4-2
Chapter 4: System maintenance
4.1.1 Replacing the PSU/cooling module
Replace the defective PSU/cooling module immediately, but only if you have the replacement.
WARNING!
Although the system can still operate with a defective PSU/cooling module, it is not
recommended to use it for an extended period of time.
NOTE:
For more information, contact your system vendor.
To replace the PSU:
1. Shut down the system, turn off the PSU/cooling module, then unplug the power cord.
2. Loosen the thumb screw that secures the extraction handle to the chassis.
3. Pull down the extraction handle to dislodge the PSU/cooling module from the backplane
connectors, then gently pull the PSU/cooling module from the system. If the system is mounted to
the rackmount, carefully support its weight with the rack while removing the module.
