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Solving Hardware Problems 634 Power cycle the unit. If a further thermal shutdown occurs, and allenvironmental conditions are satisfactory, return the unit to 3Com.Error message indicating that the GBIC transceiver is invalidThe Switch has identified that the GBIC does not meet the minimumrequirements for the Switch and has disabled the port. To correct thisproblem, completely remove the GBIC and replace it with a 3Comapproved GBIC. See “Approved GBIC Transceivers”on page 31.Error message indicating that the GBIC transceiver is faultyTo correct this problem, completely remove the GBIC and then reinsert it.Alternatively, insert another identical GBIC. If the problem persists,contact 3Com Technical Support.Error message indicating that the SFP transceiver is invalidThe Switch has identified that the SFP does not meet the minimumrequirements for the Switch and has disabled the port. To correct thisproblem, completely remove the SFP and replace it with a 3Comapproved SFP. See ““Approved SFP Transceivers” on page 33.Error message indicating that the SFP transceiver is faultyTo correct this problem, completely remove the SFP and then reinsert it.Alternatively, insert another identical SFP. If the problem persists, contact3Com Technical Support.DUA1770-9AAA05.book Page 63 Tuesday, September 9, 2003 2:01 PM