Keep NVRAMs away from any objects that can cause static electricity. Static electricity can damage NVRAM data.
Remove the controller box. (Controller Box (MP 501/601)
)
Disconnect the connector on the controller box [A].
Remove the fax unit [A].
Remove the cap [A].
Remove the slot cover [A].
Remove the controller box cover [A].
The screw [B] is a small screw. Be careful not to use the wrong screw when installing the controller box cover.
Remove the controller board [A] with the BiCU [B].
Be careful not to damage the backside of the controller board [A] and the BiCU [B].
Remove the controller board [A] from the BiCU [B].
Remove the two guide rails [A] from the controller board [B]. (hook×2)
Remove the two NVRAMs [A] 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.
