Installing Internal Options; Opening The Cover - Lenovo 6423 Installation Manual

Installing internal options

Opening the cover

To open the computer cover:
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down your
2. Unplug all power cords from electrical outlets.
3. Disconnect the cables attached to the computer. This includes power cords,
4. Remove any locking devices, such as a cable lock or padlock that secures the
12
ThinkStation Hardware Installation and Replacement Guide
Important
Read "Handling static-sensitive devices" on page 4 before opening the
computer cover.
operating system. Turn off all attached devices. Turn off the computer.
Important
Turn off the computer and wait 3 to 5 minutes to let the computer cool
before opening the computer cover.
input/output (I/O) cables, and any other cables that are connected to the
computer. See "Locating controls and connectors on the front of your
computer" on page 5 and "Locating connectors on the rear of your computer"
on page 6.
computer cover. See Chapter 5, "Security features," on page 47.