Removing The Heat Sink-Fan Assembly; Figure - Sun Microsystems Ultra 27 Service Manual

Replacing the Heat Sink and CPU
Grasp the heat sink by its plastic mounting bracket, and, while gently pulling upward, slowly
6
wiggle the assembly back and forth to break the adhesive seal of the thermal compound.
Remove the heat sink-fan assembly from the chassis.
7
Place the heat sink on its side and on a flat surface to prevent the thermal compound from
8
contaminating other components and the work space.
Depress the CPU socket retainer lever and slightly pull the lever outward (away from the CPU) to
9
free the lever from its retaining clip (see
When you have released the lever from the retaining clip, lift the lever to its fully open (upright)
10
position.
This action releases the pressure on the hinged CPU socket retainer. The top of the CPU has
some residual thermal compound.
Lift the unhinged side of the CPU socket retainer to its fully open (upright) position.
11
This action exposes the CPU. The CPU is mounted to a PCB that is keyed (notched) on two
opposite sides.
80 Sun Ultra 27 Workstation Service Manual • June 2009, Revision A

Removing the Heat Sink-Fan Assembly

FIGURE 3–31

Figure

3–32).