Removal and replacement procedures 26
These symbols, on power sup plies or system s, indicate that t he equipment is supplied
by multiple sources of power.
WARNING: To reduce the risk of injury from electric shock, remov e all power cords
to completely disconnect power from the system.
Pre-installation instructions
Perform th e steps below bef or e you open the server or before you remove or rep lace any component:
1. Turn off the s erver and all the per ipherals conn ected to it.
2. Refer to the Powering down the server section in this chapter for detailed instructions on how to
completely power down the server .
3. Unplug all cables from power outlets to avoid exp osure to high energy level s t h a t may cause
burns if parts are short-circuit ed by metal objects such as tools or jewelry. If necessary, l a bel
each cable for reassembly.
4. Disconnect telecommunication cables to avoid exposure to shock hazard from ringing volta ges.
5. Open the server according to the instructions described in the System covers section in this
chapter.
6. Follow the ESD precautions listed previously in this chapter when handling a server component.
WARNING: Failure to properly turn off the server before you op en i t or before you start
Post-installation instructions
Observe th e following items after installing or removing a server c omponent:
1. Make sure that y ou insta l l all components according to the described step-by-step instructions.
2. Make sure not to leave loose tools or parts inside the server.
3. Reinstall any expansion board(s), peripheral(s), board cover(s), and system cable(s) that have
previously been removed.
4. Reinstall th e system covers.
5. Connect all external cables and the AC power cord to the system.
6. Press the power button on the front panel to turn on the server.
CAUTION: Do not operate the server for more than 10 minutes with the access panel and drives
removed. Otherwise, improper cooling airflow may damage system components.
Powering d own the server
To power down the server:
1. Shut down the server as dir ected by the operat i n g system documentation.
2. If necessary, press and hol d the power button until the server shut s off.
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