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Maintenance Object Repair Procedures
555-233-123 10-514 Issue 4 May 2002
FAIL The test failed because the data received did not match the
data sent. This would indicate that there is a fault somewhere
in the transmit/receive path to the TDM Bus, which probably
results in data corruption over this port. This test may fail if
Network Control Data Channel 3 is not functioning properly.
1. Look for DATA-CHL errors in the Error Log. If present,
refer to DATA-BD (Network Control Circuit Pack)
Maintenance documentation.
2. Repeat this test.
3. If the test fails again, replace the Data Line circuit pack.
2000 FAIL The test failed waiting for the transmitted data to be looped
back.
1. Look for DATA-CHL errors in the Error Log. If present,
refer to DATA-BD (Network Control Circuit Pack)
Maintenance documentation.
2. Repeat this test.
3. If the test fails again, replace the Data Line circuit pack.
PASS The port can correctly transmit/receive data. User-reported
troubles on this port should be investigated by examining the
ADU, external wiring, and customer equipment.
Table 10-189. TEST #171 Digital Loop Around Test — Continued
Error
Code Test
Result Description/Recommendation
Continued on next page