Disk Drive Troubleshooting - Digital Equipment 3100R Series Service Maintenance Manual

Troubleshooting

Disk Drive Troubleshooting

Problem
Server does not
recognize an internal
SCSI device.
4-20
Possible Cause
SCSI device jumpers
incorrectly set.
SCSI ID conflicts.
Terminating resistors not
removed from the SCSI
device.
SCSI controller has failed.
Loose SCSI cable.
SCSI cables incorrectly
installed between SCSI
controller, SCSI device, or
SCA-2 backplane.
SCSI device has failed.
Action
Refer to the supplied kit installation
instructions.
Refer to the supplied kit installation
instructions and to the SCA-2 storage
backplane jumper configuration.
Remove terminating resistors. Refer to
the supplied kit installation instructions.
Replace the main logic board.
Secure all cable connections.
Check all cabling.
Replace SCSI device.
continued