Lenovo ThinkCentre M90q, Hardware Maintenance Manual

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12. Reconnect the external cables to the corresponding connectors on the computer, and then reconnect
the power cord to the electrical outlet.
Note: If a locking device is available, use it to lock the computer.
Hard disk drive and hard disk drive bracket
Prerequisite
Before you start, read Chapter 1 “Important safety information” on page 1 and print the following
instructions.
Attention: The hard disk drive is sensitive. Inappropriate handling might cause damage and permanent loss
of data. When handling the hard disk drive, observe the following guidelines:
• Replace the hard disk drive only for upgrade or repair. The hard disk drive is not designed for frequent
changes or replacement.
• Before replacing the hard disk drive, make a backup copy of all the data that you want to keep.
• Do not touch the contact edge of the hard disk drive. Otherwise, the hard disk drive might get damaged.
• Do not apply pressure to the hard disk drive.
• Do not make the hard disk drive subject to physical shocks or vibration. Put the hard disk drive on a soft
material, such as cloth, to absorb physical shocks.
Replacement procedure
1. Remove the computer cover. See “Computer cover” on page 67.
2. Disconnect the hard disk drive cable from the hard disk drive.
3. Remove the hard disk drive and the bracket.
Chapter 6
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Hardware removal and installation
69