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Cisco MGX 8950 Hardware Installation Guide
Release 3, Part Number 78-14147-02 Rev. A0, November 2002
Chapter 3 Installing a Cisco MGX 8950
Installation Procedures
Install the Upper Fan Tray
Complete the following steps to install the upper fan tray:
Tip If a component requires more than two screws to install it in the rack or cabinet, install the two bottom
screws first.
Step 1 Place the upper fan tray on a flat and stable surface (for example, a table top) and use mounting screws
and a Phillips-head screwdriver to attach the front-mounting brackets to the upper fan tray if you are
installing the system in a 23-inch rack.
Step 2 Place the upper fan tray on a flat and stable surface (for example, a table top) and use mounting screws
and a Phillips-head screwdriver to attach the mid-mounting brackets to the upper fan tray if you are
installing the system in a 19-inch rack.
Step 3 Position the upper fan tray, which occupies 1 RU of space, directly above the Cisco MGX 8950 switch.
Ensure that the air flow direction arrow on the back of the upper fan tray is pointing up, as shown in
Figure 3-14.
Figure 3-14 Fan Tray
Step 4 Use four mounting screws and a Phillips-head screwdriver to bolt the upper fan tray in the rack. See
Figure 3-4 for the correct placement of the upper fan tray. Verify that the base at the back aligns with the
top-rear edge of the card cage.
Install the Exhaust Plenum
Complete the following steps to install the exhaust plenum:
Tip If a component requires more than two screws to install it in the rack or cabinet, install the two bottom
screws first.
Step 1 Place the exhaust plenum on a flat and stable surface (for example, a table top) and use mounting screws
and a Phillips-head screwdriver to attach the front-mounting brackets to the exhaust plenum if you are
installing the system in a 23-inch rack.
Step 2 Place the exhaust plenum on a flat and stable surface (for example, a table top) and use mounting screws
and a Phillips-head screwdriver to attach the mid-mounting brackets to the exhaust plenum if you are
installing the system in a 19-inch rack.
Step 3 Position the exhaust, which occupies 3 RUs of space, directly above the upper fan tray.
66951
UP
AIR FLOW
DIRECTION