Silicon Graphics 1450, Maintenance Manual

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3: Removing and Installing Baseboard Components
Removing DIMMs
To remove DIMMs, follow these steps;
Caution: Use extreme care when removing a DIMM. Too much pressure can damage the
socket slot. Apply only enough pressure on the plastic ejector levers to release the DIMM.
1. Observe the safety and ESD precautions at the beginning of this chapter.
2. Remove the memory module and place it component-side up on a nonconductive,
static-free surface. See “Removing the Memory Module” on page 55.
3. Gently push the plastic ejector levers down to eject the DIMM from its socket.
4. Hold the DIMM only by its edges, being careful not to touch its components or gold
edge connectors. Carefully lift it away from the socket and store it in an antistatic
package.
5. Repeat to remove other DIMMs as necessary.
Installing DIMMs
To install DIMMs, follow these steps:
Caution: Use extreme care when installing a DIMM. Applying too much pressure can
damage the socket. DIMMs are keyed and can be inserted in only one way.
Caution: Mixing dissimilar metals might cause memory failures later, resulting in data
corruption. Install DIMMs with gold-plated edge connectors only in gold-plated sockets.
1. Holding the DIMM only by its edges, remove it from its antistatic package.
2. Orient the DIMM so that the two notches in the bottom edge of the DIMM align
with the keyed socket on the memory module. See Figure 3-3.
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