Removing A Dc Power Supply From The Cisco Mds 9509 Director - Cisco MDS 9500 Series Hardware Installation Manual

Chapter 2 Installing the Cisco MDS 9500 Series
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Removing a DC Power Supply from the Cisco MDS 9509 Director

The DC power supply for the Cisco MDS 9509 Director is 2500 W.
Note The DC return connection to this system is to remain isolated from the system frame and chassis (DC-I).
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
To remove a DC power supply from the Cisco MDS 9509 Director, follow these steps:
Step 1 Ensure that all power is off by locating the circuit breaker on the panel board that services the DC circuit.
Switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off
position.
Remove the two screws securing the terminal block cover and slide the cover off the terminal block. (See
Step 2
Figure
Disconnect the DC cables from the terminal block in the following order:
Step 3
•
•
•
Caution
Warning
OL-19587-01
2-34.)
Positive (+)
Negative (-)
Ground
The DC return connection (Negative (-)) to this system is to remain isolated from the system
frame and chassis (DC-I). Loosen the captive screw on the power supply.
When installing or replacing the unit, the ground connection must always be made first and
disconnected last. Statement 1046
Removing and Installing a Power Supply or PEM
Cisco MDS 9500 Series Hardware Installation Guide
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