AS-4000 User’s Guide Maintenance Cleaning procedure A Open the cover of the color measurement unit. B Loosen the screw attached to the registration mark presser. 81 Item Explanation Frequency Inspect it daily and clean it if it is dirty. Time required Approx. 5 minutes Maintenance mode Motor Drive Off Cleaning items on the Periodic Maintenance screen Rewinder section Maintenance products to use ❏ Polyester/nylon knit woven fabric ❏ Alcohol for cleaning ink ❏ Alcohol container for cleaning ink