Contex HD5450 User Manual page 42

Maintenance
3
Follow the steps described by the wizard
The scanner maintenance wizard will guide you through the alignment and
calibration steps.
Click the Next button in the welcome dialog to proceed.
4
Insert the calibration sheet
During the process, the wizard will ask you to insert the Calibration Sheet
that came with your scanner. The sheet's printed side must be inserted
face down. Align the sheet's midpoint arrow with the scanner's midpoint
arrow and feed the sheet into the scanner.
Click the wizard's Next button to continue.
41