A control enclosure midplane assembly must
be replaced only by a trained service provider.
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 a 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.
- 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.
- 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: The control enclosure midplane assembly must be replaced only by a
trained service provider. Complete this procedure only if instructed to do so by a service
action or the IBM support center. If you have a single control
enclosure, this procedure requires that you shut down your system to replace the control enclosure
midplane assembly. If you have more than one control enclosure, you can keep part of the system
running. However, you will lose access to the volumes that are on the affected I/O group and any
volumes in other I/O groups that depend on the drives in the affected I/O group. If the system is
still performing I/O requests in all the I/O groups, schedule the replacement during a maintenance
period or other time when the I/O can be stopped.
Be careful when you are replacing hardware components in the back of the system that you 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 remove the enclosure.
To replace a control enclosure midplane assembly, complete
the following steps.