HP Cisco MDS 9120 Cisco MDS 9500 Series Hardware Installation Guide (OL-17467- - Page 141
Removing a DC Power Supply from the Cisco MDS 9509 Director
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Chapter 2 Installing the Cisco MDS 9500 Series Removing and Installing a Power Supply or PEM Send documentation comments to [email protected]. 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 Step 2 Step 3 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 Figure 2-34.) Disconnect the DC cables from the terminal block in the following order: • Positive (+) • Negative (-) • Ground Caution 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. Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046 OL-17467-02 Cisco MDS 9500 Series Hardware Installation Guide 2-61