Replacing The T640 Quiet Upper Front Fan Tray; Removing The T640 Quiet Upper Front Fan Tray; Figure 128: Installing The Quiet Rear Fan Tray - Juniper T640 Hardware Manual

Replacing the T640 Quiet Upper Front Fan Tray

Copyright © 2013, Juniper Networks, Inc.

Figure 128: Installing the Quiet Rear Fan Tray

The upper front fan tray is located above the FPC card cage. Each quiet front fan tray
weighs about 17.8 lb (8.1 kg). The fan trays are hot-insertable and hot-removable. The
quiet upper and lower fan trays are not interchangeable with each other. The quiet upper
front fan tray is labeled FAN-T-FTOP-S UPPER FANTRAY
Removing the T640 Quiet Upper Front Fan Tray on page 243
1.
Installing the T640 Quiet Upper Front Fan Tray on page 244
2.

Removing the T640 Quiet Upper Front Fan Tray

To remove a quiet upper 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.
Loosen the captive screws on the corners of the fan tray faceplate.
2.
Chapter 17: Replacing T640 Router Hardware Components
.
Figure 129 on page 244):
243