Chapter 4 Operating the Passport 8000 Series switch 91Installing and Maintaining the Passport 8000 Series ChassisApparent module failureIf a module failure occurs, check for possible backplane connection problems.Make sure that the module is correctly seated in the backplane connector and thatthe retaining screws are securely tightened.If a module fails during module initialization and the replacement module is thesame module type, in rare cases the new module may not initialize.To work around this issue, follow the steps in either work around 1 or 2.Module failure work around 11 Remove the faulty module.2 Insert a module type that is different from the module type removed inStep 1and wait for this replacement module to initialize.The Master LED on amodule in slot 1 or slot 2 isamber.The module has detected asystem clock generationfailure on its own circuitry.Replace the module; make sure that it is in thecorrect slot.Note: This LED has significance only for themodule in slot 1 or slot 2 that provides theclock function for the switch.The Fault LED is blinkingamber.A chassis failure has beendetected.From the console management station, usethe show log command to check the systemlog for information about hardware failures.Check the fan tray in the Passport 8000Series chassis to make sure both fans arerunning.Check the switch power supplies; one mayhave stopped functioning.The module may have failed to read the MACaddress from the chassis backplane. If this isthe case, arrange to replace the chassis.The Fault LED is steadyamber.The module failed itspower-on self-test. Adiagnostic or hardware failurehas been detected.Replace the module.No LEDs are lit. A hardware failure has beendetected.Turn the switch power off and then turn it onagain.Table 14 LED problem indicators (continued)Symptom Probable cause Corrective action
