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Hardware Maintenance Manual - Lenovo

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Opening the cover<br />

Attention: Read “Safety information” on page 153 and “Handling electrostatic<br />

discharge-sensitive devices” on page 156 before opening the cover.<br />

To open the cover:<br />

1. Shut down your operating system, remove any media (diskettes, CDs, or tapes)<br />

from the drives, and turn off all attached devices and the computer.<br />

2. Unplug all power cords from electrical outlets.<br />

3. Disconnect all cables attached to the computer. This includes power cords,<br />

input/output (I/O) cables, and any other cables that are connected to the<br />

computer.<br />

4. Remove the floor stand, if attached.<br />

5. If a cover lock is installed, unlock the cover.<br />

6. Press inward on the two buttons and rotate the top cover upward as illustrated.<br />

Chapter 6. Replacing FRUs 25

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