Repair manual

Troubleshooting Symptom/Cure Tables: System Problems After Startup - 59
Modem Performance Issues
System Freeze Occurs When Sleeping iMac Connected to Internet
This table should help you troubleshoot issues with the speed or response time of the
modem. The table is divided into different sections, each with its own symptom and
cure(s). Find your symptom and then follow the instructions under the “Possible Fix”
column to resolve the problem.
Possible Cause Possible Fix
Slow Response: If the user has connected to the online service and is experiencing
very slow response to their actions or when accessing sites, refer to this section of the
table.
Too many people are using
the ISP's Internet
services.
When using an ISP, users need to remember that the ISP
only has a limited amount of bandwidth to the Internet. If
a large amount of people are dialing in, individual's
speeds will be affected.
The quality of the phone
line is limiting modem
performance.
Refer to “Modem Performance Issues” in the Basics
chapter for an overview of factors that can affect modem
performance.
System freeze occurs when a slot-load iMac (running Mac OS 8.6 or Mac OS 9) sleeps
with an active modem connection (PPP) to the Internet.
Possible Cause Possible Fix
Software conflict affecting
slot-load iMacs running
Mac OS 8.6 or Mac OS 9.0.
Download and install Apple Audio Update 1.3 from http://
asu.info.apple.com/swupdates. System software versions
later than Mac OS 9.0 do not have this conflict.