Apple Mac 8600 User Manual
Page 70
Troubleshooting
Symptom Charts/System - 7
Clicking, chirping,
thumping, or rubbing
1 WS 9650 Only: Verify Ultra Wide SCSI cable is not damaged
and that Velcro straps are secure and holding cable away
from fan on side access panel. If necessary, replace Velcro
straps and/or Ultra Wide SCSI cable if damage is visible.
2 Remove all PCI cards and test the unit. If problem does not
occur with cards removed, begin replacing cards one at a
time to determine which card is causing the problem.
Replace problem card with known-good card.
3 Remove hard drive. If problem no longer occurs, replace
hard drive with a known-good drive.
4 Replace power supply.
5 Replace processor card.
6 Replace logic board. Retain customer's DIMMs.
7 Replace floppy drive cable.
8 Replace floppy drive.