Figure 94 System Controller Board Assembly; Figure 95 System Controller Board - Xerox 5400N - Phaser B/W Laser Printer Service Quick Reference Manual

10.Remove the two screws that secure the parallel connector to the frame assembly.
11.Remove the three screws that secures the System Controller PWB to the frame
assembly. Remove the System Controller PWB.
6
5

Figure 94 System Controller Board Assembly

11
10

Figure 95 System Controller Board

Replacement
Reinstall the components in the reverse order.
306 Phaser 5400 Laser Printer Service Guide