Sanyo MBC-550 Series User Manual page 296

6) The eight memory chips will fit into the sockets in
column C.
The order that you place the chips does
not matter. How you insert the chips does. Look at a
chip. One end is flat, one end has a half circle cut in
it.
This half circle should be facing toward the
panel. All lettering on these chips and the ones in
column C should be reading in the same direction.
7) Place all the pins of the chip on one side of the
socket row and gently push in as far as possible. Push
the other side down till you hear a click. Be careful
not to break the pins. If you have trouble, please
consult an authorized Sanyo computer dealer.
8) After you have placed all eight chips in column C,
replace the board and connect the plugs.
9) Check to make sure everything is secure before you
replace the cabinet cover.
10) Restore power to your unit.
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