3Com DSA-3CV1001-02 Troubleshooting, Use the front panel LEDs to determine each port’s status

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TROUBLESHOOTING

This appendix explains how to identify and correct problems, and how to perform related diagnostic tasks.

If you have problems that are not addressed in this chapter, contact 3Com Technical Support or your service person. Refer to Appendix F for technical support information.

Power-on Self Test When the VCN Access Point is plugged-in, the VCN AP immediately starts

(POST)the power-on self test (POST) sequence as indicated by the power LED flashing in green. If the VCN AP is not powered, the power LED remains OFF. Check the power connections and the ac/dc adapter.

The power-on self test verifies that every component of the VCN AP is fully functional. The power-on self test lasts for 30 seconds at the most, during which time it is orange. If the power-on self test is successfully completed, the power LED turns green. If the power-on self test detected a VCN AP failure, the power LED remains orange. In this case, contact 3Com technical support; refer to Appendix F, Technical Support.

Use the front panel LEDs to determine each port’s status:

Table 7 Determining VCN AP Status During POST

State	Ethernet	Line	Power	Notes

Off	-	-	Off	VCN AP is not connected to a
				power source or failed.

Power-on	-	-	Orange	Test is in progress

Power-on	-	-	Off	VCN AP failed

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Contents Visitor and Community Network Access Point 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Conventions About this GuideList conventions that are used throughout this guide Icon DescriptionDocumentation RelatedYear ComplianceContents Summary and Structure of the Menus Login Using the Local Management Access3Com FTP Site Online Technical Services World Wide Web SitePage Overview Features BenefitsVisitor CommunityOverview Shows a typical MTU/MDU application Visitor Community Network ApplicationsFeatures PBX VCN AP Software Download Network Configuration Describes the LEDs and connectors on the front panel VCN Access Point LEDs and Connectors Front ViewType State Used to VCN AP Unit LEDs and Connectors Back Panel Describes the connectors on the back panelTo reduce the risk of electrocution and fire Safety InformationSicherheitsvorkeh- rungen für den VCN Access Point Précautions de sécurité concernant le VCN Access PointSicherheitsvorkehrungen für den VCN Access Point Safety Information Unpacking List Installing and Operating VCN Access PointQuantity Supplied by 3ComAccess Point Installing the VCNWall, see Under a table, seeApply the paper template to the wall as shown in Figure Access Point on a WallDrill Holes for Anchors Insert the three anchors. See FigureInserting Anchors Screw Holes in the Top of the VCN AP Drive the last screw into the wall anchor to the full depthVCN AP without Curved Cover Table the lower surface of a table, as in FigureAp er tem pla te Lin e W e r Driving Two Screws into the Table Is aligned with the VCN APs small screw hole. See FigureInserting the VCN AP under the Table Completion of Mounting the VCN AP Under the Table Preparing VCN AP for Table Top Use Troubleshooting, section Power-on Self Test Post VCN AP may be used for the following Operating the VCNMaking a Voice Call Any front panel connectionReceiving Faxes Receiving Data TrafficUsing Using the Local Management AccessManagement TerminalMenus Terminal EmulatorMenus use the management system efficiently Menu Hierarchy Type your Login ID and press Enter Type your password and press EnterNumber Sequence Corresponding to Submenus VCN AP Main Menu Return to Previous Menu OptionVCN AP Management Menu Version ScreenEthernet Traffic Counters Ethernet Traffic Count Screen Ethernet StatusChange Ethernet Work Mode Menu Reset CountersLearning Table If a PC is not connected, the message in appearsSetting Internal Loopback Mode Setting External Loopback Mode When you discard the operation, the message appearsHdlc Traffic Counters Hdlc Menu To view the Hdlc MenuHdlc Status Type y and press Enter to perform the resetHdlc Status Screen Change Hdlc Work ModeNormal mode is lack of loopbacks Operation Mode Selector Menu appears Enter F Reset messagesVdsl QAM Channel Status Report To set the Vlan ID perform the following steps Set Vlan ID for ManagementEnter the desired mode a confirmation message appears Set Ethernet Half/Full Duplex ModeChange Password To change the password, do as followsInterface from the Local Management port Set to Factory DefaultsAccess in this manual ProcedureDownload Downloading Software to the LCs in the VCN AC VCN Service Switch 10 Front PaneSoftware Download Network Configuration Enter the AC Vlan ID and press Enter. The message appears Software Download MenuLC Downloading State Table LC Downloading Results Enter the AP Vlan ID and press Enter. The message appears Downloading Software to VCN APsAP Downloading State Table Check Software Download for the LC Cards Download Failed for One or More Line Cards but not All Download Failed for all LCs and all VCN APsDownload Failed for One or More VCN APs but not All State Ethernet Line Power TroubleshootingUse the front panel LEDs to determine each port’s status Determining VCN AP Status During PostDescribes the LEDs ProblemsVCN AP LEDs State IndicatesVCN AP is not VCN AP VCN AC Summary of VCN AP LED Indications after Post Problem SolutionNIC Summary of Problems Indicated by Counts of Errored Frames Hdlc Traffic Count IndicatorsSummary Abnormal Indications From Traffic Counts Counter Counts the Frames Normal Count IndicatesError message Significance User Action Fatal Error MessagesAppendix a Troubleshooting EMC Product SpecificationAppendix B Product Specification Local Access Management Menu appears Confirm Reset BoardType S the downloading message appears Figure Type Y to reset. The screen in appearsProcomm Plus Terminal Screen Procomm window , select Data Send File FigureSelect the correct file and click Open Screen in appearsSend File Status Window While the file is downloading, the status window in appearsFlash VCN AP LM Terminal Connector Pin Assignment PIN Assignments for LMA D CablePin No. Assignment VCN AP describes the pin assignments MiniDIN DB-9 Pin No Pin No. Assignment LM Cable Wiring LM Cable ConnectionsAppendix D PIN Assignments for LMA Cable Terminal Emulation Settings Terminal Emulation SettingsTo define the terminal emulation settings DefiningConfiguration Bar Terminal SettingsTerminal settings can be established in one of two ways Procomm Plus SettingsNo From Left Function Settings Procomm Setup WindowConnection Properties Window Flow controlServices ServicesTechnical Support Online TechnicalUsername anonymous Access by Analog ModemHours a day, 7 days a week Country Data Rate Telephone NumberAccess by Digital Modem 847 262408 727 Country Telephone Number Asia, Pacific Rim Europe, South Africa, and Middle EastCountry Telephone Number Fax Number Page Numbers IndexRemote software download Requirements 3Com Corporation Limited Warranty Obtaining Warranty Service Governing LAW Ninety 90 daysEMC Statements