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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance for csi systems
1-40Removing Power
1
3. Pull down on the locking lever until the circuit pack disconnects from its
socket.
4. Pull the circuit pack just enough to break contact with the backplane
connector, but do not remove it from the cabinet.
To reseat a circuit pack:
1. Push the unseated circuit pack back into the backplane connector.
2. Lift the locking lever until the pin engages.
3. Restore power to the PPN using the procedure provided in
‘‘Restoring
Power’’
To replace Control circuit packs:
1. Remove power from the PPN using the procedure in the
‘‘Removing
Power’’
1. Unseat the circuit pack.
2. Slide the circuit pack out of the slot.
3. Replace the circuit pack as per the following procedure:
NOTE:
If a new circuit pack does not correct the problem, install the original
circuit pack.
To install a new circuit pack or return the original one to service:
1. Carefully insert the circuit pack and push it all the way into its mounting
slot.
2. Lift the locking lever until the latch pin engages.
3. Restore power to the PPN using the procedure in
‘‘Restoring Power’’
.
4. Verify that the circuit pack LED indications are correct.
5. Test the replaced control circuit pack by issuing the system technician
commands after power has been restored.
Removing Power
When power is removed, the following features deactivate:
■ Attendant Trunk Group Control
■ Automatic Callback
■ Call Park
■ Make Busy for Direct Department Calling (DDC) and Uniform Call
Distribution (UCD)