7. Position the new heat sink and fan assembly on the plastic retention bracket so
that the four screws are aligned with the posts on the system board. Tighten
the four screws 1 to secure the heat sink and fan assembly to the system
board.
8. Connect the heat sink and the fan assembly cable to the microprocessor fan
connector on the system board.

9. Go to Chapter 4, “Completing the parts replacement,” on page 47.

Replacing the primary hard disk drive
Attention
Do not open your computer or attempt any repair before reading the “Important safety
information” in the Safety and Warranty Guide that was included with your computer. To
obtain a copy of the Safety and Warranty Guide, go to the Support Web site at
http://www.lenovo.com/support.
This section provides instructions on how to replace the primary hard disk drive.
Important

When you receive a new hard disk drive, you also receive a set of Product

Recovery discs. The set of Product Recovery discs will enable you to restore the

contents of the hard disk to the same state as when your computer was
originally shipped from the factory. For more information on recovering

factory-installed software, refer to “Recovering software” in your User Guide.

To replace the primary hard disk drive:
1. Remove the computer cover. See “Removing the cover” on page 12.
2. Locate the primary hard disk drive. See “Drive specifications” on page 20.
Figure 21. Replacing the heat sink and fan assembly
28 Hardware Installation and Replacement Guide