3Com 8800 Installation Manual

Also see for 8800 SERIES: Installation guide Datasheet Product guide Configuration guide

Contents

3Com 8800 Installation Manual Manual pdf 21 page image

5 ENGINEERING, MAINTENANCE ANDTROUBLESHOOTINGMaintenance andTroubleshootingThis section provides field maintenance information and troubleshooting proceduresfor the PoE Power Rack and power supply modules. Review the safety information insection 3 of this manual before performing maintenance proceduresAll procedures described in this section must be performed by qualified maintenancepersonnel only.The power supply modules are not field serviceable and must be replaced in the eventof a failure.LED Indication Use Table 6 to determine if there is a fault with PoE Power Rack.When visual indicators do not identify a defective part, notify your authorized servicerepresentative.Table 6 Troubleshooting GuideController alarmstatusPower supplymoduledisplay Possible problems Possible solutionRUNALM NONE ■ The AC power inputcircuit breakers hasopened.■ AC input voltage is toolow or power is lost1 Verify that ACpower inputcircuit breaker isclosed; closecircuit breaker ifit is open.2 Verify the ACpower is presentand in normalrange.RUNALM AC OKFAULT ■ Power supply modulefailure■ Output beyond normalrangeReplace the powersupply moduleRUNALM AC OKDCOKFAULTCommunication errorbetween the power supplymodule and the controllerReplace the powersupply moduleRUNALM AC OK ■ Power supply module hasno output and it is instandby mode■ Over load■ Ambient temperature istoo high■ Power supply modulefailure;1 Initialize thepower supplymodule or resetthe controller.2 Check if the loadis over therating.3 Check theambienttemperature.4 Replace thepower supplymodule

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