Sun Microsystems Sun Fire X4100 - Manual (Page 185)

Chapter 4 Maintaining the Sun Fire X4200 Server 4-55
FIGURE 4-47 Removing a DIMM
9. Remove all CPUs from the motherboard:
a. Hold down on the top of the heatsink to prevent it from tipping unevenly
while you alternately loosen the two spring-loaded mounting screws that
secure the heatsink to the motherboard. Turn the screws 180-degrees at a time,
then remove the screws when they are detached. See
FIGURE 4-48 and FIGURE 4-49 .
FIGURE 4-48 Location of the Heatsink Screws
The four screws
are circled in red.