Download Macintosh Performa 600 series Specifications

REA Procedures
System Tester - 6
System Tester
The diagnostic application 5XXX/6XXX Tester, which is
included in the Utilities folder on the Macintosh 5xxx, 6xxx
System 7.5 v 2.0 Update Service CD, tests for known
component issues causing system freezes in Power
Macintosh/Performa 5xxx/6xxx computers. The
application does not test for video color hue issues.
When the application finds a problem with a unit, it displays
one of the following two messages:
The logic board has been checked and a potential issue
has been found. Please contact Apple Customer Support
or an Apple Authorized Service Provider to have the
logic board replaced as part of the repair extension
program.