Controller PCA The controller PCA is located on the back of the unit. 1 Remove the back and left covers (see page 300 and page 301). 2 Unplug 11 connectors (callout 1). 1 2 3 4 2 2 2 2 5 2 Figure 156. Controller PCA 3 Remove four hex screws from the two C-link cable connectors (callout 2). 4 Remove two screws from the right side of the PCA (callout 3). 5 Release the two plastic retaining posts from the left side of the PCA (callout 4). 6 Pull the PCA out from the chassis. Notes about reinstalling: Ensure that the DIP switches on the PCA are in the Normal Setting (off) (callout 5). For information on DIP switch settings, see page 473. EN 2,000-sheet input unit 307