Adjust the home position of the shading axis to correct an image error due to a dirt on the shading axis in the back side of the ADF.
Follow the procedure on Administrator Setting to display the [Administrator Setting Menu] screen.
Press [System Setting] on the [Administrator Setting Menu] screen, and then press [Expert Adjustment], [ADF Adjustment], and [Home Read Position Adj (Back)] in sequence.
The [Home Read Position Adj (Back)] screen is displayed.
For details about subsequent operations, refer to Home Read Position Adj(Back): Adjusting the Home Position of the Shading Shaft.