Accton Technology VM2524 Installation Manual

Contents

Accton Technology VM2524 Installation Manual Manual pdf 43 page image

A-1Appendix A: TroubleshootingDiagnosing Switch IndicatorsThe VDSL Switch-VS2512A can be easily monitored through panel indicators toidentify problems.The table below describes common problems you may encounterand possible solutions. If the solutions in the table fail to resolve the problem contactAccton Technical Support for advice.Power and Cooling ProblemsIf the power indicator does not turn on when the power cord is plugged in, you mayhave a problem with the power outlet, power cord, or internal power supply.However, if the unit powers off after running for a while, check for loose powerconnections, power losses or surges at the power outlet, and verify that the fans onthe unit are unobstructed and running prior to shutdown. If you still cannot isolate theproblem, then the internal power supply may be defective. In this case, contactAccton Technical Support for assistance.Symptom Cause SolutionPOWER indicatordoes not light upafter power on.Power outlet, powercord, or internal powersupply may bedefective.• Check the power outlet by plugging in anotherdevice that is functioning properly.• Check the power cord with another device.If these measures fail to resolve the problem, havethe unit’s power supply replaced by a qualifiedAccton distributor.ETHERNET LINKindicator does notlight up after makinga connection.Network cable orEthernet deviceattached to this portmay be defective.• Verify that the switch and attached device arepowered on.• Be sure an Ethernet cable is plugged into both theswitch and attached device.• Verify that the proper cable type is used and itslength does not exceed specified limits.• Check the network cable connections for possibledefects. Replace the defective cable if necessary.VDSL LINKindicator does notlight up after makinga connection.VDSL switch, cabling,VDSL, VDSL LINE, orVDSL Switch ports maybe defective.• Verify that the VDSL switch and attached CPE arepowered on.• Be sure the RJ-21 cables are plugged into theVDSL switch, splitter, and the VDSL punch-downblock/patch panel.• Verify that the cable length does not exceedspecified limits.• Check the cable connections on the VDSL switch,splitter, punch-down block/patch panel, and theVDSL CPE for possible defects. Replace thedefective cable if necessary.