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Apple quadra.lc 630.performa 640 Service Manual

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 Troubleshooting
Symptom Charts/Hard Drive - 12
 
Hard Drive
 
Internal hard drive 
runs continuously
1 Make sure System is version 7.1.2 (or later).
2 Replace hard drive cable.
3 Replace internal hard drive.
4 Replace logic board.  Retain customer’s  SIMMs.
Internal hard drive 
does not operate
1 Confirm that all hard drive connections are secure.
2 Reseat logic board.
3 Replace internal IDE hard drive.
4 Replace shield/wiring harness chassis.
5 Replace logic board.  Retain customer’s  SIMMs.
Hard drive not found 
when booted from CD-
ROM drive
Use Drive Setup 1.03.