Running the NIC Diagnostics Tests 57If a LNK LED indicates a problem, check the following:1 Ensure that your network hub or switch and the cableconnecting to your NIC comply with the specificationsappropriate for your network connection.2 Ensure that the hub or switch is powered on.Running the NIC Diagnostics TestsThe 3Com NIC Diagnostics program for Windows containstests that can check the status of the following items:n Networkn NICn Remote Wake-UpTo run NIC diagnostic tests on a PC running DOS,Windows NT 3.51, Windows 3.x, or Windows forWorkgroups, use the 3Com Configuration andDiagnostics program for DOS. See the DOSDIAG.TXTfile located in the HELP directory on EtherDisk diskette 3for instructions.To run the NIC Test, Network Test, or Remote Wake-Up Teston a Windows 95/98 or Windows NT 4.0 PC:1 Make sure that the NIC is installed and is connectedto the network and that the driver is installed.2 Start the 3Com NIC Diagnostics program.a Open the Windows Start menu.b Select Programs, and then 3Com NIC Utilities.c Click 3Com NIC Doctor.The 3Com NIC Diagnostics General screen appears.Click Help to obtain general information about the functionof a screen. To obtain specific information about any topicon a screen, click the question mark (?) in the upper rightcorner of the screen, move it over a topic, and click once.3 Click the Diagnostics tab.The Diagnostics screen (Figure 11) appears.
