SCANVIEW ScanMate 4000, Manual, Page: 148 / 176

How to test
1 • Fit a terminator to a SCSI connector on the scanner and SCSI cable
and RS 232 service cable to the scanner and PC.
2 • Switch on the scanner in the SCSI mode.
3 • Start up Photoshop plug-in.
4 • Mount a piece of aluminium foil onto the drum.
5 • Select the following settings in Photoshop:
Transmission color
Gamma 1.4
Neutral gradation curve
1200 dpi resolution
White/black point: max. 255
min. 0
6 • Scan an area of approximately 20 x 20 mm in the middle of the
aluminium foil, without making a preview first.
7 • Select adjust level and move the left hand (black) marker to the
right until level 2 is obtained (fig. 1).
8 • Now move the right hand (white) marker to the left until level 4 is
obtained.
9 • Check the image and ensure that there are no stripes on the screen,
(fig. 1).
10 • Fig. 2 shows an example of stripes in shadow when the black
marker level is between 0 and 1. If there are stripes on the screen
after steps 9 and 10, contact ScanView´s support department.
Service Manual • ScanMate 4000/5000 Edition 1 • January 1996
Stripes in Shadow
5•13b