Procedure
Step 1
Listen for the fans; you should immediately hear them operating. If you do not hear them, ensure
a) That the fan tray is inserted completely in the chassis
b) That the faceplate is flush with the chassis panel.
c) That the captive installation screws have been tightened sufficiently.
If the fan tray is not installed correctly, the fans may not run at all, or they may run at full speed.
When the fan tray operates at full speed, increased noise levels may be expected.
Important
Step 2
Check if the fan tray LED is lit and is green.
If the LEDs indicate a problem, see the
Troubleshooting the Fan Tray Assembly, on page 135
section for help
with isolating the problem.
What to do next
If after several attempts the fans do not operate, or if you experience trouble with the installation (for instance,
if the captive installation screws do not align with the chassis holes), contact Cisco Technical Assistance
Center (see
), for assistance.
Removing and Installing a Power Supply Module
Cisco Catalyst 9400 Series chassis supports field-replaceable AC-input and DC-input power supply modules.
This section describes how to remove and install both kinds of modules.
If you install modules of different types (AC input and DC input) and capacities, ensure that you have taken
Power Supply Module Installation Considerations
into account, and that all required conditions are met.
Power supply modules are hot-swappable
• In a redundant mode, you do not have to power down the switch to replace or upgrade the power supplies.
• In the combined mode, the module is still hot-swappable as long as the difference between total output
power and the total used power is greater than the capacity of the module being removed.
Total output power – Total used > Capacity of power supply module being removed.
When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with
upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the
insulation and conductor.
Statement 1002
Warning
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
96
Removing and Replacing FRUs
Removing and Installing a Power Supply Module