26Cleaning the Unit∫ Outside of the scannerClean the unit at least once a month.1 Turn the power off.2 Clean the cover with a soft cloth.≥ The ADF insertion and exit slots get dirtyeasily, therefore, proper cleaning isrequired.3 Remove dirt and dust from the fanexhaust vent with a brush.∫ Inside the scannerClean the unit at least once a week or when 20,000 sheets have been scanned, whichever comes first.≥ Clean the rollers, sensors and double feed detector if paper jamming or multiple-sheet feeding occursfrequently. (Refer to pages 27–33.)≥ Clean the ADF glass, reference plate when black or white lines appear on the scanned images.(Refer to page 31.)≥ Clean the flatbed glass and document cover detector. (Refer to page 34.)≥ If the documents you scan are dirty, then the scanner components will also become dirty.To maintain proper scanning, clean the scanner components frequently.≥ When scanning with the flatbed and black dots or white patches occurs, open the document cover, and cleanthe flatbed glass and flatbed sheet using the accessory roller cleaning paper.Roller cleaning paperOpen the bag on the dotted line and take outthe roller cleaning paper.≥ If the roller cleaning paper bag is left opened fora long period of time before using it, the alcoholwill evaporate. Please use the roller cleaningpaper immediately after opening the bag.§ The roller cleaning paper (Model No. KV-SS03) is available from the dealer where youpurchased your scanner.For supplies and accessories: Call 1-800-346-4768 (U.S.A. only) or your dealer.: Off positionDotted line