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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. Alignment description.
Alignment specification (Refer
spec.).
(1). Horizontal size preset
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.
(2). Horizontal Size
Adjustment
(Every Mode)
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.
.
(Every Mode: 352 +/- 2 mm).
(3) Raster center
adjustment.
* 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.
(4). Horizontal Phase
Adjustment.
(Every Mode).
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.
(Every Mode).
(5).Vertical Height
Adjustment.
(Every Mode.).
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.
264
̈́
2mm
(Every Mode).
B
A
Ѩ
A-B
Ѩ Љ
RASTER
B
A
BEZEL
B-A:<= 2 mm
ViewSonic Corporation
21
Confidential – Do Not Copy
A
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0f+-1
Summary of Contents for A90f+ 1
Page 57: ...12 PCB Layout ViewSonic Corporation 54 Confidential Do Not Copy A90f 1...
Page 58: ...VIDEO PWB 0414 ViewSonic Corporation 55 Confidential Do Not Copy A90f 1...
Page 59: ...KEY CONTROL PWB 0488 ViewSonic Corporation 56 Confidential Do Not Copy A90f 1...
Page 60: ...MAIN BOARD 13 Schematic Diagrams ViewSonic Corporation 57 Confidential Do Not Copy A90f 1...
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Page 62: ...KEY CORTROL ViewSonic Corporation 59 Confidential Do Not Copy A90f 1...
Page 63: ...POWER SUPPLY CKT ViewSonic Corporation 60 Confidential Do Not Copy A90f 1...
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