Replace a PA-7080 Fan Tray
Table of Contents
Replace a PA-7080 Fan Tray
Lean how to replace a PA-7080 fan tray.
The following procedure describes how to replace
a PA-7080 fan tray.
If one fan on a fan tray fails, the fault
LED on the fan tray will turn red. If this occurs, replace the fan
tray immediately to avoid service interruption. If two or more fans
fail on one or both fan trays, the firewall shuts down. You can replace
a fan tray while the firewall is powered on; however, you must replace
it within 45 seconds and you can only replace one fan tray at a
time (two total) or the thermal protection circuit will automatically
shut down the firewall.
- Put the provided ESD wrist strap on your wrist ensuring that the metal contact is touching your skin. Then attach (snap) one end of the ground cable to the wrist strap and remove the alligator clip from the banana clip on the other end of the ESD grounding cable. Plug the banana clip end into one of the ESD ports located on the front of the chassis before handling ESD sensitive hardware. For details on the ESD port location, see PA-7080 Front Panel (AC).When removing a fan tray, first pull the fan tray out about 1 inch (2.5cm) and wait 10 seconds. This allows enough time for the working fans to stop spinning.Remove the replacement fan tray from the packaging and have it ready.Identify the failed fan tray by viewing the LEDs. The FAN LED on the SMC card and the FAULT LED on the failed fan tray will both change to red in the event of a failure.Grasp both handles on the failed fan tray and gently push them outward as you slide the fan tray toward you about 1 inch. Wait 10 seconds to allow enough time for the working fans to stop spinning.Pushing the handles outward does not eject the fan tray; it unlocks the tray from the chassis. Only a small amount of pressure is required to operate the release handles.
![]()
Verify that the front set of fans have stopped spinning and then continue to pull the fan tray outward while supporting the back of the tray. Note that the fan tray weighs over 15 lbs., so be prepared to support the weight of the tray.Align the new fan tray with the empty fan tray slot rails and gently slide it in to the chassis until it stops. You can do this by pushing on the handles or by pushing on the front panel of the fan tray. As you fully seat the tray into place, the handles will click, indicating that the tray is locked in place. The fan will then power on.If the thermal protection circuit powers off the chassis due to over heating or failed fans, you will need to turn the power off to the chassis and then restore power before the chassis will power on again. On an AC model, you can turn off the power switches located on the back of the chassis and then turn them back on or you can disconnect the power cords and plug them back in. On a DC model, shut down the DC circuit to the chassis and then restore power.Verify that the fan tray is operational by noting the status of the fan tray LEDs and the FAN LED on the SMC (slot 6). The Fault LED on the fan tray turns off, the Power LED on the fan tray illuminates green, and the FAN LED on the SMC changes from red to green. You can view the status of the fan trays by running the CLI command:admin@PA-7080> show system environmentals fan-trayTo view the status of each fan on a fan tray, run the following command:admin@PA-7080> show system environmentals fansThe fan tray status is managed by the SMC in slot 6, so the output from the above command will show that both fan trays are in slot S6.
