Maintenance Object Repair Procedures
555-233-123
10-1870 Issue 4 May 2002
1311 FAIL The Integrated CSU (I-CSU) Module Equipment Loopback (ELB)
test (#1210) failed. This test is executed by the I-CSU during
I-CSU power-up/reset (i.e., the UDS1 board is physically inserted
and a CSU Module or a Sync Splitter is already installed) or when
the CSU Module/
Sync Splitter is plugged on to an already
initialized DS1 board. The ELB test is also executed as part of the
command test ds1-loop UUCSS ds1/csu-loopback-tests for the
CSU Module and T1 Sync Splitter.
1. Execute the test ds1-loop UUCSS ds1/csu-loopback-tests
command.
2. If the ELB test continues to fail, then either the UDS1 board,
the CSU Module/T1 Sync Splitter, or the I/O cable between
the backplane and the CSU module/T1 Sync Splitter (or any
combination thereof) has failed. Attempt to isolate the
problem to one of these areas. Begin by replacing the CSU
Module/T1 Sync Splitter and running the test ds1-loop
UUCSS ds1/csu-loopback-tests command again.
3. If the ELB test continues to fail, then replace the UDS1 board
and run the test ds1-loop UUCSS ds1/csu-loopback-tests
command again.
4. If the ELB test continues to fail, the problem could be in the
I/O cable between the backplane and the CSU module/T1
Sync Splitter.
1312 FAIL The Integrated CSU (I-CSU) Module Repeater Loopback (RLB)
test (#1211) failed. This test is executed during I-CSU/Sync
Splitter power-up/reset (i.e., the UDS1 board is physically inserted
and the CSU Module or the Sync Splitter is already installed) or
when the CSU Module/Sync Splitter is plugged on to an already
initialized DS1 board. The RLB test is also executed as part of the
command test ds1-loop UUCSS ds1/csu-loopback-tests for the
CSU Module/T1 Sync Splitter.
1. Execute the test ds1-loop UUCSS ds1/csu-loopback-tests
command.
2. If the RLB test continues to fail, then replace the CSU
Module/T1 Sync Splitter.
3. Run this test again.
Table 10-673. TEST #138 Loss of Signal Alarm Inquiry Test — Continued
Error
Code
Tes t
Result Description/Recommendation
Continued on next page
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