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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-896MET-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 10-255. TEST #57 MET Circuit and Conference Circuit Test —
Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page