Upgrading the Rear Fan Tray in an Operational T1600 Router
 | Caution: To maintain proper cooling, do not operate the T1600 router with the rear fan tray removed for more than one minute. |
To determine if you need to replace the rear fan tray, see Overview of Preparing to Upgrade and Integrate an Operational T1600 Router.
The rear fan tray required for the converted T1600 router contains eight fans. To upgrade the rear fan tray:
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- Replace the rear fan tray with the model required for a converted T1600 router. Use the standard replacement procedure described in the T1600 Core Router Hardware Guide.
- Display the status of the fans in the router by
issuing the show chassis environment command. The output
is similar to the following:
user@host> show chassis environment... Rear Tray Top fan OK Spinning at normal speed Rear Tray Second fan OK Spinning at normal speed Rear Tray Third fan OK Spinning at normal speed Rear Tray Fourth fan OK Spinning at normal speed Rear Tray Fifth fan OK Spinning at normal speed Rear Tray Sixth fan OK Spinning at normal speed Rear Tray Seventh fan OK Spinning at normal speed Rear Tray Bottom fan OK Spinning at normal speed ...
