Nortel Meridian 1 Replacement Manual page 305

6 The message "Database backup complete!" will be displayed, and the
Tools menu will reappear.
7 Remove the 2MB diskette from the IOP/CMDU, but do not reboot the
system at this point.
Upgrading Core 1
1 In systems equipped with an NT6D63 IOP and NT6D64 CMDU,
perform the following two steps to remove these cards:
— To remove the IOP:
a Set the ENB/DIS switch to DIS on the IOP being upgraded.
b Remove the IOP.
— To remove the CMDU:
a If there is a floppy disk in the CMDU you are upgrading, remove the
floppy disk.
b Set the power switch on the front of the CMDU, if present, to OFF
(down).
c) Wait at least 10 seconds, then unhook the locking devices on
the CMDU and gently pull the unit out of the card cage.
2 In system equipped with an NT5D20 IOP/CMDU, perform the
following two steps to remove this card:
a Set the ENB/DIS switch on the IOP/CMDU to DIS.
b Unhook the locking devices and remove the IOP/CMDU.
3 Locate the round 1/2" diameter IODU/C Security Device.
4 Make sure the 8-digit code on the keycode diskette matches the 8-digit
code on the Security Device.
5 With the Nortel side facing upward, slide the Security Device between
the black round security device holder on the top right hand corner of the
IODU/C card and the holder clip. Do not bend the clip more than
necessary when inserting the Security Device. Ensure that the Security
Device is securely in place.
Replacing equipment
Hardware replacement
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