FOREWORDSystem ConfigurationThis printer unit is designed to accommodate the following accessories:• Upper 500 Sheet Cassette CS-82 A4R/A5R/B5R/LTRR*1• Duplex Unit-A1 *1• 1000-Sheet Paper Deck-D1 *2,3• 2×500-Sheet Paper Deck-C1 *2,3• 2000-Sheet Paper Deck-N1 *2,3• ACC Controller-A1 *2,3• ACC Interface Board-B1 *3• ACC Interface Unit-B1 *3(ACC controller-A1, ACC Interface Board-B1 and Plate)• Sorter-H1 (requires the Attachment Kit for STR-H1 if the printer unit is mounted toa Rack-A1) *2, *3• Network Color PS/PCL Board-A1 *2• Token Ring Board TB83*1: Covered in this Service Manual*2: Covered in a separate Service Manual.*3:If the printer unit is installed as a copier,• Requires the ACC Interface Unit-B1,• Requires the ACC Controller-A1.If the printer unit is installed as a copier and a printer,• Requires the ACC Controller-A1 and the ACC Interface Board-B1.iiiCOPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)Download free service manual at http://printer1.blogspot.com