Canon MF4500 Series Service Manual

44 4-1074-107Disassembly/Assembly > Controller System > Removing the Fixing Delivery/Paper Width Sensor PCBDisassembly/Assembly > Controller System > Removing the Fixing Delivery/Paper Width Sensor PCBBefore Removing the Fixing Delivery/Paper WidthSensor PCB1-1) Remove the left cover. (Duplex models) (Refer to page 4-31)1-2) Remove the left cover. (Single-sided models) (Refer to page 4-32)2-1) Remove the DADF unit and reader unit. (models with DADF) (Refer to page 4-40)2-2) Remove the SADF unit and reader unit. (models with SADF) (Refer to page 4-53)2-3) Remove the copyboard cover and reader unit. (models with copyboard) (Refer to page4-64)3-1) Remove the right cover. (Duplex models) (Refer to page 4-33)3-2) Remove the right cover. (Single-sided models) (Refer to page 4-34)4) Remove the front cover unit. (Refer to page 4-35)5) Remove the upper cover. (Refer to page 4-35)6-1) Remove the rear cover. (Single-sided models) (Refer to page 4-37)6-2) Remove the duplex feed unit. (Duplex models) (Refer to page 4-155)7-1) Remove the main controller PCB. (models with FAX) (Refer to page 4-99)7-2) Remove the main controller PCB. (models without FAX or NET) (Refer to page 4-100)7-3) Remove the main controller PCB. (models without FAX, with NET) (Refer to page 4-102)Removing the Fixing Delivery/Paper Width Sensor PCBNote:Refer to the below steps when removing a main controller mounting plate becausesteps differ according to model.Refer to steps 1-1-1), 1-1-2) and 1-1-3) for the models with FAX (MF4580dn/MF4570dn/MF4550d/MF4553d/MF4554d/MF4450/MF4452/MF4453)Refer to step 1-2) for the models without FAX or NET (MF4430/MF4550d/MF4410/MF4412/D550/D520)Refer to step 1-3) for the models without FAX, with NET (MF4420n)1-1-1) Remove the harness guide [1].• 1 screw (black TP) [2]• 1 wire saddle [3][1][2][3]1-1-2) Remove the anti-noise plate [1].• 1 screw (black TP) [2][2] [1]F-4-261F-4-262