Electrical Safety - IBM eServer 240 xSeries User Reference Manual

Electrical safety

For your safety, do the following before removing the cover:
1. Turn off the server and any attached devices, such as printers, monitors, and
2. Unplug all the power cords from electrical outlets.
3. Disconnect all communication cables from external receptacles.
4. Disconnect all cables and power cords from the back of the server.
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IBM xSeries User's Reference
Note: You do not need to turn off the server and attached devices before you
remove the cover to install or remove a hot-plug PCI adapter (see
"Installing a hot-plug PCI adapter" on page 56), to replace a hot-swap
fan (see "Replacing a hot-swap fan assembly" on page 83), or to check
the diagnostic LED panel.
external drives.
Note: Reconnect the cables or power cords only after you reassemble the
server and put the cover back on.
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CAUTION:
Never remove the cover on a power supply or any part that has the
following label attached.
Hazardous voltage, current, and energy levels are present inside any
component that has this label attached. There are no serviceable parts
inside these components. If you suspect a problem with one of these
parts, contact a service technician.