Lucent Technologies R5SI 用户手册
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Routine Maintenance Procedures
Page 5-2
Handling Control Circuit Packs
5
circuit pack, follow the instructions below which explain how to unseat,
reseat, and replace circuit packs.
reseat, and replace circuit packs.
The procedures for unseating, reseating, and replacing control circuit packs vary
depending on the system configuration. Therefore, before performing these
maintenance activities, refer to the appropriate procedure below.
depending on the system configuration. Therefore, before performing these
maintenance activities, refer to the appropriate procedure below.
Procedure for a Standard Reliability Cabinet
To unseat a control circuit pack:
1. Remove power from the PPN using the procedure provided in
.
2. Slide the latch pin upward to unlock the locking lever.
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
To replace Control circuit packs:
1. Remove power from the PPN using the procedure in the
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.
circuit pack.
NOTE:
If you are replacing a TN790 circuit pack, refer to
in this chapter.
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.