Nortel Meridian 1 Replacement Manual page 265

Installing equipment
1 Set the ENB/DIS switch to DIS on the replacement 3PE 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.
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 Enable cards.
— In Options 51C, 61C, 81, and 81C, enable and test the CNI and 3PE
cards:
LD 135
ENL CNI c s p CPU (0 or 1). Slot (8–10), port (0 or 1) for
****
If the LED on the 3PE card turns off, go to Step 7. If the LED stays
lit, press the Man Int button to initialize the system.
In Options 51C, 61C,and 81C, if the 3PE card is in the
Core/Network, enable the clock controller card:
LD 60
ENL CC x
****
If there is a problem, a CED or CCED system message is generated and
the red LED lights on the faceplate of the appropriate card.
Replacing equipment
Option 81 and slot 12, port 0 for Options 51C,
61C, and 81C.
exit LD 135
exit LD 60
Page 265 of 362
Hardware replacement