Ricoh Aficio SP C820DN

3. Unplug the cable from the Ethernet port, and then cover it with the protective cap.
BMV160S
4. Loosen the screw and remove the slot cover.
BMV161S
The removed cover will not be reused.
5. Remove the 5 screws securing the controller board.
BMV268S
The removed screws will be used to secure the controller board again later.
6. Holding the handle, carefully pull out the controller board.
Slide the controller board completely out, and then place it on a flat surface such as a table.
Installing the Interface Units
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