Chapter 2 Installing the Cisco MDS 9500 Series
Removing and Installing a Power Supply or PEM
Se 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 ck - d o c @ c i s c o . c o m .
Step 2 Ensure that the system (earth) ground connection has been made. See the “System Grounding” section on page
Step 3 Grasp the power supply handle with one hand, place your other hand underneath the power supply, and slide the power supply into the power supply bay, ensuring that it is fully seated in the bay.
Step 4 Tighten the captive screw on the power supply to 8
Step 5 Remove the two screws securing the terminal block cover and slide the cover off of the terminal block.
Note Use 90°C copper conductors for North American installations.
Step 6 Loosen the screws inside the terminal block and attach the DC cables to the screws. The wire must be copper, and sized per local and national installation requirements.
Step 7 Connect the DC cables to the terminal block in the following order:
•Ground
•Negative
•Positive (+)
Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046
Caution The DC return connection (Negative
Step 8 Reinstall the terminal block cover after ensuring that all cable connections are secure and tighten the screws holding the terminal block to the power supply.
Caution Reinstall the terminal block cover to prevent a short circuit or shock hazard.
Caution In a system with dual power supplies, connect each power supply to a separate source. In case of a line failure, the second source will most likely still be available.
Step 9 Remove the tape from the circuit breaker switch handle and provide power by moving the handle to the on () position.Turning the power switch on also locks the power supply in the chassis.
Step 10 Verify power supply operation by checking that the power supply LEDs are in the following states:
•INPUT OK LED is green.
•FAN OK LED is green.
•Output fail LED is off.
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