DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-895H-ADAPTR (MSS Host Adapter)
9
Host Adapter Reset Test (#820 and #893)
The Reset Test #820 resets the host adapter circuit on the MSSNET circuit pack
and runs an initialization test. The initialization test is similar to the Diagnostic Test
#823 with two exceptions: a test is run on the host adapter dual port RAM during
the reset test and a test involving system bus mastership is run during the
diagnostic test.
The reset test can be run in two ways: as a part of the long host adapter test
sequence (
test host-adapter long
) or as a result of the reset host adapter
command (
reset host-adapter
). Failure of the reset command cause the host
adapter to be placed in an internal "held reset" state. In this state the host
adapter will not run any background maintenance and will not respond to any
commands except a reset command. The only way to restore the host adapter to
service is for it to pass the reset command. Demand tests will not run until then.
If the reset test is requested as part of the long host adapter test sequence,
failure of the test causes the host adapter to be placed in a software
"out-of-service" state. From this state the host adapter can be restored to service
by either passing the long host adapter test sequence the proper number of
times or by passing the reset command. Refer to the Diagnostic Test #823 for a
more complete description of the test coverage.
Read and Clear Test (#822)
Host Adapter Reset (#893) X ND
1. D = Destructive, ND = Non-destructive
Table 9-341. System Technician-Demanded Tests: DS1-BD — Continued
Order of Investigation
Short Test
Sequence
Long Test
Sequence
Reset Board
Sequence D/ND
1
Continued on next page
