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Attention:
An unoccupied drive bay or PCI card slot without a cover, shield, dummy tray, filler, or any
other protection might impact the EMI integrity and cooling of the server, which might result in overheating
or component damage.
• Leave adequate space around the server to ensure that the server cooling system works well. Leave
approximately 50 mm (2 inches) of open space around the front and rear of the server. Do not place
objects in front of the fans.
• For proper cooling and airflow, install the server cover before you turn on the server. Operating the server
with the server cover removed might damage server components.
• Properly route the cables. For some options, such as PCI cards, follow the cabling instructions that come
with the options in addition to the instructions in this manual.
• If your server has air ducts or air baffles, do not remove them while the server is running. Operating the
server without the air ducts or air baffles might cause the CPU to overheat.
• Ensure that you replace a failing fan as soon as possible.
Preparing your server and removing the server cover
CAUTION:
Do not open your server or attempt any repair before reading and understanding “Read this first: safety
information” on page iii and “Getting familiar with important guidelines” on page 39.
Before installing or removing any hardware component in your server, do the following to prepare your server
and remove the server cover:
Note:
Wait three to five minutes to let the server cool before removing the server cover.
1. Remove all external media from the drives. Then, turn off all attached devices and the server.
2. Disconnect all power cords from electrical outlets.
3. Disconnect all cables that are connected to the server.
4. Remove any locking device that secures the server cover, such as a padlock or an integrated cable lock.
See “Server locks” on page 14.
5. Remove the two thumbscrews, press the cover-release button, and slide the cover backward to remove
the server cover.
.
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