Macintosh IIcx: Troubleshooting Startup Freezes (4/94)

I have an intermittent problem with my Macintosh IIcx. It freezes when I
start it up.

The system does not have any INITs in the System Folder. I re-installed
System software 6.0.5 using the Installer. The system has a Mac286 card
and an Irma Link card in it with 5MB of memory. The system board, memory,
and power supply have been replaced.

To troubleshoot this problem follow these steps:

1) Remove the Mac286 and the Irma Link cards to isolate the problem to
either the cards or the CPU.

2) Completely throw away the System Folder.

3) Re-install the System Folder from known-good, locked System diskettes.

4) If the problem persists, try swapping the keyboard, cable, and mouse.

5) Have a service provider run diagnostics to determine if there is a hardware
problem.

Article Change History:
5 April 1994 - Added additional troubleshooting step, Reviewed for technical
accuracy.

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Published Date: Feb 18, 2012