DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-837EXP-INTF (Expansion Interface Circuit Pack)
9
3 FAIL The reset over the optical fiber failed.
1. Execute the test board PCSS command on the PPN neighbor EI circuit
pack located on the opposite end of the fib er from this EI 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 EI circuit pack is in the EPN, temporarily remove the EPN
Maintenance circuit p ack.
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 Error Log for the EPN Tone-Clock errors that were resolv ed
about the same time 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 E I 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 EI 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 EI 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 EI circuit pack and the lightwave transceiver are healthy,
the problem must lie with the EI circuit pack and its lightwave transceiver
on the EPN end of the fiber or with the fiber itself. Test the EPN EI circuit
pack with the manual loop back procedure an d investigate the test results.
Table 9-316. TEST #224 Expansion Interface Test — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page