Sun Oracle Fire X4440, Service Manual

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Chapter 4 Servicing Motherboard Components 4-45
d. Attach an antistatic wrist strap.
See Section 2.8, “Performing Electrostatic Discharge and Antistatic Prevention
Measures” on page 2-10 .
e. Remove the top cover.
See Section 2.9, “Removing the Top Cover” on page 2-12 .
2. Remove the mezzanine tray.
See Section 4.2.1, “Removing the Mezzanine Tray” on page 4-13 .
3. Remove the heat sink on top of the failed CPU.
Each screw must be turned no more than one 1/2 turn before moving over to the
other screw and doing the same. Continue to turn each screw one 1/2 turn,
moving back and forth between the two screws until both screws are removed.
4. Remove the failed CPU.
5. Clean off the old thermal interface material from the heat sink and CPU, using
the supplied alcohol wipe. (
FIGURE 4-19
)
6. Set the heat sink aside.
7. Place the new CPU in the socket.
Make sure the orientation is correct.
Be careful not to contact the gold fingers within the socket.
FIGURE 4-19
Installing a CPU
8. Engage the lever by rotating downward and pressing it into the catch.
9. Using the supplied grease syringe, empty the syringe on to the CPU in a star
shaped pattern. (
FIGURE 4-20
)