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CPU/Memory Boards and Components 3-17
3
3.4.4.2 Installing a Module
To maximize performance when installing UltraSPARC modules on a
CPU/Memory board, use all CPU 0 connectors on the lowest numbered slot to
the highest numbered slot. After this, if there are modules remaining, use the
CPU 1 connectors in the same order.
1. Take the UltraSPARC module out of the protective packaging and inspect
for dust on the connectors.
If necessary, clean the connectors with a dry, stiff toothbrush.
2. Remove the applicable CPU/Memory board as indicated in Section 3.4.1,
“Removing a Board.”
3. Inspect the board module mating surface. If the surface requires cleaning,
use a dry, stiff toothbrush to clean debris from the mating surfaces.
Note – There are miniature silver alignment pins on the compression
connectors which, when the module is properly seated, align with related
receptacles on the mating surfaces of the CPU/Memory board. In addition,
there is a gold standoff mounted on the CPU/Memory board opposite the
module’s smaller board connector. This acts as a standoff for the module as
well as an alignment pin.
4. Align the module over the two board receptacles using the single standoff
as well as the alignment pins located on the module compression
connector as a guide.
See Figure 3-10 and Figure 3-11.
5. Holding the module by the edges, rest it on the board standoff, aligning
the compression connectors with the screws.
Firmly but gently press the module straight down until the standoff post
snaps into place and the module connectors are fully seated.
6. Tighten the 3/32 hex screws of the module in two stages:
a. Tighten to 3 inch-pounds in the tightening sequence as follows: