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Troubleshooting your connection, Cable modem, dsl, and lan internet connections – Apple iMac G5 (iSight) User Manual

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Appendix C

Connecting to the Internet

81

 If you chose Manually, type the other information into the corresponding fields.
 If you chose Using DHCP, you don’t need to enter any further information unless your

system administrator has instructed you to do so.

8

Click AirPort and select options for joining an AirPort Extreme network after restarting
or when your computer wakes from sleep.

9

Click Apply Now.

Once you configure your AirPort settings, you are ready to connect.

To test your AirPort connection:

m

Click the AirPort status icon in the menu bar and choose Turn AirPort On.

Any AirPort Extreme network in range should appear in the menu.

Troubleshooting Your Connection

Cable Modem, DSL, and LAN Internet Connections

If you can’t connect to the Internet using your AirPort, built-in Ethernet, or external
modem, you can use Network Diagnostics to help you resolve connection problems.
Click “Assist me” in the Network pane of System Preferences, then click Diagnostics to
open Network Diagnostics and follow the onscreen instructions.

If Network Diagnostics can’t resolve the problem, there may be a problem with the
Internet service provider (ISP) you are trying to connect to, with an external device you
are using to connect to your ISP, or with the server you are trying to access. You can
also try the following steps

Check the cables and power supplies
Make sure all modem cables are firmly plugged in, including the modem power cord,
the cable from the modem to the computer, and the cable from the modem to the wall
jack. Check the cables and power supplies to Ethernet hubs and routers.

Turn the modem on and off and reset the modem hardware
Turn off your DSL or cable modem for a few minutes, then turn it back on. Some ISPs
recommend that you unplug the modem’s power cord. If your modem has a reset
button, you can press it either before or after you turn the power off and on.