Apple quadra 800.ws 80 Service Manual

 

 Troubleshooting

Symptom Charts - 11

 

Single internal hard 

drive does not 

operate; drive 

doesn’t spin

1 Replace hard drive power cable.

2 Replace hard drive.

3 Replace power supply.

No internal SCSI 

drives operate

1 Verify there are no duplicate SCSI device addresses.

2 Replace SCSI data cable.

3 Replace power supply.

4 Replace logic board.  Retain customer’s SIMMs.

Works with internal 

or external SCSI 

devices but not with 

both

1 Verify there are no duplicate SCSI device addresses.

2 Replace terminator on external SCSI device.

3 Verify that SCSI device at end of internal SCSI data cable is 

only device terminated.

4 Refer to appropriate manual to troubleshoot defective 

external device.