User Guide
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-550DS1-BD (DS1 Interface Circuit Pack)
10
1320 FAIL A 120A1 CSU module hardware failure or an ICSU serial interface audit failure
was detected by the TN767E DS1 circuit pack.
1. Replace the CSU module, and then run the test again.
2. If the test continues to fail with this error code, replace the TN767E and
run the test again.
3. If the test continues to fail with this error code, the problem could be in the
I/O cable between the backplane and the CSU module.
1321 FAIL DTE LOS (loss of signal) was detected between the TN767E DS1 board and
the 120A1 CSU Module. Either the TN767E board, the 120A1 CSU Module, or
the I/O cable between the backplane and the CSU module (or any
combination thereof) has failed. Attempt to isolate the problem to one of these
areas.
1. Replace the CSU Module and run the test again.
2. If the test continues to fail with this error code, then replace the TN767E
board and run the test again.
3. If the test continues to fail with this error code, the problem could be in the
I/O cable between the backplane and the CSU module.
1322 FAIL No 5 volts power detected from the TN767E circuit pack to the 120A1 CSU
Module. Problem probably due to an open fuse on the DS1 board or a faulty
ICSU. NOTE
Do not swap DS1 boards as this may open the fuse on the new
board
.
1. Remove the TN767E from the system and reinsert.
2. Run the test again once the board has finished its reset.
3. If the test continues to fail with this error code, then replace the CSU
Module and run the test again.
4. If the test continues to fail with this error code, then replace the TN767E
board and run the test again.
5. If the test continues to fail with this error code, the problem could be in the
I/O cable between the backplane and the CSU module.
1323 FAIL A service affecting CSU Module audit failure was detected by the TN767E
DS1 circuit pack. All administered ports on the DS1 circuit pack are affected
and maintenance software will place the ports into the out-of-service state.
1. Replace the 120A1 CSU Module.
1324 FAIL A non-service affecting CSU Module audit failure was detected by the TN767E
DS1 circuit pack. No ports should be affected. No immediate action is
required. These errors indicate that the CSU Module hardware may have a
problem, and that it should be replaced when practical to avoid further
deterioration.
Table 10-150. TEST #138 Loss of Signal Alarm Inquiry Test — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page