Scanner Calibration; Print Tests - Konica Minolta bizhub 4020 Service Manual

Note: The alignment of the left margin positions the black plane to the right or left. The alignment of
the right margin does not alter the margins and should only be used to adjust the printhead.
5.1.3

Scanner calibration

This diagnostic test is used to calibrate both the Black and white values for the ADF and the flatbed.
The following values can be adjusted using this menu item:

Flatbed Black – Values are -10 to 10. The default value is 0.

ADF Front Black – Values are -10 to 10. The default value is 0.

ADF Back Black – Values are -10 to 10. The default value is 0.

Flatbed White – Values are -10 to 10. The default value is 0.

ADF Front White – Values are -10 to 10. The default value is 0.

ADF Back White – Values are -10 to 10. The default value is 0.
These should only be used to manually adjust a replacement scanner. To adjust a calibration value,
perform the following steps:
1. Navigate to Diagnostics >Scanner Calibration, and touch Scanner Calibration.
2. Select scanner calibration values.
3. Select the value to be adjusted by touching it.
4. Increment up from 0 to darken a value. Decrement the value to lighten it.
5. To view the result for an ADF front adjustment, place a test page image side up and touch Copy
Quick Test. Compare the results to the original document. Adjust as needed.
6. To view the result for an ADF back adjustment, place a test page image side down and touch Copy
Quick Test. Compare the results to the original document. Adjust as needed.
7. To view the result for a flatbed adjustment, remove any paper from the ADF, place a test page on
the flatbed and touch Copy Quick Test. Compare the results to the original. Adjust as needed.
Reset flatbed, ADF front, and ADF back calibration values
These settings revert the selected scan source IQT black and white values back to the Nominal Black
and Nominal White settings.
This test should not be performed unless it is on a replacement scanner.
To reset a scanner calibration value, do the following:
1. Navigate to Diagnostics >Scanner Calibration, and touch Scanner Calibration.
2. Select the value to reset (Flatbed, ADF Front, ADF Rear) by touching the selection.
A screen warning displays.
3. Touch Yes to accept. A message indicating the value is being reset displays.
5.1.4

Print Tests

The Print test determines if the printer can print on media from any of the paper input sources. Each of
the installed sources is available within the Print tests menu.
bizhub 4020/3320 Service Manual
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