Removing The Cover - Lenovo ThinkStation Hardware Maintenance Manual

Machine types: 4105, 4157 and 4217, 4155, 4158 and 4218
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Removing the cover

CAUTION:
The heat sink and microprocessor might be very hot. Turn off the computer and
wait three to five minutes to let the computer cool before opening the computer
cover.
To remove the computer cover:
1. Remove any media from the drives and shut down your operating system.
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
5. Disengage the cover latch 1 and remove the cover. Place the cover on a flat
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Hardware Maintenance Manual
Turn off all attached devices. Turn off the computer.
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 94 and "Rear connectors" on page 95.
computer cover. Open the keylock if it is in the locked position.
surface.

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Thinkstation d20Thinkstation s20

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