Cisco 7000 Series Replacement Instructions Manual page 11

Removing the Blower
Cisco 7000 Air Filter and Chassis Blower Replacement Instructions 11
Purple (+24V)
Captive Allen-head screws
Figure 7 Chassis Blower
Remove the existing chassis blower as follows:
Step 1:
On each installed power supply, turn the power switch to OFF (O) and
unplug the power cord from AC source.
Step 2:
Remove the front panels according to the procedure in "Removing and
Replacing the Front Chassis Panels" on page 6.
Step 3:
Locate the blower (see Figure 1), which is mounted to the bottom of the
backplane, and the blower power connector (see Figure 8), which is
connected to the backplane under the white power bus bar. Note the
orientation of the power connector and its orientation in the backplane port,
with the flat side down.
Blower power
connection
Black (ground)
Blower