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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Troubleshooting
6-18Troubleshooting ATM-PNC
6
3. Reseat circuit pack Reseat the DS1 circuit pack.
4. Retest the circuit
pack
Repeat the test (test board
UUCSS
).
If Tests 138 through 145 pass, go to step 14 (release).
If any test fails, go to step 5.
5. Busyout the DS1
circuit pack
To suppress alarms on the DS1 circuit pack, type busyout
board
UUCSS
and press Enter.
6. Remove ICSU Remove the ICSU module from the splitter.
7. Remove splitter Remove the splitter from the DS1 circuit pack.
8. Put ICSU directly on
DS1 circuit pack
Reconnect the ICSU module directly to the back of the
DS1 circuit pack (without the splitter) and reseat the DS1
circuit pack.
After approximately 30 seconds the DS1 Status LEDs
should extinguish, leaving only the green Status 3 LED on
steady.
9. Test the circuit pack Test the circuit pack (test board
UUCSS
) 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.
10. Replace splitter If the tests pass, replace the splitter onto the back of the
DS1 circuit pack.
11. Reseat the circuit
pack
Reseat the DS1 circuit pack and check the Amphenol
connectors, making sure they are seated properly.
12. Test the circuit pack Test the circuit pack (test board
UUCSS
) 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 or
replace the splitter.
13. Escalate if necessary If the ICSU tests OK, go to step 14.
If step 12 still fails, escalate to Tier 3 or replace the splitter.
14. Release the circuit
pack
Release the DS1 circuit pack (release board
UUCSS
).
15. Verify active
synchronization
source
Verify that the designated DS1 circuit pack is now the
active sync source (status synchronization).
Table 6-7. Troubleshooting 400A synchronization (through an ICSU) — Continued
√ Step Action Description
Continued on next page