About Apple Service Diagnostic v2.6.3 Dual Bootable CD:
Apple Service Diagnostic CD is designed to run both Open Firmware and Mac OS X tests from a single CD. Apple Service Diagnostic (OF) performs low-level tests of hardware directly and does not require an operating system to run. Apple Service Diagnostic (OS) uses the Mac operating system to perform tests.
Apple Service Diagnostic is distributed for use with iBook G4 (12-inch Mid 2005), iBook G4 (14-inch Mid 2005), Mac mini (late 2005), iMac G5 (17-inch iSight), iMac G5 (20-inch iSight), PowerBook G4 (15-inch Double-layer SD), PowerBook G4 (17-inch Double-layer SD), and PowerMac G5 (Late 2005). * See pdf on disc for OS testing on PowerMac G5 (Late 2005).
To ensure proper fan and temperature control in the Power Mac G5, you must run Apple Service Diagnostic whenever you replace a processor or logic board with a new processor or logic board. You must also run the diagnostic if you re-install the same processor but in a different connector from the one in which it was originally installed. Apple Service Diagnostic for Power Mac G5 is available as a download from the Disc Images section of the Apple Service Source website.
Note: The calibration process of Apple Service Diagnostic requires a controlled environment to ensure accurate ambient temperature readings. Computers under test must have the transparent air deflector installed and the door sensor switch must be operable. Units under test should also be located away from heating and air conditioning ventilation systems and the fan exhaust of other machines. Ambient temperature should not go above 77 degrees Fahrenheit or 25 degrees Centigrade."