OAK SCSI 4, User Manual

Page: 52 / 54

In use, the error `SCSI Phase error' or
`SCSI bus not free'occurs.
These errors are usually caused by either damaged 50 way cables, or
by having 2 or more devices on the SCSI bus with the same ID.
Visually inspect cables, and check ID numbers of connected SCSI
devices (if you don't know how to do this, you are unlikely to generate
the error by adding devices with the same ID number). These errors
can also be caused by an unterminated SCSI bus, or a SCSI bus with
too many termination resistors. The SCSI bus should have terminating
resistors in the devices at each end (typically the controller card and
the last drive), but not on any devices in between.
These are the most common errors that occur according to user
feedback. Further help may be found in the Read Me file on the
formatter disc. If you experience any difficulties, please let us know so
that we can include any additional helpful material in the Read -Me
file.
Page 45