User guide

Troubleshooting 4-19
CAUTION: Do not operate the RA4100 for extended periods of time with either
power supply location open. Internal cooling airflow will be disrupted without a
power supply or blank cover installed in both locations. This could cause
overheating of internal components and possible data loss. Retain the blank
power supply cover for reuse in case it is necessary to remove one of the
supplies.
3. With the handle fully open, insert the replacement power supply into the
opening and slide it in along the rails as far as it will go
.
4. Pivot the handle closed until it snaps into place . This secures the
power supply in the chassis.
2
1
Figure 4-24. Installing the power supply
5. Plug the power cord into the new power supply.
The status LEDs on both power supplies and the fault LEDs on the front panel
of the RA4100 should now be green, indicating that power supply redundancy
has been restored.
Replacing the Fan Assembly
If the LED on the Fan Assembly is amber, a problem has been detected in at
least one of the three fans in the array. The entire module is hot-pluggable and
can be replaced without affecting normal system operation.