ViewSonic A90f+-1 VCDTS23307-2R Service Manual page 24

7-5. Pre-set Modes Alignment
Note: For auto-sizing function, all preset modes must be saved by pressing "head" Icon in preset
OSD menu after adjustment
Item.
(1). Horizontal size preset
(2). Horizontal Size
Adjustment
(Every Mode)
(3) Raster center
adjustment.
B-A:<= 2 mm
(4). Horizontal Phase
Adjustment.
(Every Mode).
(5).Vertical Height
Adjustment.
(Every Mode.).
ViewSonic Corporation
Alignment description.
1). Pattern: CHROMA 2225, Pattern 1.
Brightness: Center. Contrast: Max.
2). Mode: 35kHz/66.7Hz
3). H. size set at 127
4). Adjust R319A until size is 2mm
over-scan
bezel each side.
1). Pattern: CHROMA 2225, Pattern 1.
Brightness: Center. Contrast: Max.
2). Enter factory preset menu.
-a).Select "Horizontal Width" Icon.
-b).Pressing "UP or DOWN" Key and
adjust
"Video display" to 352 1mm.
* Mode: Mode 13(1280 x 1024 @75Hz)
* Pattern: Black (only background visible).
* Brightness: raster visible.
* Adjust R454, move the raster at center of
Bezel opening.
1). Pattern: CHROMA 2225, Pattern 1.
Brightness: Center; Contrast: Max.
2-a). Select" Horizontal Phase" Icon.
-b) Pressing " UP or DOWN" Key and
adjust
"Video display" to horizontal Center.
1). Pattern: CHROMA 2250, Pattern 1.
Brightness: Center. Contrast: Max.
2-a). Select "Vertical Height" Icon.
-b).Pressing "UP or DOWN" Key and
Adjust "Video display" to 264 +/- 1 mm.
21
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Alignment specification (Refer
.
(Every Mode: 352 +/- 2 mm).
RASTER
BEZEL
B
A
A
B
A-B
(Every Mode).
264 2mm
(Every Mode).
A90f+-1
spec.).