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Figure 77. Screws that secure the heat sink and fan assembly
7. Lift the failing heat sink and fan assembly off the system board.
Notes:
• You might have to twist the heat sink and fan assembly gently to free it from the microprocessor.
• Do not touch the thermal grease while handling the heat sink and fan assembly.
8. Position the new heat sink and fan assembly on the system board so that the four screws are aligned
with the holes in the system board.
Note: Ensure that the heat sink and fan assembly cable is toward the microprocessor fan connector on
the system board.
9. Follow the following sequence to install the four screws to secure the new heat sink and fan assembly.
Do not over-tighten the screws.
a. Partially tighten screw
b. Partially tighten screw
10. Connect the heat sink and fan assembly cable to the microprocessor fan connector on the system
board. See "Parts on the system board" on page 6.
11. Lower and position the heat sink fan duct on the top of the heat sink and fan assembly until it snaps into
position.
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P320 User Guide
1
, then fully tighten screw
3
, then fully tighten screw
2
, and then fully tighten screw
4
, and then fully tighten screw
1
.
3
.
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