Cisco 7500 Series Configuration Manual page 217

Chapter 6 Maintaining Your Cisco 7507 and Cisco 7507-MX Router
Listen for the blower; you should immediately hear it operating. In a noisy environment, it might not be
Step 2
possible to hear the blower operating. If this is the case, place your hand near the exhaust vent and feel
for air coming from the vent. If you do not hear the blower or feel any air coming from the exhaust vent,
turn off the system power and do the following:
a. Remove the top and bottom front chassis panels. (See Step 1 through Step 6 in the procedure for
removing front cover panels in the
Front Chassis Panels" section on page
b. Check the blower power connector to ensure that it is fully seated in the backplane port; pinch the
sides of the connector and push it firmly into the port.
c. Check the two wires between the blower and the power connector: the red or purple +24V wire and
the black ground wire. Ensure that they have not pulled out of the power connector; pinch each wire
near the back connector and push it firmly into the connector.
Replace the front chassis panels. (See Step 1 through Step 9 in the procedure for replacing front
d.
cover panels in the
Panels" section on page
Turn the power supplies back on, and check again for proper blower operation.
Step 3
If after several attempts the blower does not operate, or if you experience trouble with the installation,
contact a service representative for assistance.
This completes the blower replacement procedure.
OL-5008-03 B0
"Removing and Replacing the Cisco 7507 and Cisco 7507-MX
6-6.)
"Removing and Replacing the Cisco 7507 and Cisco 7507-MX Front Chassis
6-6.)
Cisco 7500 Series Installation and Configuration Guide
Maintenance Procedures for the Cisco 7507 and Cisco 7507-MX
6-19