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Cisco 7500 Series Installation and Configuration Guide
OL-5008-03 B0
Chapter 6 Maintaining Your Cisco 7507 and Cisco 7507-MX Router
Maintenance Procedures for the Cisco 7507 and Cisco 7507-MX
Figure 6-11 Chassis Blower (Cisco 7507 and Cisco 7507-MX)
Warning
Before working on a chassis or working near power supplies, unplug the power cord on AC units;
disconnect the power at the circuit breaker on DC units.
Use the following procedure to remove the existing chassis blower:
Step 1 On each installed power supply, turn off the power switch and unplug the power cable from the power
source.
Step 2 Remove the front panels. (See Step 1 through Step 6 in the procedure for removing front cover panels in
the “Removing and Replacing the Cisco 7507 and Cisco 7507-MX Front Chassis Panels” section on
page 6-6.)
Step 3 Locate the blower (see Figure 6-8), which is mounted to the bottom of the backplane. Also, locate the
blower power connector, which is connected to a port in the backplane under the white power bar. Note
the orientation of the power connector and its orientation in the backplane port.
Black (ground)
Purple (+24V)
Captive Allen-head screws
Blower power
connection
Blower
H1386a
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