Dell PowerEdge R900 - Manual (Page 138)

138 Troubleshooting Your System
5 Install a new power supply. See "Installing a Power Supply" on page 69.
If the problem persists, see "Getting Help" on page 165.
Troubleshooting System Cooling
Problem
Systems management software issues a fan-related error message.
Action
Ensure that none of the following conditions exist:
• Ambient temperature is too high.
• External airflow is obstructed.
• Cables inside the system obstruct airflow.
• An individual cooling fan has failed. See "Troubleshooting a Fan" on
page 138.
Troubleshooting a Fan
Problem
• System-status indicator is amber.
• Systems management software issues a fan-related error message.
• Front panel LCD indicates a problem with the fan.
Action
CAUTION: Only trained service technicians are authorized to remove the system
cover and access any of the components inside the system. Before performing any
procedure, see your Product Information Guide for complete information about
safety precautions, working inside the computer and protecting against
electrostatic discharge.
1 Run the appropriate diagnostic test. See "Using PowerEdge Diagnostics"
on page 149.
2 Open the system. See "Removing the Top Cover" on page 60.
CAUTION: The cooling fans are hot-pluggable. To maintain proper cooling
while the system is on, only replace one fan at a time.