Open the right door.
By-pass tray cover ( By-pass Paper Size Sensor and By-pass Paper Length Sensor)
Open the duplex door [A].
Right door cover [B] ( x 4)
Right door rear cover [A] ( x 3)
Remove the screw at the front side ( x 1).
Remove the cover [A] (2 hooks).
Remove the screw at the rear side.
Release the front [A] and rear [B] arms ( x 1 each).
By-pass bottom tray [A]