• Keep NVRAMs away from any objects that can cause static electricity. Static electricity can damage NVRAM data.

  1. Remove the rear cover. (Rear Cover)
  2. Remove the left cover. (Left Cover)
  3. Remove the FCU (if the machine has the fax unit) (Refer to the FSM for Fax Option) 
  4. Remove the controller box cover [A] with the HDD [B].
  5. Pull out the controller board [A].
  6. Remove the guide rails [A] from the old controller board, and install them on the new controller board.

  7. Remove the two used NVRAMs from the old controller board, and install them on the new controller board.

    • Make sure the NVRAM [A] is installed at the correct mounting location and orientation. Install the NVRAM so that the indentation on the NVRAM corresponds with the mark [B] on the controller board.
    • Incorrect installation of the NVRAM will damage both the controller board and NVRAM.