Chapter 5 System Troubleshooting - Cisco 124792 User Manual

Cisco ac/dc power system user guide
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System Troubleshooting
This chapter contains information about troubleshooting and should be consulted in the event of a system
malfunction.
The following is a list of potential problems and resolutions. If the first recommendation does not solve
the problem, continue on to the next. If further assistance is needed, see the
Assistance" section on page
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Most alarms will clear automatically when the cause has been cleared. Some alarms can be cancelled via
Note
the front panel push-buttons. In this case it will be indicated in the trouble shooting instructions.
Error Message Low System Voltage (Red light on controller, Relay #1)
Explanation
1.
2.
3.
Recommended Action
1.
2.
Error Message Mains Error (Yellow light on controller, Relay #2)
Explanation
Recommended Action
1.
2.
May 2006
xiv.
Rectifier failure
Loss of AC power on some or all rectifiers
Load exceeds rectifier capacity
Replace faulty rectifier
Add one or more rectifiers to the system
AC supply off on two or more rectifiers
Verify that the AC supply is available at the correct voltage
Verify that the AC input breaker is in the ON position
C H A P T E R
"Obtaining Technical
Cisco AC/DC Power System User Guide, R1.0
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