Main relay PCA This PCA is located behind the developer/imaging drum bias supply. 1 Remove the rear cover (see page 243). 2 Remove five screws from the sheet metal cover plate and lift it off. 3 Remove the developer/imaging drum bias supply (see page 291). 4 Unplug eight connectors (callout 1). 2 2 1 2 2 2 3 2 Figure 144. Main relay PCA 5 Remove two screws (callout 2). Note Take note of where the interlock tabs come out of their casing so that you can reinstall them correctly (callout 3). 6 Lift the PCA up and out. EN Rear assemblies 293