Digital Book Organizer (630-2010) Maintenance Faxback Doc. # 7381 Storing Your Digital Book System When you're not using your Digital Book System, here's s how to store it. Keep two digital books or dummy books installed at all times to prevent dust from building up in the book slots. Store your other digital books in their carrying case. For extra protection, slide the plastic cover over the front of your Digital Book System. Cleaning Your Digital Book System To clean digital books, apply isopropyl alcohol with a cotton swab. To clean the Digital Book System, apply a mild household cleaner with a soft cloth. CAUTION: Spraying cleaners directly on the Digital Book System could damage its circuitry. (LB/all-08/12/94)