3Com CS/2500 manual Each pin must be inserted properly into its socket

Upgrades 5-13

Replacing Memory	If you ever need to replace memory chips on the motherboard, follow
Chips	this procedure:

1Make sure server power is off and the power cord is unplugged.

2Remove the cover, as described in “Removing the Cover” on page 5-6.

The memory chips are located on the motherboard, near the front of the server, as shown in Figure 5-5. As shipped, all RAM is stored on four chips (each with a 1 MB x 4 configuration) in slots U5, U7, U9, and U11.

3Remove the old memory chips that you want to replace.

Using the thumb and forefinger of one or both hands, grasp the front and back of the chip and gently rock it back and forth until it becomes loose. Lift the chip out of its socket.

As you remove the chip, note exactly how it was oriented. The beveled top edge of the chip faces the left side of the chassis (when viewed from the front of the server).

4Remove a new memory chip from its antistatic foam shipping pad.

If the pins have been bent, carefully straighten them. Orient the chip with the beveled corner closest to the front of the server.

All memory chips must have the same orientation.

CAUTION: Failure to place the memory chips correctly will cause the self-test diagnostics to fail and possible server or memory chip damage when the server is powered on.

5Being careful to line up the pins with the socket, firmly push each memory chip into its socket until it snaps into place.

CAUTION: Be sure that no pins are bent under the body of the chip.

Each pin must be inserted properly into its socket.

6Repeat steps 4 and 5 for the remaining chips.

7Replace the cover, as described in “Replacing the Cover” on page 5-15.