CHAPTER 8 INSTALLATIONCOPYRIGHT © 1999 CANON INC. CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 8-5B. Mounting the DrumThe photosensitive drum is susceptable to light; if exposed to room light, it can cause whitespots or black lines on the copy images. As such, be quick in performing the following work.WorkTake out the drum unit from the box, andremove the light-blocking sheet.Set the drum unit in the copier, and fix it inplace using the knob that held the dummydrum.Move the grip to clean the corona wire of thedrum unit two to three times.Set the developing assembly in the copier,and engage it.Step1234RemarksTake care not to damage the drum.Slide the drum unit straight along the railsinto the copier.The front cover may be left open.Drum unitLight-blockingsheetDownload Service Manual And Resetter Printer at http://printer1.blogspot.com