Installing The T640 Quiet Lower Front Fan Tray; Figure 131: Removing The Quiet Lower Front Fan Tray - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
246
Simultaneously pull the two releases on the cable management system. Lift it up and
3.
outward to lock it in place to access the lower fan tray.
Rearrange the PIC cables in the cable management system. For more information
4.
about proper cable arrangement, see
page 191.
Loosen the captive screws on the corners of the fan tray faceplate.
5.
Grasp both sides of the fan tray, and pull the fan tray out of the chassis approximately
6.
1 to 3 inches.
WARNING: To avoid injury, keep tools and your fingers away from the fans
as you slide the fan tray out of the chassis. The fans might still be spinning.
Press the two latches located on each side of the fan tray up to release the fan tray
7.
from the chassis.
When the fans stop spinning, place one hand under the fan tray to support it and pull
8.
the fan tray completely out of the chassis.

Figure 131: Removing the Quiet Lower Front Fan Tray

Installing the T640 Quiet Lower Front Fan Tray

To install a quiet lower front fan tray (see
Attach an electrostatic discharge (ESD) grounding strap to your wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Locate a replacement quiet lower fan tray labeled
2.
Grasp the quiet lower front fan tray by its handles and insert it straight into the chassis.
3.
Press the two latches located on each side of the quiet lower front fan tray up, and
4.
insert the fan tray straight into the lower front fan tray slot.
Tighten the captive screws on each side of the quiet lower front fan tray faceplate to
5.
secure it in the chassis.
"Maintaining T640 PICs and PIC Cables" on
Figure 132 on page 247):
FAN-T-FBOT-S LOWER FANTRAY
Copyright © 2013, Juniper Networks, Inc.
.