Filter
Top Products
DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Troubleshooting
6-20Troubleshooting ATM-PNC
6
15. If the 316X CSU or
DSU/CSU fails the
DTE or RLB loopback
tests
Remove the H600-307 DS1 cable from the splitter and the
splitter from the DS1 circuit pack
16. Remove splitter Remove the splitter from the DS1 circuit pack
17. Reconnect the cable Reconnect the H600-307 cable directly to the DS1 circuit
pack
After about 30 s, all the alarm LEDs on the 316X DSU/CSU
should go out.
If the alarm LEDs on the 316X CSU or DSU/CSU do not go
out, go to step 19.
18. Test circuit pack Test the DS1 circuit pack (test board
UUCSS
).
If any one of Test 138 through 145 fails, follow the repair
procedures listed in DEFINITY ECS Maintenance for R8r.
19. Check for errors Wait 15 minutes and check that the list measurements
ds1 summary
UUCSS
report is free of any errors. Use
Table 3-6 to help interpret the report.
20. Replace the splitter If the alarm LEDs on the 316X are not lit, replace the
splitter. If the splitter has already been replaced, escalate
to Tier 3.
21. Test the DS1 circuit
pack
If the alarm LEDs on the 316X extinguish with the new
splitter installed, perform a test board UUCSS and press
Enter and verify that the DS1 circuit pack passes tests 138
through 145.
If any one of Test 138 through 145 fails, follow the repair
procedures listed in DEFINITY ECS Maintenance for R8r.
22. Check error report Wait 15 minutes and perform a list measurements ds1
summary UUCSS and verify that the DS1 circuit pack is
free of errors. Use
Table 3-6 to help interpret the report.
23. Release circuit pack If there are no errors in step 22, release the DS1 circuit
pack (release board UUCSS).
24. If the alarm LEDs on
the 316X fail to go out
Reseat the DS1 circuit pack.
25. Escalate if necessary If step 24 still fails, escalate to Tier 3
Table 6-8. Troubleshooting 400A T1 synchronization (through a DSU/CSU) — Continued
√ Step Action Description
Continued on next page