Removing An E320 Fan Tray; Installing An E320 Fan Tray - Juniper E120 - RELEASE 11.1.X HARDWARE GUIDE 3-25-2010 Hardware Manual

E120 and E320 11.1.x Hardware Guide
However, if you do not replace the fan tray within 60 seconds, the system enters
thermal protection mode. For information about thermal protection mode, see
"Monitoring Temperatures of Modules" on page 85. You can monitor fan status by
observing the LEDs on the SRP module or on the fan tray behind the faceplate. For
complete LED information, see "Understanding Status LEDs to Troubleshoot" on
page 80.
NOTE: On the SRP module or fan tray, if the red FAN FAIL LED is illuminated, either
a critical or non-critical failure exists. Fan tray LEDs are located behind the fan tray
bezel.
CAUTION: If the FAN FAIL LED on the SRP module is illuminated and none of the
fans are spinning when you remove the fan tray, quickly power down the system
until a new fan tray is available. Operating a router with inadequate air circulation
can damage the modules.

Removing an E320 Fan Tray

To remove the fan tray:
1.
2.
WARNING: Do not place your fingers near the fans when removing the fan tray. The
blades might still be moving.
NOTE: Loosen the top and bottom thumbscrews (using a No. 2 Phillips screwdriver,
if necessary)
3.
4.
5.

Installing an E320 Fan Tray

To install the fan tray:
74
Replacing Fan Trays
Place a flathead screwdriver in the groove where the top bezel meets the chassis
on the top of the system, and lever the top bezel off the front of the system.
With an appropriate screwdriver, loosen the captive screws located at the corners
of the fan tray.
Pull the fan tray halfway out of the shelf until it stops on the safety catch.
Pull both red safety handles upward while gripping the sides of the fan tray and
pull the tray out slightly until the safety catch is released.
Place one hand under the fan tray and the other on the front handle and continue
to pull the fan tray out of the chassis.
Use two hands to hold the fan tray after it comes out of the chassis.