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Installing the Cisco NCS 4201
To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after the fan
Caution
tray has been removed or replaced.
Follow these steps to remove and replace the fan tray on the Cisco NCS 4201:
Step 1
Using a No. 2 Phillips screwdriver or your fingers, loosen the captive installation screws that secures the fan tray to the
chassis. The figure below shows the front of the Cisco NCS 4201 fan tray, including the captive installation screws.
Figure 9: Removing the Fan Tray From Cisco NCS 4201
Keep your fingers, clothing, and jewelry away from the fans. Always handle the fan tray by the handle.
Caution
Step 2
Pull the fan tray towards you, no more than 1 inch, to disengage it from the power receptacle on the midplane.
The fans might still be turning when you remove the fan assembly from the chassis. Keep fingers, screwdrivers,
Warning
and other objects away from the openings in the fan assembly's housing. Statement 263
Step 3
Wait at least 5 seconds to allow the fans to stop spinning. Then, pull the fan tray backward towards you and out of the
chassis.
As the fan tray slides out of the chassis, support the bottom of the fan tray with one hand and keep your other
Note
hand on the fan tray.
This completes the steps for removing the fan tray from the chassis.
To install a new fan tray, follow the steps in the
Installing the Fan Tray
section.
Cisco NCS 4201 Hardware Installation Guide
Removing the Fan Tray
11
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