Maintenance-Object Repair Procedures
555-233-143
8-1030 Issue 1 May 2002
Management Terminal Channel Local
Loop-Around Test (#228)
This test is destructive.
This test checks TN775D on-board circuitry associated with the serial link for the
management terminal connection. This test will not cause the local terminal login
to drop, but any data displayed on the terminal while the test is running will be lost.
FAIL PN’s Maintenance circuit pack did not respond to Sanity Handshake and the
test timed out.
1. Verify that the carrier A power units are good. If the -5 Volt unit is defective
in the A carrier, then communication with the PN’s Maintenance circuit
pack will not be possible.
2. If the -5 Volt unit is good and this test continuously fails, background
maintenance will automatically escalate to an PN’s Maintenance circuit
pack Reset test (#306). Otherwise, manually reset an PN’s Maintenance
circuit pack by issuing the test maintenance long command and
evaluating any generated error codes from Test #306. If Test #306 passes,
this test should also PASS. Use the following steps to determine whether
the PN’s Maintenance circuit pack or its serial link, is defective:
Duplicated Port Network Connectivity (PNC):
1. Switch PNC by entering reset pnc interchange.
2. Run the short test sequence against the PN’s Maintenance circuit pack. If
Test #106 still fails, replace the Maintenance circuit pack and retest.
Otherwise, follow the error routines for any errors that are logged by this
short test.
Unduplicated PNC:
1. Replace the PN’s Maintenance circuit pack, and invoke the short test
sequence against it.
2. If error persists, replace the PN Expansion Interface circuit pack, at a time
when the PN can go down with minimal inconvenience.
3. If the error still persists, the problem is with the actual serial link in A carrier
backplane and not with the PN’s Maintenance circuit pack.
PASS The communications path to and from the PN’s Maintenance circuit pack is
sane, and the Maintenance circuit pack can read and report the correct PN
cabinet type. The Maintenance circuit pack may still have problems related to
Tests #228, #229, #303, or #306.
Table 8-406. Test #106 Sanity Handshake Test — Continued
Error
Code
Test
Result Description / Recommendation
Continued on next page
To Next Page
Loading...
