AT&T MERLIN LEGEND Release 2.0 Installation Section page 283

Initializing and Testing the System
3. Change the feature module:
a . Turn off the AC power switches on the control unit in the
following order:
b . Unplug
ports on the processor module.
c . Remove the processor module from Slot 0.
d . Remove the feature module from the processor module and
replace it with a Release 1.1 or 2.0 feature module.
Reinstall the processor module in Slot 0.
e .
f . Plug the interface cords into the SPM and SMDR printer ports on
the processor module.
Turn on AC power to the control unit in the following order:
g .
4. Perform a frigid start.
This step ensures that
values.
To upgrade to Release 1.1, Use the System Erase function on the
SPM Maintenance menu (Maintenance → Slot → 00 →
Demand Test → System Erase).
To upgrade to Release 2.0, use the System Erase function:
Maintenance → Slot → 00 → Demand Test → System Erase (Line
5, left button) twice → Yes
See the Maintenance and Troubleshooting guide for additional
information on System Erase.
7 - 6
Initializing the System
Basic carrier
Expansion carrier 1, if present
Expansion carrier 2, if present
the interface cords from the SPM and SMDR printer
Expansion carrier 2, if present
Expansion carrier 1, if present
Basic carrier
all system programming is returned to default