3Com 3500 appendix Diagnostics

14Quick Installation Guide

Table 8 Troubleshooting Abnormal Activity on the Module Status LEDs

Module LED Status	Possible Sources of Problem and Steps to Take
PWR LED lights yellow.	Possible source of problem:
	■	Module is not fully inserted.
	■	Module has failed.
	Recommended actions:
	■	Verify that the module is fully inserted.
	■	Replace the module with a new one.
INS LED lights yellow.	Possible source of problem:
	■	Module is partially inserted.
	Recommended action:
	■	Remove the module and reinsert it.
ERR LED lights yellow.	Possible source of problem:
	■	Module did not successfully complete the
		power-up diagnostics.
	Recommended actions:
	■	Reboot the system.
	■	If the ERR LED remains yellow, contact your
		network supplier or 3Com Technical Support.
E LED (Error - Port Status)	Possible source of problem:
lights yellow.	■	Module did not successfully complete power-up
		diagnostics.
	■	An error condition has occurred with the
		associated port, or the port has been disabled
		through the Administration Console or
		WebConsole.
	Recommended actions:
	1	Verify that all cables are firmly inserted into the
		system’s affected port and the attached device.
	2	Check the L LED (Link - Port Status).
	3	Test for faulty cables.
	4	If the E LED (Error - Port Status) remains yellow,
		contact your network supplier or 3Com Technical
		Support.