Before Replacing CRUs
Installing and Replacing System Components
5-3
Risk of explosion if battery is replaced by an incorrect
type. Dispose of used batteries according to the
instructions provided with the battery.
When replacing a CRU, always observe the following
guidelines.
• Do not remove a CRU when its safe-to-remove LED is blinking. This
indicates that the CRU is operating in simplex mode (its duplex partner
is not functional). Removing the CRU would cause the system to fail.
• When necessary, see your system administration documentation for
instructions in how to identify a failed component and take it offline
before servicing it.
• Read the entire procedure so that you fully understand it. If any part
of the procedure is not clear, see “Getting Help” on page -xi.
1. A quick-reference diagram on the inside of each
CPU- I ⁄ O enclosure cover labels the internal
components of the enclosures. Refer to the diagram
when replacing a CRU to determine the route of
cables from the CRU to the connectors on the main
board of the enclosure.
2. For some procedures, you take a single CPU-I/O
enclosure offline. For others, you take both CPU-I/O
enclosures offline at the same time. In those cases,
you must shut down the system before performing the
procedure.
3. When taking both CPU-I/O enclosures offline at the
same time, you must schedule downtime to shut
down the system.
Tools
Although you can replace some CRUs without the use of tools, others call for the use
of a number 2 or number 1 Phillips head or slot head screwdriver.
To Next Page
Loading...
