NEC HX4600, User Manual, Page: 82 / 196

4-14 Upgrading Your System
Installing DIMMs
When properly installed, the DIMM module is oriented at an angle of 90 degrees
relative to the memory board.
1. Power off the system and remove the left side panel as described earlier.
2.
Remove the metal panel supporting the memory board. The support panel is secured
to the chassis by a black fastener. Release the fastener by slowly pulling it towards
you (listen for two clicks). Grasp the left side of the support panel and swing it
away from the chassis to remove it. Set the support panel aside for later installation.
Note:
Observe static precautions. Use an antistatic wrist strap.
Hold DIMMs only by their edges.
3. Open the ejectors on both sides of the memory board (see Figure 4-7). Holding the
memory board by its edges, carefully pull it out until the edge connectors are free.
Place the memory board on an antistatic surface.
Figure 4-7. Memory Board Ejectors
4.
Holding the DIMM module only by the edges, remove it from its antistatic package.
5. DIMMs are keyed so they can only be inserted one way. Position the DIMM over
the socket on the board (see Figure 4-6, A and B). The notches in the bottom edge
of the DIMM mate with the raised bumps in the DIMM socket.
6.
Press down evenly on the DIMM until it seats correctly. The white levers on the
sockets are not "tools" to aid in the insertion, only to keep the DIMMs in place and
to aid in extraction. The levers should click in place once the DIMM is fully
inserted.
7.
Repeat the above steps to install any remaining DIMMs.