Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 198
7600 series
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Removing and Replacing the Power Supply
Figure 5-74
Power leads
attached to
terminal block
( - ) Negative
(+) Positive
( ) Ground
Power
switch
Step 8
After ensuring that all wire connections are secure, reinstall the terminal block cover.
To prevent a short circuit or shock hazard after wiring the DC-input power supply, reinstall the terminal
Caution
block cover.
In a system with dual power supplies, connect each power supply to a separate input line. In case of a
Caution
line failure, the second source will most likely still be available.
Remove the tape from the circuit breaker switch handle, and restore power by moving the circuit breaker
Step 9
switch handle to the On (|) position.
Step 10
Verify power supply operation by checking that the power supply front panel LEDs are in the following
states:
•
•
•
If the LEDs indicate a power problem, see the
Installing a PWR-4000-DC Power Supply in a Cisco 7609 Router or a Cisco 7609-S Router
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Warning
Cisco 7600 Series Router Installation Guide
5-70
DC-Input Wire Connections for 2500 W DC-Input Power Supply
DC-input cable
I
0
INP UT
OK
Captive
installation
screw
INPUT OK LED is green
FAN OK LED is green
OUTPUT FAIL LED is not lit
FAN
OU TPU T
OK
FAI L
"Identifying Startup Problems" section on page
Chapter 5
Removal and Replacement Procedures
4-2.
OL-4503-26
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