Lenovo ThinkCentre M55e Hardware Maintenance Manual - Page 93
Removing the cover
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Removing the cover Important Read Chapter 2, "Safety information," on page 3 and "Handling electrostatic discharge-sensitive devices" on page 6 before opening the cover. 1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down the operating system, and turn off all attached devices. 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. 4. Remove any locking devices such as a padlock that secure the cover. 5. If the cover is secured with thumbscrews, remove them. 6. Press the button near the front of the computer cover and slide the cover to the rear. Chapter 8. Replacing FRUs (desktop computers) 87