Scanner controller board 1 Remove the copy processor board. See page 111. 2 Remove the flatbed back cover. See page 113. 3 Remove five screws and remove the RFI shield plate. See page 150. 4 Disconnect 11 connectors and three ribbon cables. 5 Release two tabs (callout 1) and remove one cable guide (callout 2). Hint It is not necessary to remove the cables from the cable guide. 2 1 Figure 150. Scanner controller board (1 of 4) 6 Remove two screws (callout 3) and the upper rail (callout 4). 4 3 5 4 Figure 151. Scanner controller board (2 of 4) 162 Chapter 6 Removal and replacement C8523-90921