Samsung SCX-4720FN - Manual (Page 281)

I NSTALLING M ACHINE O PTIONS C.4
7 Replace the control board cover.
8 Reconnect the power cord and printer cable, and turn the
machine on.
Removing a Memory DIMM
1 Follow steps 1 through 2 on page C.2 to access the control
board.
2 Push the latches at both ends of the DIMM slot away from
the DIMM. Pull out the DIMM.
3 Place the DIMM in its original packaging or wrap it with a
sheet of thin metal, such as aluminium foil, and store it in a
box.
4 Follow from step 7 on page C.4.