Enabling The Service Mode Before Removing A Fan Tray; Removing A Fan Tray From The Front - Cisco Catalyst 9400 Series Hardware Installation Manual
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Also See for Catalyst 9400 Series:
- System management configuration manual (458 pages) ,
- Installation note (32 pages) ,
- Troubleshooting manual (14 pages)
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Enabling the Service Mode Before Removing a Fan Tray
Enabling the Service Mode Before Removing a Fan Tray
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement
1030
Warning
No user-serviceable parts inside. Do not open. Statement 1073
Enabling the service mode is a precautionary step that we recommend you complete, before you remove a
fan tray from the chassis. In the service mode, the system pushes the fans to operate at full speed for 10
minutes, allowing the system to cool down sufficiently and sustain temperatures for the duration of servicing.
The system automatically turns off (self-terminates) the service mode after 10 minutes.
Important
Proceed with removing and replacing the fan tray immediately after the service mode self-terminates.
• If the service mode is not enabled before servicing, only two minutes of fan-less operation can be safely
• If the service mode is enabled prior to servicing, four minutes of fan-less operation can be assured for
In a system that is operational, enabling the service mode applies to removal or replacement procedures from
the front and the rear.
You do not have to enable this mode if you are removing and replacing the fan tray in a system that is not
powered on. The service mode is also not required if the fan tray is being replaced for having two or more
bad individual fans, because the fan tray will already be running at full speed.
To enable the service mode, enter the test platform hardware chassis fantray service-mode on command
in the privileged EXEC mode. For example:
Device# test platform hardware chassis fantray service-mode on
fantray service mode on
To turn off the service mode before the system-allotted 10-minute duration, enter the test platform hardware
chassis fantray service-mode off command in the privileged EXEC mode.
Removing a Fan Tray from the Front
When you remove a fan tray from the front, only the fan tray is removed, excluding the adapter. To remove
a fan tray from the front, follow the steps described here.
Warning
When removing the fan tray, keep your hands and fingers away from the spinning fan blades. Let the fan
blades completely stop before you remove the fan tray. Statement 258
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
86
assured in a normal environment.
all normal operating conditions, at full traffic load, in any configuration.
Removing and Replacing FRUs
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Troubleshooting
