Unplug the main machine power cord before starting the following procedure.
Before you install the 500-sheet finisher, the optional bridge unit (D386) must be installed.
Unpack the finisher and remove the tapes.
Install the unit holder [A] ( x 3 - M4 x 14).
Install the support brackets [B] ( x 2 each: M4 x 20)
Install the support bracket covers [C] ( x 1 each: M3 x 8)
Install the 500-sheet finisher [A].
Install the holder bracket [B] ( x 1; M3 x 6).
Connect the finisher cable [C].
Install the shift tray [A] ( x 2 - M3 x 8).
Turn on the main power switch and check the finisher operation.