Chapter 5 Maintaining the Router
Removing and Replacing AC and DC Power Subsystem Components
Troubleshooting a 2800 W DC PEM Installation
Use the following procedure to troubleshoot the DC PEM if it is not operating properly after installation.
Step 1 Make sure the PEM is seated properly:
•Eject and reseat the PEM. Make sure:
–The captive screw on the ejector lever is tightened securely.
–The power switch is set to the on (1) position.
Step 2 Make sure the router is powered on and that all power cords are connected properly.
Step 3 Check the PEM status indicators:
•F1LO (Feeder 1 Low) (flashing
–Power cords are securely attached to their PDU terminal studs.
–Power cords are securely attached at the DC source end.
–The source DC circuit breaker is switched on.
If the indicator is still flashing after you perform the above checks, replace the power supply.
During normal operation, this indicator remains off.
•F2LO (Feeder2 Low) (flashing
–Power cords are securely attached to their PDU terminal studs.
–Power cords are securely attached at the DC source end.
–The source DC circuit breaker is switched on.
If the indicator is still flashing after you perform the above checks, replace the power supply.
During normal operation, this indicator remains off.
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