3-22 Sun Fire X4100/X4100 M2 and X4200/X4200 M2 Servers Service Manual • August 2009
Caution – Ensure that the thermal grease in the syringe supplied with the CPU is
pliable and not stiff. If your syringe of grease has aged, the grease might be too stiff
to adequately spread out and ensure thermal conductance.
d. Using one syringe of thermal grease (0.2 ml/0.5 g), carefully apply grease to
the top of the CPU in three lines in the pattern shown in
FIGURE 3-15.
Note – Two syringes of thermal grease are supplied with the new CPU, but use only
one syringe for each CPU. Apply the grease in the pattern shown in FIGURE 3-15.
FIGURE 3-15 Required Pattern for Thermal Grease Application
Note – System cooling might be affected by dust and contaminant build-up.
Therefore, you should open and check systems approximately every six months (or
more often in dirty operating environments). Check system heatsinks, fans, and air
openings. If necessary, clean systems by carefully brushing, blowing, or vacuuming
contaminants from the system.
7. Align the CPU in the socket as shown in
FIGURE 3-14.
a. Gently insert the CPU pins into the socket.
CPU surface
Lines of thermal grease
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