SCAMAX
®
2600/4000
Tech. Manual 06/2002
T-24
3.1.2.5 Camera Adjustment for SCAMAX
®
2600
Type 0.
When adjusting camera type 0 the following differences to type 3 must be observed.
Black and white values must be set manually by using the four potentiometers. Furthermore, it is not
possible to set the CCD sample delay for the type 0.
The red channel is responsible for200 dpi.
To adjust the black values insert a sheet of black calibration paper in landscape mode into the scanner.
Using the service program, menu option 'Camera-Test', the camera signal is adjusted to a value of 20
(lower auxiliary line) via potentiometers P2 and P4. Both channels must be identical. Remove the black
calibration sheet and replace it with a white calibration sheet to adjust the white values. White values are
set to about 240 (highest point of the curve) by using potentiometers P1 and P3. Since white and black
values influence each other to some degree it will be necessary to re-check the black values and re-
adjust them as necessary.
P1: White values for odd pixels (red)
P2: Black values for odd pixels (red)
P3: White values for even pixels (black)
P4: Black values for even pixels (black)
Summary of Contents for SCAMAX 2600
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Page 16: ...SCAMAX 2600 4000 Tech Manual 06 2002 T 16 Illustration of optical reduction...
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