1. Install another power supply unit, see “Install the power supply unit” on page 131.
2. If you are instructed to return the component or optional device, follow all packaging instructions, and
use any packaging materials for shipping that are supplied to you.
Install the power supply unit
Follow this procedure to install the power supply unit.
S001
DANGER
Electrical current from power, telephone, and communication cables is hazardous.
To avoid a shock hazard:
• Connect all power cords to a properly wired and grounded electrical outlet/source.
• Connect any equipment that will be attached to this product to properly wired outlets/sources.
• When possible, use one hand only to connect or disconnect signal cables.
• Never turn on any equipment when there is evidence of fire, water, or structural damage.
• The device might have more than one power cord, to remove all electrical current from the
device, ensure that all power cords are disconnected from the power source.
S002
CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
S035
CAUTION:
Never remove the cover on a power supply or any part that has this 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.
Chapter 3. Hardware replacement procedures 131
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