Removing An Mx2020 Fan Tray - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide

Removing an MX2020 Fan Tray

472
CAUTION: To prevent overheating, install the replacement fan tray
immediately after removing the existing fan tray.
To remove the upper or lower fan trays (see
Figure 221 on page 473):
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Reposition the DC cable manager, if necessary, before removing the upper or lower
2.
fan tray:
Unwrap any cables on the DC cable manager, and remove the cables from the tray.
Arrange the cables so that they do not block the front of the cable manager and
tray, and secure them with temporary fasteners so that they are not supporting
their own weight as they hang from the connector.
Loosen the two captive screws on each side of the fan tray access panel and then
3.
open it.
Loosen the two captive screws on the fan tray faceplate.
4.
While grasping the handle, press and hold the latch until the status LED turns off. Pull
5.
the fan tray out approximately 1 to 3 inches until it stops.
NOTE: The fan trays are interchangeable and are hot-insertable and
hot-removable.
Press and hold the latch a second time to disengage fan operation. Place one hand
6.
under the fan tray for support while pulling the fan tray completely out of the router.
CAUTION: The double latch system is a safety mechanism. Damage to
the fan tray will occur if you do not hold the latch while removing the fan
tray.
Place the fan tray on an antistatic mat or in an approved ESD bag.
7.
Figure 220 on page 473 and
Copyright © 2015, Juniper Networks, Inc.