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Фрагмент инструкции
If you plan to have the cable line connected to a television as well as to the cable modem, you will need a cable line splitter (not included). ¦ Plug the cable modem’s power adapter into a wall outlet or surge protector and into the cable modem’s power jack. ¦ Plug one end of the RJ-45 network cable into the cable modem’s Ethernet port and the other end into the existing NIC. 3 Verify that the cable modem starts up and initializes properly. When the cable modem is operating properly, the cable modem Link Status and Power LEDs are lighted a solid green. 31 If you are powering up the cable modem for the first time, allow 15 minutes for this process to complete. See “Cable CHAPTER 3: ETHERNET INSTALLATION Modem Operation” for a more in-depth description of the front panel LED indicators. 4 Power on the computer. When installation is complete, your setup should resemble the diagram on page 35. Using the Cable Connections CD You do not need to install the included Cable Connections CD to use the Ethernet port on the cable modem. You will, however, want to discover the valuable free software products included on the CD. To install the Cable Connections CD, follow the instructions on the CD. Troubleshooting the Ethernet Installation I cannot access my e-mail or Internet service. ¦ Check all connections. Make sure the cable line is securely connected to the cable jack on the back of the modem. Verify that the RJ-45 cable is securely plugged into both the modem and the network interface card. Make sure the power adapter is properly plugged into the modem and into a wall outlet or surge protector. If the cable modem is properly connected, the Cable Modem Power, Cable Modem Status, and Link Status indicator lights on the front of the modem should all be a solid color. ¦ Power cycle the cable modem by unplugging the power jack from its electrical outlet and then plugging it back into the outlet. Then try reconnecting to your cable service provider. ¦ Call your cable service provider to verify that their service is two-way. This modem is designed for use with two-way cable plants. ¦ The network interface card or USB network interface may be malfunctioning. Refer to its documentation for troubleshooting information. ¦ If you are using a cable line splitter so that you can connect the cable modem and a television at the same time, try removing the splitter and reconnecting the Troubleshooting the Ethernet Installation cables so that the cable modem is connected directly to the cable wall jack. Then try reconnecting to your cable service provider. ¦ Check for a resource conflict. To do this, right-click the My Computer icon on the Windows desktop. Then click Properties. Click the Device Manager tab and look for a yellow exclamation point or red X over the NIC in the Network adapters field. If you see either, you have an IRQ conflict. Refer to the manufacturer’s documentation that came with your network interface card. ¦ Make sure that TCP/IP is the default protocol in use by your computer. ¦ Release and renew the computer’s IP address. To release and renew the IP address for the Windows 95/98 operating system: a Click Windows Start and click Run. b Type winipcfg in the Open field and click OK. The IP Configuration screen appears. 33 c In the Ethernet Adapter Information group area, click the drop down arrow and select the Ethernet adapter. d Click Release. The IP address changes to 0.0.0.0. 34 34 CHAPTER 3: ETHERNET INSTALLATION e Click Renew to refresh the IP address. The refreshed address may or may not be the same as the original IP address. To release and renew the IP address for the Windows 2000 operating system: a Click Windows Start and select Programs, then Accessories. b Click Command Prompt. c At the command prompt (C:\), type ipconfig /release and press the Enter key (notice that there is a space between ipconfig and /release). d After the system releases the IP address, at the command prompt type ipconfig /renew and press the Enter key (notice that there is a space between ipconfig and /renew). 3535 Troubleshooting the Ethernet Installation e Exit the Command Prompt screen to return to the Windows desktop. The Cable Status LED never stops blinking. The signal from your cable service provider’s equipment may be too weak or the cable line may not be properly attached to the modem. If the cable line is properly connected to the modem, call your cable service provider to verify whether or not a weak signal is the problem. All four of the LEDs on the front of my cable modem are lighted and blinking. Call your cable service provider or 3Com’s technical support for assistance. All of the LEDs on the front of my modem look right, but I still cannot access the Internet. ¦ If the Power, Link Status LEDs, and Data Rate LEDs are lighted, the cable modem is operating properly. Try shutting down the computer and then turning it back on. This causes the computer to re-establish communications with your cable service provider...