Focus; Halo; Raster Regulation - Mitsubishi DPLUS 74SB -BKA Service Manual

5.8 Focus

Focus
Signal No.13
Contrast : Max.
Brightness: Cut off

5.9 Halo

Halo
Signal No.13
Contrast : Max.
Brightness: Preset

5.10 Raster Regulation

Raster Size
Regulation
(Full White pattern)
Resolution: 1024 x 768 (85Hz)
Character: 7 x 9 pixel "∃"
Color : White
Judgment:
"∃" character are readable with clearly at the whole screen.
7 dots
Judgment:
Each color (Red, Blue) line do not form halos.
Vertical lines : halos + core are less than 6 grills(R,B)
Horizontal lines : core : halos = less than 1.5
Horizontal
Judgment:
1.The picture size should not vary more than following spec.
by luminance change from 100cd/m
2.The picture size should not vary more than following spec.
by input voltage change in 90-132VAC and 198-264VAC.
Size Change Spec.
Signal No.13
−
| H 1 H | 2
≤
0 5 . %
H 2
−
| V 1 V | 2
≤
0 5 . %
V 2
All preset signals except No.13
−
| H 1 H | 2
≤
0 7 . %
H 2
−
| V 1 V | 2
≤
0 7 . %
V 2
9 lines
The gap between lines
should be crisp.
Vertical
Core
Halo
Grills
2
to 30cd/m
H1
H2
V2
5-22
2
.
V1