Cisco GS7000 Installation And Configuration Manual page 139

Important:

Make sure that the fiber tray fits into the two guide slots in the fiber track
near the power supplies.

Make sure that the fingers and locking tabs on the other end of the fiber tray
are inserted between the fiber track and the aluminum node housing.
5 Push down on the fiber tray housing until the fiber tray snaps into place and is
fully inserted into the node as shown in the following illustration.
OL-29936-01
Expanded Fiber Tray Installation
117