3Com 3CNJ95 manual Appendix G Troubleshooting the NJ95

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Appendix G: Troubleshooting the NJ95

Appendix G: Troubleshooting the NJ95

If you encounter problems with the NJ95:

■Verify the NJ95 is receiving power by viewing the Power LED (it should be lit). If the Power LED is not lit, make sure:

■The other end of the network cable is plugged into a system that provides Power over Ethernet according to IEEE 802.3af, if using Power over Ethernet.

■The Local Power Supply is plugged into the NJ95 and into a working electrical outlet, if using Local power supply.

■Verify the NJ95 is connected to the network properly by viewing the Link LED (it should be lit). If the Link LED is not lit, make sure the network cable:

■Is terminated properly. Refer to the connector manufacturer’s instructions for terminating the cable. Be sure to test the connector and verify it is working.

■Has a valid connection to the network.

■Adheres to proper length and cabling specifications for your network.

■Make sure the port on the switch to which the NJ95 is connected is configured as a standard MDI-X port. Make sure all cables connecting the NJ95 to the patch panel are straight-through cables (not crossover cables).

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Contents NJ95 Page User Guide United States Government Legend Contents Page User Guide Package Contents NJ95 Description NJ95 Feature DescriptionNJ95 Main Unit NJ95 Network Jack Main Unit Installing the NJ95 Network JackInstalling the Universal Wall Plate 1a. Installing the Universal wall plateInstalling the Universal Wall Plate with Coupler Cable Installing the Manufacturer-specific Wall Plate 1b. Installing the Manufacturer-specific wall plateConnects the NJ95 to the network Mounting the NJ95 Main unit to the Universal Wall plate 2b. Mounting the NJ95 Main unit to the wall plateGroove for RJ-45 Securing the NJ95 Main unit to the Wall plate 2c. Fastening the NJ95Retaining Screw LED Description Set up the power supplyUnfastening the NJ95 Main unit from the Wall plate Un-Installing the NJ95 Network JackRemoving the NJ95 from the Universal Wall plate Removing the NJ95 from the Manufacturer-specific Wall plate User Guide Appendix a Detail Description of NJ95 Connecting Devices to the NJ95 Wall Plate Dimensions Two hole Appendix B Wall Plate DimensionsWall Plate Dimensions Four hole Appendix C Setting up the Power Supply Using an Integrated Switch with Power over Ethernet Using an Integrated Switch with Power Over EthernetUsing a Multi-port Ethernet Power Supply Using a Multi-port Ethernet Power Supply Using a Single-port Ethernet Power Supply Using a Single-port Ethernet Power SupplyUsing the 3Com Local Power Supply Using the 3Com Local Power SupplyAppendix C Setting up the Power Supply User Guide Network Interface Appendix D SpecificationsPerformance Features User Guide 3CNJPSE Appendix E Obtaining Optional ComponentsUser Guide Appendix F Setting up the Network Cabling at Your Site User Guide Appendix G Troubleshooting the NJ95 Verify that the DIP Switch settings are all set to OFF Day Free Installation Support Online Technical ServicesAppendix H Contacting Technical Support User Guide Support from 3Com Support from Your Network SupplierCountry Telephone # Country Telephone # User Guide 3Com Corporation Limited Warranty Limited Warranty and Regulatory Compliance InformationLimited Warranty and Regulatory Compliance Information Warranties EXCLUSIVE, Warranty Disclaimer Governing LAW FCC Class a Verification Statement FCC ComplianceFCC Declaration of Conformity Industry Canada IC Compliance StatementEuropean Union Declaration of Conformity Page 3Com Corporation