ViewSonic A90f+-1 VCDTS23307-2R Service Manual page 25

(6). Vertical Center
Adjustment.
(Every Mode.)
(7). Rotation Adjustment.
(8). Geometric distortion
Adjustment.
a). Pin-balance
Adjustment.
(Every Mode)
b). Parallelogram
Adjustment.
(Every Mode)
c). Pincushion
Adjustment
.
(Every Mode)
d).Keystone Adjustment
(Every Mode)
ViewSonic Corporation
1). Pattern: CHROMA 2225, Pattern 1.
Brightness: Center; Contrast: Max.
2-a). Select" Vertical Center" Icon.
-b). Pressing "UP or DOWN" Key and
Adjust "Video display" to vertical center.
1). Pattern: CHROMA 2225, Pattern 1.
Brightness: Center; Contrast: Max.
2-a). Select "Rotation" Icon.
-b). Pressing" UP or DOWN" Key and
Adjust "Video display" to center.
1). Pattern: CHROMA 2225, Pattern 1.
Brightness: Center; Contrast: Max.
2-a) Pin-balance Adjustment :
1). Select "Pin-balance" Icon.
2). Pressing "UP or DOWN " Key and
adjust
(orthogonality) to get the best.
2-b). Parallelogram Adjustment:
1). Select " Parallelogram" Icon
2). Pressing " UP or DOWN " Key and
adjust
(orthogonality) to get the best.
2-c). Pincushion Adjustment:
1). Select "pincushion" Icon.
2). Pressing " UP or DOWN" Key and
adjust
to get the best.
2-d). Keystone Adjusts:
1). Select "Keystone" Icon.
2). Pressing "UP or DOWN" Key and
adjust
to get the best.
22
Confidential – Do Not Copy
C
D
C-D 1mm
(Every Mode)
Adjust" Mode 13" Only.
1). Setting: 352(w) x 264 (h)
mm.
Brightness: Center; Contrast:
Max.
2). Spec.:
a) pincushion distortion <1.0
mm.
b) local distortion: < 0.5
mm.
(Every 50mm only).
c). Other : Any of distortion
should
be fall into <= 1.5 mm.
* Use Window Gauge
(Every Mode)
A90f+-1