Using the optional security screw
Use the optional security screw to lock the service door to the bottom of the computer. When not in use the
security screw can be stored inside the battery bay.
To use the security screw:
1. Remove the battery (see Battery on page 36).
2. Remove the security screw from inside the battery bay (1) and insert it (2) to lock the service door in
place.
Hard drive
Description Spare part number
1-TB, 5400-rpm (Intel models only) 676521-001
750-GB, 5400-rpm 634250-001
500-GB, 7200-rpm 703267-001
500-GB, 5400-rpm 683802-001
500-GB, 5400-rpm, hybrid (8-GB SSD) (Intel models only) 732000-001
320-GB, 5400-rpm 645193-001
Before removing the hard drive, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 36).
5. Remove the service door (see
Service door on page 37).
38 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
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