4–46 COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)MECHANICAL SYSTEM5) Open the fixing shutter t with the screw driverinserted into the hole u, after lifting the fixingshutter.Figure 4-7046) Pull out the upper fixing unit slowly toward therear.Caution:Do not touch the fixing roller.3. Removing the Fixing RollerCaution:Wait until the heater and the heater connectorhave cooled adequately before starting thefollowing work:1) Remove the upper fixing unit. (See “Removingthe Upper Fixing Unit.”)2) Remove the front and rear cover.3) Remove the front wire (stopper).4) Pull toward rear the fixing roller.5) Remove the two screws q, and pull out thecleaning roller to the front.Figure 4-7056) Remove the four screws w, and remove thefixing cover (both front and rear).Figure 4-706(front)Figure 4-706(rear)7) Open the two wire saddles e, and remove thetwo fastons r; then, remove the heater.Figure 4-7071224 36 75