User Guide

Power Mac G4 Cube Troubleshooting - 15
Symptom Charts
Modem is slow responding
1. Too many people are using the Internet service provider's (ISP) Internet services.
When using an ISP, users need to remember that the ISP only has a limited amount of
access to the Internet. If a large number of people are dialing in, individual's speeds
will be affected.
2. Check with the ISP, they might have a reduced capacity due to repair, for example.
3. Check the phone line. The quality of the phone line can limit modem performance.
Computer does not respond when modem dials
1. Extensions can be in conflict or the Mac OS can be damaged. Restart with only Mac
OS All and any modem drivers needed. If the issue is solved, troubleshoot extensions.
2. If the problem persists, perform a clean installation of Mac OS 9.
3. Check phone cable and reseat modem board.
4. Replace the modem board.
5. Open the Modem Country Selector utility and make sure modem is set to the correct
country.
Modem is not recognized or does not respond
1. Make sure the correct CCL and extension files are installed and the correct CCL is
selected. Delete the modem preference and reinstall the CCL and modem extension.
2. Check the modem with Apple Hardware Test.
3. Reseat the modem board and modem cable.
4. Reset parameter RAM by holding down Command-Option-P-R when the computer is
turned on.
5. Disconnect all third-party equipment and use the Extensions Manager control panel to
start up the computer with the Mac OS All 9.x extensions set. If OK, troubleshoot
extensions and check for hardware compatibility.
6. If the symptom persists, perform a clean installation of the Mac OS and try again.
7. Test the modem board in a known-good computer.
8. Replace the modem board.