Avaya S8700 Series, Maintenance Manual

Page: 2370 / 2618

Maintenance-Object Repair Procedures
555-233-143 8-1648 Issue 1 May 2002
7,
129,
131, or
133
(cont’d) FAIL
(cont’d)
NOTE:
If the loop-around and conference circuit test fails for every port on a
circuit pack, a -5 Volt power problem is indicated. If a TN736 or TN752
power unit circuit pack is present, either the 631DB AC power unit or
the 676B DC power unit may be defective. (The 631DB power unit is
used in a medium cabinet powered by an AC source. The 645B power
unit is used in a medium cabinet powered by a DC power source.) The
system may contain a TN736 or TN752 power unit or a 631DB AC
power unit, but not both types of power units. To investigate problems
with a 631DB AC or 645B DC power unit, see
‘‘CARR-POW (Carrier
Power Supply)’’ on page 8-393 . If a red LED on TN736 or TN752
power unit circuit pack is on, replace the pack.
If the test fails on more than 1 port, check for errors on the TONE-BD or
the TONE-PT. If errors, take appropriate actions. When the tone errors
are cleared, rerun the test. If the test fails again, see FAULT
ISOLATION in this table above.
PASS Tie trunk Looparound and Conference test is successful. This port is
functioning properly.
1. If users are reporting troubles, examine loop connections to the port.
0 NO
BOARD The test could not relate the internal ID to the port (no board).
1. Verify that the board’s translations are correct. Translate the board, if
necessary.
2. Issue the busyout board command.
3. Issue the reset board command.
4. Issue the release busy board command.
5. Issue the test board command. This should re-establish the linkage
between the internal ID and the port.
Table 8-640. Test #33 Looparound and Conference Circuit Test — Continued
Error
Code Test
Result
Description / Recommendation
Continued on next page