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 Diag nostic Test
#823 with two exceptions: a test is run on the host adap ter dual port RAM during
the reset test and a test involving system b us mastership is run during the
diagnostic test.
The reset test can be run in two ways: as a part of the lon g 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 c ause the host
adapter to be p laced in an internal "held reset" state. In this state the host
adapter will not run any bac kground maintenance an d will not respond to any
commands excep t a reset command. The only way to restore the host adapter to
service is for it to pass the reset c ommand. Demand tests will not run until then.
If the reset test is requested as part of t he long host adapter test seq uence,
failure of the test causes the host adap ter to be placed in a softwa re
"out-of-service" state. From this state the host adapter can be restored to service
by either passing the long host adapter test seq uence the proper number o f
times or by passing the reset c ommand. Refer to the Diagnostic Test #823 for a
more complete desc ription of the test coverag e.
Read and Clear Test (#822)
Host Adapter Reset (#893) X ND
1. D = Destructive, ND = Non-d estructive
Table 9-341. System Technician-Demanded Tests: DS1-BD — Continued
Order of Investigation Short Test
Sequence Long Test
Sequence Reset Board
Sequence D/ND1
Continued on next page