Apple powermac 8500 series Servicehandbuch
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Troubleshooting
Symptom Charts/System
(Continued)
- 9
System
(Continued)
System
intermittently
crashes or hangs
1 Verify system software is version 7.5.2 or later (PM8500/
120) or 7.5.3 or later (PM 8500/132, PM 8500/150,
and WS 8550).
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 8500 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.