Troubleshooting Your System 149
Troubleshooting System Cooling Problems
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
page149.

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 Server Administrator
Diagnostics" on page 161.
2
Open the system. See "Opening and Closing the System" on page 70.
CAUTION: The cooling fans are hot-pluggable. To maintain proper cooling while
the system is on, only replace one fan at a time.
3
Locate the faulty fan indicated by the LCD display or diagnostic software.
For the identification number of each fan, seeFigure 3-9.