Sun Microsystems 817-4054-15, Servise Manual

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Chapter 9 CPU/Memory Boards 9-15
9.3.3 Installing DIMMs
Install one bank completely on each board before installing the remaining banks on
any board.
Note – All banks must have the same size DIMMs. However, DIMMs from different
manufacturers are interchangeable in a single bank if the DIMMs all have the same
capacity and speed. Sort the DIMMs into banks using the same size DIMMs.
Caution –
The system and DIMMs are sensitive to static electricity. To prevent
damage to the DIMMs, make sure you are wearing a grounded wrist strap when
handling them. Always place components on a grounded ESD mat close to the
system.
1. Remove the CPU/Memory board.
See Section 9.2.1, “Removing a CPU/Memory Board” on page 9-4 .
2. Place the CPU/Memory board on an ESD mat on a work surface.
3. Remove the four screws retaining the DIMM cover. Remove the cover
(
FIGURE 9-10
) .
4. Carefully remove the new DIMM from its protective packaging and place it on an
antistatic surface.
The DIMM bag makes a good antistatic surface.
5. Press down on the ejector levers at both ends of the DIMM connector slot that
will receive the new DIMM.
The connector slot will not accept the DIMM unless the levers are in the insert
(open) position.
6. Align the short-side key and the long-side key on the DIMM with the short side
and long side of the DIMM connector.
Note – If you are installing four DIMMs, insert the DIMMs into the same bank.