You can replace either of the two hot-swap redundant power supplies in an enclosure.
These redundant power supplies operate in parallel; one continues to power the node canister if the
other fails.
Before you begin
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:
If IBM® supplied the power cord(s), connect power to this unit
only with the IBM provided power cord. Do not use the IBM provided power cord for any other product. Do not open or
service any power supply assembly. Do not connect or disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during an electrical storm.
The product might be equipped with multiple power
cords. To remove all hazardous voltages, disconnect all power cords. For AC power, disconnect all
power cords from their AC power source. For racks with a DC power distribution panel (PDP),
disconnect the customer’s DC power source to the PDP.
- When connecting power to the product ensure all power cables are properly connected.
For racks with AC power, 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. For racks with a DC power distribution panel (PDP), connect the customer’s DC power source to
the PDP. Ensure that the proper polarity is used when attaching the DC power and DC power return
wiring.
- 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.
- Connect any equipment that will be attached to this product to properly wired outlets.
- 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.
- Do not attempt to switch on power to the machine until all possible unsafe conditions
are corrected.
- When performing a machine inspection: Assume that an electrical safety hazard is
present. Perform all ontinuity, grounding, and power checks specified during the subsystem
installation procedures to ensure that the machine meets safety requirements. Do not attempt to
switch power to the machine until all possible unsafe conditions are corrected. Before you open the
device covers, unless instructed otherwise in the installation and configuration procedures:
Disconnect the attached AC power cords, turn off the applicable circuit breakers located in the rack
power distribution panel (PDP), and disconnect any telecommunications systems, networks, and
modems.
- 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.
- Connect and disconnect cables as described in the following procedures when installing, moving,
or opening covers on this product or attached devices.
To disconnect:
- Turn off everything (unless instructed otherwise).
- Remove the power cords from the outlets.
- Remove the signal cables from the connectors.
- Remove all cables from the devices.
To connect:
- Turn off everything (unless instructed otherwise).
- Attach all cables to the devices.
- Attach the signal cables to the connectors.
- Attach the power cords to the outlets.
- Turn on the devices.
Sharp edges, corners and joints might be present in and around the
system. Use care when handling equipment to avoid cuts, scrapes and pinching. (D005)
Attention:
Although many components are hot-swappable, they are intended to be used only when
your system is not active (no I/O operations). If your system is powered on and processing I/O
operations, go to the management GUI and follow
the fix procedures. Initiating the replacement actions without the assistance of the fix procedures
can result in loss of data or loss of access to data.
Be careful when you are replacing the hardware components that are located in
the back of the system. Do not inadvertently disturb or remove any cables that you are not
instructed to remove.
Ensure that you are aware of the procedures for handling static-sensitive devices before you
replace the power supply.
About this task
Attention: Do not remove a power supply unit from an active enclosure until a
replacement power supply unit is ready to be installed. While a power supply unit is not installed,
airflow through the enclosure is reduced and the enclosure can overheat. It is recommended that a
replacement power supply is fitted within 5 minutes of replacing a faulty unit. Ensure that you read
and understand these instructions, and have the replacement available and unpacked before you remove
the existing power supply.