HP Apollo a6000 Chassis Maintenance and Service Guide

Removal and replacement procedures 31
When removing or replacing a fan, observe the following guidelines:
• Five fans ship standard with the chassis. To boot and operate the chassis, all five fans must be installed
and operating.
• Each fan contains two rotors. If one rotor fails, the fan is degraded and continues to operate. The health
LED on the degraded fan changes to red and a management event is logged. The chassis can operate
normally with one degraded fan (one failed rotor) until that fan is replaced.
• Always complete the removal and replacement of the new fan within 60 seconds to maintain proper
airflow in the chassis.
• Be sure to order the correct fan spare part number for your chassis. For more information, see "Chassis
system and mechanical components (on page 15)."
Remove the component as indicated.
To replace the component, reverse the removal procedure.
I/O module
To remove the component:
1. Power down the server associated with the I/O module ("Power down the server" on page 21).