Avaya MCC1 Installation And Upgrades page 302

System 75 Small-Cabinet to R8si (Blowback)
Task List: System 75 Small Cabinet to R8si
Prepare and install new control carrier [75 small upgrade]
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1
Install the J58890AH control carrier in position A by lining up the plastic alignment tips on the
top rear of the carrier with the screw holes in the cabinet. These alignment tips will support the
carrier while the screws are being installed. Ensure that the power cords are properly placed in
the slots at the sides of the carrier.
CAUTION:
Carefully realign the threads on the self-tapping screws by turning them clockwise a turn
or two before tightening them to avoid stripping the threads out of the framework.
2
Fasten the carrier into position with 4 self-tapping screws saved from the removal of the old
carrier.
3
Connect the P2 and P1 (large and small) connectors to the rear of A carrier. If necessary, to get
enough slack in the cables, cut the tie wrap holding the intercabinet cable from the upright in the
area of the carrier being installed. Snap the connector lock into place to ensure connection is
properly made.
4
Connect the 8 ground straps from the B carrier to the new A carrier (see
grounding jumpers,
A carrier was removed.
5
For the AC-powered control carrier, install the 2 new carrier-ground straps. One strap connects
ground point 1 to the A-carrier frame (on the right side), and the other connects ground point 8 to
the A-carrier frame (on the left side).
6
Connect the new TDM/LAN cable (WP-91716 L6) between the A and B carriers (see
TDM/LAN connections for R7si/R8si PPN,
connections,
blocks marked on the left side of each carrier.
7
Replace the existing bus terminators (AHF1) with the new ZAHF4 bus terminators. (See
76, TDM/LAN connections for R7si/R8si PPN,
connections,
8
Install the front trim plates on the A carrier. Install the fan trim plate.
9
Peel the old decal strip (designation strip) from the trim plates. Then install the new decal strip at
the bottom of the trim panel.
10
Install the connector-panel decal on the rear connector panel.
11
Install the 631-type power units into the A carrier. Install the new 631DB1 in the right side of the
carrier, and reuse the old 631-type power supply in the left side. Do not interchange the units.
The 631AR, 631WA1, or 631DA1 is installed in the left side, while the new 631DB1 is installed
in the right side (see
12
If the system is equipped with neon message waiting, install the previously removed TN752 or
TN755B power unit in port slots 12 and 13 of the carrier (adjacent to the 631DB1).
13
Connect the power cords to the power units. The power cords are the white cables equipped with
plugs that are run through the slots in the front of each carrier (see
on page 304).
302
on page 303). These straps were left connected to the B carrier when the old
on page 304 table). The cable is connected to the A and B carriers at the pin-field
on page 304 table).
Figure 77, Locations of power units,
on page 303 and the Table 13, TDM/LAN
on page 303 and the Table 13, TDM/LAN
on page 304).
Figure 78, 631-type power unit,
SI Installation and Upgrades
Figure 75, Locations of
Figure 76,
Figure
June 2004