3Com 3CSOHO100- User Manual

Contents

36 C HAPTER 4: T ROUBLESHOOTING I NSTALLATION P ROBLEMSInterpreting the LEDsThe OfficeConnect NIC has three light-emitting diodes(LEDs) that can help indicate when there are problemswith your network connection.See Figure 2 in Chapter 1 for a picture of the LEDs.Table 4 explains the LED states.If the LNK (10 LNK or 100 LNK) LED is off and the PC ispowered on and the network cable is connected, checkthe following:1 Ensure that the network hub or device to which theNIC is connected and the cable connecting to yourNIC comply with the 10BASE-T or 100BASE-TXspecifications.2 Ensure that the network hub or device to which theNIC is connected is powered on.Table 4 LED DescriptionsLED State Meaning10 LNK(link)On If the network driver is installed, as described in Chapter 3,the connection to the 10BASE-T Ethernet network is active.If the driver is not installed, the NIC is receiving power.Off Something is preventing the connection between the NICand the network. See the troubleshooting steps followingthis table.Blinking The cable polarity is reversed. Try a differentnetwork cable.100 LNK(link)On If the network driver is installed, as described in Chapter 3,the connection to the 100BASE-TX Fast Ethernet networkis active.If the driver is not installed, the NIC is receiving power.Off Something is preventing the connection between the NICand the network. See the troubleshooting steps followingthis table.ACT(activity)Flashing Network traffic is present.Steady Heavy network traffic is present.Off No network traffic is present.