COPYRIGHT © 2000 CANON INC. 2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000CHAPTER 4 IMAGE FORMATION SYSTEM4-51 P7.2 Photosensitive DrumPoints to Note When Handling the Photosensitive DrumThe machine’s photosensitive drum is made of high-sensitivity amorphoussilicon, and its sensitivity can start to deteriorate depending on how andwhere it is placed, requiring the following:1. Whenever the process unit is removed from the machine or the photo-sensitive drum is removed from the process unit, be sure to protect thephotosensitive drum against light. Use the photosensitive drum protec-tive sheet or wrap six or more sheets of A3 or larger copy paper.2. Do not place the process unit or the photosensitive drum in an area sub-ject to the direct rays of the sun.3. Do not place the process unit or the photosensitive drum in an area sub-ject to high or low temperature or humidity or where temperature or hu-midity tend to fluctuate rapidly.4. Do not place the process unit or the photosensitive drum in an area sub-ject to dust, ammonium gas, or organic solvent/gas.The foregoing requirements commonly apply to all photosensitivedrums.7.2.1 Removing the Drum Unit1) Open the front cover, and slide out thehopper unit.2) Remove the process unit. (See p. 4-54P.)3) Remove the primary charging assemblyand the pre-transfer charging assembly.4) Remove the potential sensor assembly.5) Remove the potential sensor rail stay.6) Remove the three mounting screws [1],and detach the gear plate [2].F04-702-01[2][1][1]
