35 0.30
C 0.15 0.15 0.15
4.13 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.
4.14 Brightness uniformity
With an active full area white video input pattern
, no portion of the pattern shall be less
than 75 % of the luminance measured at the CRT center.
and contrast
setting to 100%
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