Canon imageRUNNER ADVANCE 8105 Series Manual page 232

4) Remove the claw (2 pcs.), and then remove the cooling fan duct.
5) Remove the screw (2 pcs.) and the connector, and then remove the scanner in the direction of an
arrow.
[Caution] Do not touch the scanner unit with hands other than the both edge (where the unit is set to the
guide). Especially be careful not to touch the scanner unit PCB and the mirror.
pg. 232