Adjust the home position of the shading shaft to correct any image failure due to a dirt on the shading shaft on 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 Adjustment (Back)] screen is displayed.
For details about subsequent operations, refer to Home Read Position Adj(Back): Adjusting the Home Position of the Shading Shaft.