COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)I. OUTLINEA. OutlineWhen the PRNT* signal arrives from the printer board*1 and the scanner motorbecomes ready, the DC controller PCB starts printing operation.In the case of pick-up from the cassette, paper is fed into the printer unit by the pick-up roller and is moved by the feeding roller; in the case of pick-up from the multifeeder,on the other hand, the multifeeder pick-up roller feeds paper into the printer unit.The orientation of the paper is corrected by the registration roller so that it will notmove askew; the paper is then stopped and kept in wait. Then, the paper is started onceagain so that its leading edge and the leading edge of the image on the intermediatetransfer drum will match; the paper is further moved through the transfer, separation, andfixing/delivery assemblies all the way to the face-down tray or the face-up tray.*1 Reader controller PCB (when making prints with the reader unit installed).Figure 5-101CHAPTER 5 PICK-UP/FEEDING SYSTEM5-1Face-down delivery rollerFace-down trayIntermediate transferdrumUpper fixingrollerLower fixing rollerMultifeeder pick-uprollerPick-up rollerRegistrationrollerCassette 1 Separation rollerFeedingrollers 1Face-up trayFace-up deliveryrollerFeeding roller 2Separation rollerPick-up rollerCassette 2SecondarytransferbeltPhotosensitive drumDownload free service manual at http://printer1.blogspot.com