Lenovo IdeaCentre K220 - Manual (Page 43)

Hardware Maintenance Manual
40
Replacing hardware
9
Attention
Do not remove the computer cover or attempt any repair before
reading the “Important safety information” in the Safety and Warranty
Guide that was included with your computer or in the Hardware
Maintenance Manual (HMM) for the computer. To obtain copies of
the Safety and Warranty Guide or HMM, go to the Support Web site at
http://www.lenovo.com/support.
Note
Use only parts provided by Lenovo.
Removing the computer cover
Important
Turn off the computer and wait 3 to 5 minutes to let the computer
cool before removing the computer cover.
To remove the computer cover:
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down
your operating system, turn off all attached devices, and the computer.
2. Unplug all power cords from electrical outlets.
3. Disconnect all cables attached to the computer. This includes power
cords, input/output (I/O) cables, and any other cables that are
connected to the computer. Refer to “Locating connectors on the
front of the computer” and “Locating connectors on the rear of the
computer”.
4. Remove any locking devices that secure the computer cover.