Nortel Meridian 1 Replacement Manual page 259

2 Set the ENB/DIS switch to DIS.
3 Tag and disconnect cables to the card.
4 Unhook the locking devices on the card; pull it out of the card cage.
Installing equipment
1 Set the ENB/DIS switch to DIS on the replacement card.
2 Set option switches on the replacement card the same as on the card you
removed. If there is a vintage change, be sure to check Circuit Card:
Installation and Testing (553-3001-211) for any differences.
Incorrect switch settings on the SBE can cause a system failure.
3 Insert the replacement card into the vacated slot and hook the locking
devices.
4 Connect cables to the replacement card.
5 Set the ENB/DIS switch to ENB on the replacement card.
6 Software enable and test the SBE card:
ENL EXT xxx
TCPU
SCPU
a When the process is complete, you will receive a system response.
b If there is a problem, a CED system message is generated and the red
LED lights on the faceplate of the appropriate card.
c If there is no problem, exit LD 35:
****
7 Tag defective equipment with a description of the problem and package
it for return to a repair center.
Replacing equipment
CAUTION
Page 259 of 362
Hardware replacement