Canon MF4500 Series Service Manual

44 4-404-40Disassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Unit and Reader UnitDisassembly/Assembly > Document Exposure/Feeder System > Removing the DADF Unit and Reader UnitLocation of Copyboard Cover and Reader Unit(MF4420n/MF4410/MF4412/D520)[1][4][2][3][5]No. Name Service Parts No. Reference[1] Copyboard Cover - - -[2] Reader Unit FM4-6921FM4-6937MF4420n/MF4410/MF4412D520 p. 4-64[3] Copyboard Glass FL2-5621 - p. 4-66[4] CIS UNIT FK3-1153 - p. 4-72[5] Reader Motor FM4-6916 - p. 4-70F-4-67T-4-44Before Removing the DADF Unit and Reader Unit1) Remove the left cover. (Duplex models) (Refer to page 4-31)Removing the DADF Unit and Reader Unit1) Close the DADF Unit + Reader Unit.2) Remove the Hinge Face Cover [1].• 1 shaft [2][1][2]3) Open the DADF Unit and the Reader Unit.4) Remove the grounding wire [1].• 1 screw (black TP) [2]5) Remove the 4 connectors [3] and 2 flat cables [4].• 2 ferrite cores (small) [5]• 1 ferrite core (large) [6]6) Disengage the 2 detached grounding wires [1], 4 harnesses [3] and 2 flat cables [4] fromthe harness guide [A].F-4-68