Canon CanoScan 9900F Service Manual page 15

CHAPTER 1
IV. CUSTOMER'S DAILY MAINTENANCE
Dirt on the document glass may result in an unclear image or lines on an image. Clean the
document glass according to the following steps.
1) Disconnect all the cables from the scanner.
2) Dampen a soft and clean cloth and wring it thoroughly. Wipe a dirt off the document
glass with the cloth.
3) Completely wipe water off the document glass with a dry cloth.
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COPYRIGHT 2003 CANON INC. CANOSCAN 9900F REV.0 FEB. 2003 PRINTED IN JAPAN (IMPRIME AU JAPON)