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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-819MET-LINE (MET Line)
10
57 FAIL Hybrid Circuit Test failed. This could result in noisy or bad connections.
1. Run circuit pack tests to check the Tone Generator circuit pack
and the Tone Detector circuit pack, using test board PCSS short
command.
2. Resolve any problems that are detected on the Tone Generator
circuit pack or Tone Detector circuit pack.
3. If the Tone Generator and Tone Detector circuit packs are
functioning properly, and the test still fails, replace the MET Line
circuit pack.
NOTE:
If the MET Circuit and Conference Circuit Test fails for all ports
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 either a TN736 or a TN752 power unit circuit pack
OR a 631DB AC power unit, but not both types of power units.
To investigate problems with a 631DB power unit, refer to
CARR-POW (Carrier Port Power Unit for AC-Powered Systems)
Maintenance documentation. To investigate problems with a
645B power unit, refer to CARR-POW (Carrier Port Power Unit for
DC-Powered Systems) Maintenance documentation.
PASS Hybrid Circuit and Conference Circuit Test passed. The hybrid circuitry
is transmitting properly.
1. If complaints still exist, investigate by using other port tests, and by
examining the station, wiring, and connections.
Table 10-274. TEST #57 MET Circuit and Conference Circuit Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page