IBM 5155 Manual To Operations page 140

11
You have stations that are not indicated on any
status screen, or a Cluster Access Error.
1. Run the system diagnostic tests on a station
that is not indicated on any status screen, or
that has a Cluster Access Error.
r"\
2.
If
the diagnostic test fails, have the unit that
contains the adapter serviced.
3. If the diagnostic test passes, continue doing
the diagnostic tests until all of the stations
that did not appear on any status screen
presentation or had a Cluster Access Error
are tested.
4. If the Cluster Adapters check good and the
stations did not appear on the Cluster status
screen presentations, contact your
Installation Manager as the coaxial cable or a
terminating plug is suspect. ".-.....,
Note: If you have more than one Cluster
Adapter installed in your system go back to
2200-1, and continue until all of the Cluster
Adapters are tested.
2200-12 Test
January 1984