3Com SuperStack II Switch 9300 Getting Started Manual page 40

40 C 6: T
HAPTER ROUBLESHOOTING THE
Table 7 Troubleshooting Power Failures
Symptom Possible Sources of the Problem
System does not power up.
Table 8 Troubleshooting Abnormal System LED Activity
LED Status Possible Sources of the Problem
Fault LED blinks yellow. Diagnostic software is not running.
Power LED does not light. System has failed.
S
YSTEM
System is not receiving power.
Power supply malfunctioned.
Steps to Take
1 Verify that the building's power outlet has power.
2 Check that the power cord is firmly inserted into the system and either the
building's power outlet, the redundant power system, or the
uninterruptible power system.
3 If you are using an RPS or a UPS, check that it is firmly inserted into the
building's power outlet.
4 Try another power cable.
5 If the system still does not operate, contact your network supplier or 3Com
Technical Support.
Steps to Take
1 Check the Administration Console display.
2 Contact your network supplier or 3Com Technical Support.
1 Shut down the system by removing the power plug.
2 Contact your network supplier or 3Com Technical Support.