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)
8. Turn off the power switch and disconnect the dc power cable from the failed
power supply.
9. Turn off the -48V disconnect device.
10. Remove the dc power supply from the bay
140 IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide
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