Lucent Technologies Comcode 108678723 manual Troubleshooting 400A synchronization through an Icsu

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000

6Troubleshooting

		Troubleshooting ATM-PNC		6-18
Table 6-7. Troubleshooting 400A synchronization (through an ICSU) —
	√	Step	Action	Description
		3.	Reseat circuit pack	Reseat the DS1 circuit pack.
		4.	Retest the circuit	Repeat the test (test board UUCSS).
			pack	If Tests 138 through 145 pass, go to step 14 (release).
				If any test fails, go to step 5.
		5.	Busyout the DS1	To suppress alarms on the DS1 circuit pack, type busyout
			circuit pack	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	Reconnect the ICSU module directly to the back of the
			DS1 circuit pack	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	Reseat the DS1 circuit pack and check the Amphenol
			pack	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	Release the DS1 circuit pack (release board UUCSS).
			pack
		15.	Verify active	Verify that the designated DS1 circuit pack is now the
			synchronization	active sync source (status synchronization).
			source