Apple iMac G5 Troubleshooting Your Connection, Cable Modem, DSL, and LAN Internet Connections

Page 85

Troubleshooting Your Connection

Cable Modem, DSL, and LAN Internet Connections

If you can’t connect to the Internet using your cable modem, DSL, or local area network (LAN), see the following steps.

Important: Instructions that refer to modems do not apply to LAN users. LAN users may have hubs, switches, routers, or connection pods that cable and DSL modem users do not. LAN users should contact their network administrator rather than an ISP.

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.

PPPoE Connections

If you are unable to connect to your Internet service provider using PPPoE, first check the cables and power supplies, then turn the power off and on and reset the modem hardware.

Check System Preferences settings:

1Choose Apple (K) > System Preferences.

2Click Network.

3Choose Network Port Configurations from the Show pop-up menu.

4Drag Built-in Ethernet to the top of the Port Configurations list.

5Choose Built-in Ethernet from the Show pop-up menu.

6Click PPPoE.

7Select “Connect using PPPoE.”

8Check the Account Name field to be sure you have entered the correct information from your ISP.

9Retype your password if you chose to save your password, to be sure it is correct.

10Click TCP/IP. Make sure you’ve entered the correct information from your ISP in this pane.

11Click Apply Now.

Appendix C Connecting to the Internet

85

Image 85

Contents User’s Guide Apple Infinite Loop Contents Problems That Prevent You From Using Your Computer TroubleshootingOther Problems Using Apple Hardware Test1Getting Started Getting Started Getting Started Setting Up Your iMac G5 for the Internet Using a Wireless Keyboard and MouseWhat’s Next? Transferring Information to Your iMac G5Additional Information What to Do When You Have Finished Using Your iMac G5Put Your iMac G5 to Sleep to Save Energy Shut Down Your iMac G5Page For the Latest Information 2Getting to Know Your iMac G5Getting to Know Your iMac G5 IMac G5 Front ViewBuilt-in speakers IMac G5 Back View Audio line in port Learning About Mac OS Customizing Your Desktop and Setting Your Preferences To set up a printer Connecting to a PrinterKeeping Your Software Up to Date Playing a CD and Connecting HeadphonesMonitoring Printing Connecting to a Network Connecting a Camera or Other FireWire DeviceUsing the Internet Transferring Files to Another ComputerTo force an application to quit When an Application FreezesUsing Applications Getting Answers to Your Questions Using Mac OS HelpTo use Mac OS Help 3Using Your Computer Universal Serial Bus USB Using USB DevicesFor More Information on USB Using Multiple USB Devices at the Same TimeThese are some of the things you can do with FireWire FireWireFireWire Target Disk Mode Using FireWire DevicesFor More Information on FireWire How AirPort Provides Wireless Internet Access AirPort Extreme Wireless Internet and NetworkingSetting Up Bluetooth File Exchange Bluetooth Wireless TechnologyTo set up a Bluetooth device To set up a Bluetooth file exchangeSending a File to a Bluetooth Enabled Device Setting Up Bluetooth ConnectionsFor More Information on Bluetooth Wireless Technology To set up a Bluetooth device to work with your computerEthernet 10/100Base-T For More Information on Using EthernetHeadphone Out/Optical Audio Out Port Audio SupportAudio Line In Port For More Information on Using Audio External Video Support VGA, Composite, and S-Video Connecting a Television, VCR, or Other Video Device Connecting an External Display or ProjectorFor More Information on Using an External Display or TV To connect a TV, VCR, or other video device to the iMac G5Inserting a CD or DVD Disc Using Your Optical DrivePlaying DVD Discs Ejecting a DiscRecording CD-R and CD-RW Discs For More InformationKeyboard Controls To record data to a DVD-R disc using the FinderRecording Information on a DVD To burn an iDVD project to a blank DVDSecuring Your Computer Page 4Enhancing Your Computer Installing Additional MemoryTo install a memory module Enhancing Your Computer Inch iMac Screwdriver Tighten 3 screws Making Sure Your Computer Recognizes the New Memory To install an AirPort Extreme Card in your iMac G5 Installing an AirPort Extreme CardEnhancing Your Computer Connect the antenna to the AirPort Extreme Card Phillips To replace an internal backup battery in your iMac G5 Replacing the Internal Backup BatteryEnhancing Your Computer Remove old battery Cut-out Metal clip Insert new battery Phillips Enhancing Your Computer Page If the computer won’t respond or the pointer won’t move Problems That Prevent You From Using Your ComputerIf the computer won’t turn on or start up Installing Mac OS X and Applications Reinstalling the Software That Came With Your ComputerInstalling Applications Installing Mac OS Other ProblemsIf you have a problem with an application If you have trouble using AirPort wireless communicationIf your date and time settings get lost repeatedly If you have problems with your Internet connectionLocating Your Product Serial Number If you have trouble ejecting a discTo use Apple Hardware Test Using Apple Hardware TestSpecifications Page To clean your iMac G5 screen, do the following Cleaning Your iMac G5 DisplayCarrying Your iMac G5 Appendix B Care, Use, and Safety Information Safety Instructions for Setting Up Using Your ComputerAvoid Hearing Damage Ergonomics Connectors and PortsDisplay Apple and the EnvironmentBefore you connect to the Internet There are four kinds of Internet connectionsTo find the settings on a Mac OS 9 computer To find the settings on a Mac OS X computerTo find the settings on a Windows PC To set up a DSL or cable modem or a LAN connection Setup Assistant WorksheetSelect how your computer connects to the Internet IP Address Subnet Mask Router Address If you selected Using DHCP, enter the followingSetting Up Your Internet Connection Manually Dial-Up Connection To set up Network preferences for the internal modem portTo test your Internet configuration DSL, Cable Modem, or LAN Internet Connections To set up Network preferences for the built-in Ethernet port To set up a manual configuration Manual ConfigurationTo set up a Dhcp configuration Dhcp ConfigurationTo set up a PPPoE connection PPPoE ConfigurationAppendix C Connecting to the Internet Setting Up an AirPort Extreme Connection Manually AirPort Extreme Wireless ConnectionTo check if you have access to an AirPort Extreme network Appendix C Connecting to the Internet To test your AirPort Extreme connection Cable Modem, DSL, and LAN Internet Connections Troubleshooting Your ConnectionPPPoE Connections Network Connections FCC Compliance Statement Bluetooth InformationIndustry Canada Statement Laser Information Vcci Class B Statement European CommunityExposure to Radio Frequency Energy Mouse Class 1 LED InformationTelephone and Apple 56K Modem Information Disposal and Recycling InformationInformation You Need in Canada Information You Need in the United Kingdom Page Index Index Using multiple devices at once