CAUTION:CAUTION: This equipment is designed to permit the connection of the earthed conductor of the DC supply circuit to the
earthing conductor at the equipment. If this connection is made, all the following must be met:
This equipment must be connected directly to the DC supply system earthing electrode conductor or to a bonding
jumper from an earthing terminal bar or bus to which the DC supply system earthing electrode conductor is connected.
This equipment must be located in the same immediate area (such as adjacent cabinets) as any other equipment that
has a connection between the earthed conductor of the same DC supply circuit and the earthing conductor, and also the
point of earthing of the DC system. The DC system must be earthed elsewhere.
The DC supply source is to be located within the same premises as the equipment.
Switching or disconnecting devices must not be in the earthed circuit conductor between the DC source and the point of
connection of the earthing electrode conductor.
Removing and replacing a Flexible Slot power supplyRemoving and replacing a Flexible Slot power supply
PrerequisitesPrerequisites
Before replacing a power supply, review the following:
Power supply warnings and cautions
DC power supply warnings and cautions
If you are replacing a DC power supply:
Make sure that you have a Phillips No.2 screwdriver available.
Identify the wire color and corresponding wire slots on the DC power supply:
Wire colorWire color DescriptionDescription Wire slotWire slot
Red Positive return wire RTN
Black Negative input wire -48V
Green + yellow Ground wire Ground
About this taskAbout this task
WARNING:WARNING: To reduce the risk of personal injury from hot surfaces, allow the power supply, power supply blank, or dual slot
power supply adapter to cool before touching it.
CAUTION:CAUTION: To prevent improper cooling and thermal damage, do not operate the server unless all bays are populated with
either a component or a blank.
ProcedureProcedure
1. Power down the server.
2. To remove an AC power supply, do the following:
a. Release the power cords, wires, and cables from the strain relief strap.
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