Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 224

Removing and Installing the DC-Input Power Supplies
Installing a 950 W DC-Input Power Supply
Warning Before performing any of the following procedures, ensure that power is removed from the DC
circuits. To ensure that all power is removed, locate the circuit breakers or fuses on the DC power
lines that service the DC circuits. Turn OFF the DC power line circuit breakers and remove the DC
power line fuses. Statement 322
To install a 950 W DC-input power supply, follow these steps:
Ensure that the system (earth) ground connection has been made. For ground connection installation
Step 1
instructions, see the
Note
Verify that power is off to the DC circuit connected to the DC PEM for the power supply that you are
Step 2
installing. As an added precaution, place the appropriate safety flag and lockout devices at the source
power circuit breaker, or place a piece of adhesive tape over the circuit breaker handle to prevent
accidental power restoration while you are working on the circuit.
Grasp the power supply handle with one hand. Place your other hand underneath the power supply, as
Step 3
shown in
supply is fully seated in the bay.
Step 4 Tighten the power supply captive installation screws. (See
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
Caution
a line failure, the second source should still be available.
Verify that all connections to the DC PEM are secure.
Step 5
Remove any safety flags, lockout devices, or tape from the circuit breaker switch handle, and restore
Step 6
power by moving the circuit breaker switch handle to the On (|) position.
Step 7 Verify the power supply operation by ensuring that the power supply front panel LEDs are in the
following states:
•
•
•
If the LEDs indicate a power problem, see the
Catalyst 6500 Series Switches Installation Guide
4-18
"Establishing the System Ground" section on page
The system (NEBS) ground serves as the primary safety ground for the Catalyst 6503 and
Catalyst 6503-E chassis that are equipped with DC-input power supplies. The DC-input power
supplies for these chassis do not have a separate ground. Make sure that the chassis you are
working on has the system (NEBS) ground installed.
Figure 4-10. Slide the power supply into the power supply bay. Make sure that the power
INPUT OK LED is green
FAN OK LED is green
OUTPUT FAIL LED is not lit
Chapter 4 Removal and Replacement Procedures
3-52.
Figure 4-9.)
"Identifying Startup Problems" section on page E-3.
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