Apple 9500/180MP Personal Computer User Manual


 
Troubleshooting Symptom Charts/System - 9
System
intermittently
crashes or hangs
1 Verify system software is version 7.5.2 or later (Power
Macintosh 9500/120 and 9500/132) or 7.5.3 or later
(Power Macintosh 9500/150).
2 Verify DIMMs are noncomposite.
3 Verify software is known-good. Do a clean install of the
system software.
4 Verify software is Power Macintosh 9500 compatible
(contact developer). Also, try booting with extensions off to
determine if there are system init problems.
5 Clear parameter RAM. Hold down <Command> <Option> <P>
<R> during startup but before "Welcome to Macintosh"
appears.
6 Remove all DRAM DIMMs and try replacing them one at a
time to test. Replace any bad DIMMs.
7 Replace processor card.
8 Replace logic board. Retain DIMMs. Note: When you replace
the logic board, be sure the LED cable is not interfering with
the power actuator.