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DANGER
When working on or around the system, observe the following
precautions:
Electrical voltage and current from power, telephone, and
communication cables are hazardous. To avoid a shock hazard:
v Connect power to this unit only with the provided power cord. Do
not use the provided power cord for any other product.
v Do not open or service any power supply assembly.
v Do not connect or disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during an electrical
storm.
v The product might be equipped with multiple power cords. To
remove all hazardous voltages, disconnect all power cords.
v Connect all power cords to a properly wired and grounded electrical
outlet. Ensure that the outlet supplies proper voltage and phase
rotation according to the system rating plate.
v Connect any equipment that will be attached to this product to
properly wired outlets.
v When possible, use one hand only to connect or disconnect signal
cables.
v Never turn on any equipment when there is evidence of fire, water,
or structural damage.
v Disconnect the attached power cords, telecommunications systems,
networks, and modems before you open the device covers, unless
instructed otherwise in the installation and configuration
procedures.
v Connect and disconnect cables as described in the following
procedures when installing, moving, or opening covers on this
product or attached devices.
To disconnect:
a. Turn off everything (unless instructed otherwise).
b. Remove the power cords from the outlets.
c. Remove the signal cables from the connectors.
d. Remove all cables from the devices.
To connect:
a. Turn off everything (unless instructed otherwise).
b. Attach all cables to the devices.
c. Attach the signal cables to the connectors.
d. Attach the power cords to the outlets.
e. Turn on the devices.
(D005a)
9. Turn off the power switch and disconnect the power cord from the failed power
supply.
Chapter 5. Replacing components 85