Service manual

Troubleshooting 3-5
A cabinet system has three exhaust fans at the top of the cabinet. They are powered
from a small power supply in the fan tray. This power supply also powers the server
control module at the bottom of the PCI card cage to allow remote access to the
system. A failure of the power supply is indicated only by the LEDs. No messages
are displayed.
There are two LEDs on the top panel: a fan LED and a power LED.
• When the fan LED (amber) is flashing, a cabinet fan needs replacing. Look to
see which fan appears broken (either not functioning at all; or it appears to be
slower than the others).
• When the power LED (green) is off, either the power supply in the fan tray is
broken or there is a power problem.