Nortel Meridian 1 Manual page 843

20 Install the BTUs, provided in the upgrade package, in the Core card cage.
The components must be on the right (looking at the front of the card
cage):
• Install QPC477A9 between slots 4 and 5.
• Install QPC477B10 between slots 5 and 6.
21 Reposition the EMI shield (it looks like a brass grill) in the base of the
module. Tape over the front mounting tabs to hold the shield in position.
You will remove the tape later.
22 Slide the Core card cage about half-way into the module. Hold the card
cage firmly while you attach the power system connectors at the rear of
the module (refer to Figure 12-12 on page 12-55).
23 Attach the system monitor ribbon cables. (J1 goes down to the pedestal,
J2 goes up the column.)
24 Attach the frame ground (green) wire to the frame ground post on the
module. (A 5/16" socket wrench is needed for this operation.) Remove
the nut and the lockwasher at the top of the post. Put the frame ground
connector over the post. Reinstall the top lockwasher and the nut, then
tighten the nut down.
Note: For all of the connectors to fit on the post, you need to remove one
of the lockwashers. You must leave a lockwasher at the bottom of the
post and at the top of the post. Leave a third lockwasher between the
second and third, or the third and fourth, connectors.
25 Attach the logic ground (orange) wire. Remove one nut and the
lockwasher. Put the connector over the post, reinstall the lockwasher and
nut, then tighten the nut down. (A 3/8" socket wrench is needed for this
operation.)
26 Connect the module power connectors to the MPDU for AC power, or to
each other for DC power.
27 Slide the card cage the remainder of the way into the module.
28 Check the position of the EMI shield. If it has shifted, reposition it.
Remove the tape holding the EMI shield.
29 Secure the card cage to the module with the three screws in the front and
the two screws in the rear.
Upgrade system installation Upgrading to Meridian 1 system options
Upgrades to Meridian 1 option 81 12-79