Chapter5 Removal and Replacement Procedures
Removing and Replacing the Fan Assembly
5-12
Cisco7609 Internet Router Installation Guide
OL-5079-04
Step 9 After ensuring that all wire connections are secure, reinstall the terminal block
cover.
Caution To prevent a short circuit or shock hazard after wiring the DC-input power
supply, reinstall the terminal block cover.
Caution In a system with dual power supplies, connect each power supply to a separate
input line. In case of a line failure, the second source will most likely still be
available.
Step 10 Remove the tape from the circuit breaker switch handle and restore power by
moving the circuit breaker switch handle to the On (|) position.
Step 11 Turn the power switch to the On (|) position on the power supply. Turning the
power switch on also engages a pawl that locks the power supply in the chassis.
Step 12 Verify power supply operation by checking that the power supply front panel
LEDs are in the following states:
•INPUT OK LED is green
•FAN OK LED is green
•OUTPUT FAIL LED is not lit
If the LEDs indicate a power problem, see the “Identifying Startup Problems”
section on page 4-3.
Removing and Replacing the Fan Assembly
This section describes how to remove and replace fan assemblies for the
Cisco 7609 Internet Router. A flat-blade or number 2 Phillips-head screwdriver is
required to perform this procedure.