User Guide

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-693EXP-INTF (Expansion Interface Circuit Pack)
10
3 FAIL The reset over the optical fiber failed.
1. Execute the test board PCSS command on the PPN neighbor
Expansion Interface circuit pack located on the opposite end of
the fiber from this Expansion Interface circuit pack. If Test #238
does not pass, follow the maintenance procedure associated
with this test result. Then perform the reset again.
2. If the Expansion Interface circuit pack is in the EPN, temporarily
remove the EPN Maintenance circuit pack.
3. Repeat the reset board PCSS command.
4. Reinsert EPN Maintenance circuit pack if it was removed.
5. Follow the procedure described in the "Relationship Between
Expansion Interface and Tone-Clock Circuit Packs" section if
the symptoms match those described there.
6. Check the Hardware Error Log for the EPN Tone-Clock errors
that were resolved about when the EPN went down. These EPN
Tone-Clock errors may have been resolved BECAUSE the EPN
went down. When there is no Tone-Clock generating the system
clock on an EPN, then an Expansion Interface circuit pack can
only be reset once. All subsequent reset attempts fail. It is also
possible that the system itself may have already tried to reset
the Expansion Interface circuit pack. Refer to the TONE-BD
(Tone-Clock) Maintenance documentation for recommended
maintenance strategy for Tone-Clock problems.
7. If the reset still fails, execute the Manual Loop Back Procedure
on the opposite PPN Expansion Interface circuit pack. This
procedure is described in the section preceding the "Hardware
Error Log Entries and Test to Clear Values" table for this MO. If
the Expansion Interface circuit pack and the lightwave
transceiver are healthy, the problem must lie with the Expansion
Interface circuit pack and its lightwave transceiver on the EPN
end of the fiber or with the fiber itself. Test the EPN Expansion
Interface circuit pack with the manual loop back procedure and
investigate the test results.
Table 10-197. TEST #336 Expansion Interface Reset Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page