Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Control Unit Problems
Page 4-112
100D Module Problems
Interpreting Test Results
If the test is successful, the connection between the CSU and the 100D module
is good, and the 100D module is probably okay. Continue with the next module
test; restore the module if you are finished testing.
If the test fails, find the error message in Table 4-8
and proceed as indicated.
Table 4-8. Internal Loopback Test Errors
Error Messages Corrective Action
Slot is not busied-out
Exit the test, busy-out the slot, and try again.
Slot empty or not valid
Exit the test and try again; be sure to type the
correct slot number. Do not indicate an empty slot
or the processor (00).
FMWR not in Standby Mode
Exit the test and try again; if this error persists,
record the errors on the repair tag and replace the
module being tested.
Test running too long
Exit the test and try again; if this error persists,
record the errors on the repair tag and replace the
module being tested.
Not in TEST/STANDBY mode
Exit the test and try again; if this error persists,
record the errors on the repair tag and replace the
module being tested.
Any errors on the CSU-lpbk
Failed screen
Check the cable between the 100D module and
the CSU; then retest. If the problem persists,
check the CSU settings.
Exit the test and try again; if this error persists,
record the errors on the repair tag and replace the
module being tested.
Any other error Record the errors on the repair tag and replace
the module; if in doubt, escalate to your technical
support organization.