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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Troubleshooting
6-21Troubleshooting ATM-PNC
6
Troubleshooting synchronization
(401A/402A/403A)
To troubleshoot 401A/402A/403A synchronization problems, follow the
procedures in Table 6-9
.
Table 6-9. Troubleshooting 401A/402A/403A synchronization
√ Step Action Description
1. Check all connections If the LEDs on the DS1 circuit pack indicate an error
condition, or any of the tests associated with testing the
DS1 circuit pack fails, recheck all cables, connectors, and
the splitter connection to the back of the DS1 circuit pack.
2. Test the circuit pack Test the circuit pack (test board
UUCSS
).
If the tests pass, go to step 13 (release). If a test fails,
continue with step 3.
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 13 (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 splitter Remove the splitter from the DS1 circuit pack.
7. Connect cable
directly on DS1 circuit
pack
Reconnect the cable 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.
8. 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.
9. Replace splitter If the tests pass, replace the splitter onto the back of the
DS1 circuit pack.
10. Reseat the circuit
pack
Reseat the DS1 circuit pack and check the Amphenol
connectors, making sure they are seated properly.
11. 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.
Continued on next page