7. Installing the Fixing HeaterInstall the heater by reversing the steps used to remove it with the following in mind:a. Do not touch the surface of the heater.b. Orient both heaters so that the sides with longer heater wires are toward the front.c. Install the main heater (790 W) to the right and the sub heater (410 W) to the leftwhen viewing from the front.d. While viewing from the rear of the copier, connect the faston on the right to the mainheater and the faston at the top to the sub heater.8. Removing the Fixing Upper Roller1) Slide out the fixing/feeding unit from the copier.2) Remove the fixing/feeding assembly front cover.3) Open the fixing/delivery assembly.4) Remove the flywheel.5) Remove the fixing upper cover, and remove the fixing cleaning belt; then, clean thesilicone oil pan, and remove the fixing upper unit.6) Remove the main heater and the sub heater.7) Remove the two mounting screws w used to hold the fixing cleaning belt assemblyq in place, and release the web.Figure 6-2168) Remove the two mounting screws e, and remove the heater holder r at the rear.Figure 6-217ee rqw wCOPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 6 FIXING SYSTEM6-27