Chapter 5 Maintaining the Router
Removing and Replacing a DC PEM
Step 5 Power on the circuit breaker.
Step 6 Power on the PEM.
The AC Input and DC Output power indicators on the front of the power supply should be on. If the indicators do are not on, or the Miswire indicator is on, see the “Troubleshooting the DC Power Supply Installation” section on page
Troubleshooting the DC Power Supply Installation
Use the following procedure to troubleshoot the DC power supply if it is not operating properly after installation.
Step 1 Make sure the power supply is seated properly:
•Eject and reseat the power supply. Make sure that the:
–Captive screw on the ejector lever are tightened securely.
–Power switch is set to the on (1) position.
Step 2 If the Input OK and Output OK LEDs are off, or if the Output Fail LED is on, make sure that the:
•Power switch is set to the on (1) position.
•Power leads are securely connected to the power connector block on the PDU.
•Power cables are securely connected at the DC source connection.
•The source DC circuit breaker is turned on.
Step 3 Check the power supply status indicators:
•Output OK
(1) position.
If the indicator is off, toggle the power switch off and then on. If the indicator remains off after several attempts to power it on, replace the power supply with a spare.
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