Removing The T640 Standard Or Quiet Front Fan Trays - Juniper T640 Hardware Manual

Removing the T640 Standard or Quiet Front Fan Trays

Copyright © 2013, Juniper Networks, Inc.
WARNING: Use this procedure only for routers that are powered off.
The upper front fan tray is located above the FPC card cage, and the lower front fan tray
is located below the air filter. Each standard front fan tray weighs about 18.6 lb (8.4 kg).
Each quiet front fan tray weighs about 17.8 lb (8.1 kg).
To remove the standard front fan trays (see
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to an approved site ESD grounding point. See the instructions for your site.
Loosen the captive screws on the corners of the faceplate of one of the fan trays.
2.
Grasp the handles and pull the fan tray halfway out of the chassis.
3.
Place one hand under the fan tray to support it and pull the fan tray completely out
4.
of the chassis.
Repeat the procedure to remove the remaining front fan tray.
5.
To remove the quiet upper front fan tray (see
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to an approved site ESD grounding point. See the instructions for your site.
Loosen the captive screws on the corners of the fan tray faceplate.
2.
Grasp both sides of the fan tray, and pull the fan tray out of the chassis approximately
3.
1 to 3 inches.
Press the two latches located on each side of the fan tray up to release the fan tray
4.
from the chassis.
Place one hand under the fan tray to support it and pull the fan tray completely out
5.
of the chassis.
To remove the quiet lower front fan tray:
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to an approved site ESD grounding point. See the instructions for your site.
Loosen the captive screws on the corners of the fan tray faceplate.
2.
Grasp both sides of the fan tray, and pull the fan tray out of the chassis approximately
3.
1 to 3 inches.
Press the two latches located on each side of the fan tray up to release the fan tray
4.
from the chassis.
Place one hand under the fan tray to support it and pull the fan tray completely out
5.
of the chassis.
Chapter 10: Installing the T640 Router Without a Mechanical Lift
Figure 69 on page
Figure 70 on page
118):
118):
117