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6. If the system board has a modem daughter card installed, remove it from the failing system board and
install it on the new system board. See “Replacing the modem” on page 76.
7. Remove the heat sink and microprocessor from the failing system board and install them on the new
system board. See “Replacing the microprocessor” on page 70.
Note: You might have to install a new retention module on the new system board.
8. Position the new system board in the chassis so that the screw holes are aligned with the mounting studs.
9. Install and tighten the screws that secure the system board to the chassis.
10.Reconnect all cables to the system board. See “System board locations” on page 68.
11.Go to “Completing the FRU replacement” on page 81
Replacing a hard disk drive
This section provides instructions on how to replace the hard disk drive.
Important
When a new hard disk drive is installed, a set of Product Recovery discs might be required. The set of
Product Recovery discs enable the contents of the hard disk to be restored to the same state as when the
computer was originally shipped from the factory. For more information on recovering factory-installed
software, refer to "Recovering Software" in the User Guide.
To replace the hard disk drive:
1. Open the computer cover. See “Opening the cover” on page 68.
2. Disconnect the power cable from the optical drive.
3. Place your nger on the tab located on the front of the hard disk drive and push upward. Then press
inward on the side tabs and pivot the hard disk drive upward to remove.
4. Remove the failing hard disk drive from the chassis.
5. Disconnect the signal and power cables from the hard disk drive.
6. Remove the hard disk drive from the plastic bracket by exing the sides of the bracket enough to slide
it free of the hard disk drive.
7. To install the new hard disk drive into the plastic bracket 1 , ex the bracket and align the pins on the
bracket with the holes in the hard disk drive. Do not touch the circuit board 2 on the bottom of the
hard disk drive.
Chapter 8. Replacing FRUs 73