4-2 Chapter 4: System maintenance
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, 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 then unplug the power cord.
2. Loosen the screw that secures the extraction handle to the chassis.
3. Pull down the extraction handle to dislodge the PSU from the backplane connectors, then gently
pull the PSU from the system. If the system is mounted to the rackmount, carefully support its
weight with the rack while removing the module.
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