Apple powermac g3 blue.white サービスマニュアル
Troubleshooting
Symptom Charts/Hard Drive - 50
4 If more than one SCSI device is on the SCSI chain, remove one
device at a time and retest. Replace the bad drive.
5 Replace internal SCSI data cable to which non-operational
devices are attached.
6 Reseat the SCSI PCI card. Replace the SCSI PCI card.
7 Replace power supply.
Works with internal
or external SCSI
devices but not with
both
1 Verify there are no duplicate SCSI device addresses.
2 Reseat SCSI cable connections going to the SCSI card.
3 Replace terminator on external SCSI device.
4 Verify that SCSI device at end of internal SCSI data cable is
only device terminated.
5 If more than one SCSI device is on the SCSI chain, remove one
device at a time and retest. Replace the bad drive.
6 Reseat the SCCI card, then try a known-good SCSI card.
7 Replace SCSI drive cables one at a time.
8 Disconnect external SCSI chain. Refer to appropriate manual
to troubleshoot defective external device.