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Cisco 7600 Series Router Installation Guide
OL-4503-26
Chapter 5 Removal and Replacement Procedures
Removing and Replacing the Power Supply
Figure 5-51 Power Supply Captive Installation Screws
Warning
Power supply captive installation screws must be tight to ensure protective grounding continuity.
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 5 Verify that all connections to the DC PEM are secure.
Step 6 Remove the tape from the circuit breaker switch handle, and restore power by moving the circuit breaker
switch handle to the On (|) position.
Step 7 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 4-2.
Installing a PWR-2700-DC/4 Power Supply in a Cisco 7604 Router
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Follow these steps to install a DC-input power supply:
Step 1 Power supply ground is required.
Note The system ground connection with the PWR-2700-DC/4 power supply in a Cisco 7604 router
is provided by the PWR-2700-DC/4 power supply ground. Additionally, you can connect a
system (earth) ground.
191812
PWR-1500-DC
INPUT OK
ALL FASTENERS MUST BE FULLY ENGAGED\
PRIOR TO OPERATING OF POWER SUPPY
FAN O K
OUTPUT FAIL
Captive installation screws
Status LEDs
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