Canon imageRUNNER ADVANCE 8105 Series Manual page 238

[Reference] The diodes respectively are added to the fixing roller side in the new type rear claw stopper unit
and to the pressure roller side in the new type static charge eliminator assembly. Because of this, the
electrical potential on the surfaces of the fixing roller and the pressure roller is adjusted, and the pressure
roller side is positively charged, which prevents the toner with negative potential from adhering (generation
of the offset toner )to the fixing roller.
Field Remedy
1) Turn off the main power SW and open the front cover to pull out the fixing/feed unit.
2) Open the feed unit [1] and remove the 2 screws [2] to detach the fixing assembly.
[Caution]
- Be careful not to damage the inner delivery sensor flag [3] when attaching the fixing assembly.
pg. 238