Apple Performa 6400/180 - Manual (Page 84)

Troubleshooting Symptom Charts/Hard Drive - 10
Hard Drive
Internal or external
hard drive does not
spin up
1 Verify that all hard drive connections are secure.
2 Verify that external drive is properly terminated.
3 Reseat logic board.
4 Replace internal IDE hard drive.
5 Replace logic board. Retain customer’s DIMMs.
6 Replace chassis/wiring harness.
Note:
The chassis/wiring harness is not a separate
replacement part. Order the metal chassis that contains the
chassis/wiring harness.
Internal hard drive
runs continuously
1 Verify that system software is version 7.5.3 or later.
2 Replace hard drive cable.
3 Replace internal hard drive.
4 Replace logic board. Retain customer’s DIMMs.