Lenovo 7515L2U, Hardware Maintenance Manual

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Opening the computer cover
Attention
Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” in the
ThinkCentre Safety and Warranty Guide that came with
your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide , go to:
http://www.lenovo.com/support
This section provides instructions on how to open the computer cover.
CAUTION:
Turn off the computer and wait three to five minutes to let the computer cool
before opening the computer cover.
To open the computer cover, do the following:
1. Remove any media from the drives, shut down your operating system, and
turn off all attached devices and the computer.
2. Unplug all power cords from electrical outlets.
3.
Disconnect the cables attached to the computer. This includes power cords,
input/output (I/O) cables, and any other cables that are connected to the
computer. See “Locating connectors on the front of your computer” on page
124 and “Locating connectors on the rear of your computer” on page 125.
4. Remove any locking devices, such as a cable lock that secures the computer
cover.
5. Press the buttons on the sides of the computer and pivot the computer cover
upward to open.
Figure 41. Opening the computer cover
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Hardware Maintenance Manual