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Maintenance-Object Repair Procedures
555-233-143
8-636
Issue 1 May 2002
FAIL
DS1 Interface circuit pack failed the CSU Equipment Loopback test.
1. Retry test ds1-loop UUCSS ds1/csu-loopback-tests.
2. If the ELB test continues to fail, then either the TN767E board, the CSU
module/T1 sync splitter, or the I/O cable between the backplane and the
120A1 CSU module or the 401A T1 sync splitter (or any combination
thereof) has failed. Attempt to isolate the problem to one of these areas.
Replace the CSU module/T1 sync splitter, and run test ds1-loop UUCSS
ds1/csu-loopback-tests again.
3. If the ELB test continues to fail, then replace the TN767E board and run
test ds1-loop UUCSS ds1/csu-loopback-tests again.
4. If the ELB test continues to fail, the problem could be in the I/O cable
between the backplane and the 120A1 CSU module or the 401A T1 sync
splitter.
PASS
The ELB test executed successfully. The test pattern was transmitted and
received successfully over the connection from the TN767E DS1 board to the
near-edge of the 120A1 CSU module/T1 sync splitter.
0
NO
BOARD
The test could not relate the internal ID to the port (no board).
This could be due to incorrect translations, no board is inserted, an incorrect
board is inserted, or an insane board is inserted.
1. Verify that the board’s translations are correct. Use the add ds1 UUCSS
command to administer the DS1 interface if it is not already administered.
2. If board was already administered correctly, check the error log to
determine whether the board is hyperactive. If so, the board was shut
down. Reseating the board will re-initialize it.
3. If the board was found to be correctly inserted in step 1, issue the busyout
board command.
4. Issue the reset board command.
5. Issue the release busy board command.
6. Issue the test board long command.
This should re-establish the link between the internal ID and the port.
Table 8-255.
Test #1210 CSU Equipment Loop-Back Test —
Continued
Error
Code
Test
Result
Description / Recommendation
Continued on next page
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...