AT&T MERLIN 1030 Installation Manual page 15

Connect the Ribbon Cables and Ground Wires
You should find three gray ribbon cables and two ground wires hanging from
the backplane of the expansion unit. Connect them to the backplane of the con-
trol unit as follows:
1
Find the ribbon cable labeled Network hanging from pins on the left side
of the expansion unit's backplane.
2
Connect the free end of this cable to the set of pins labeled Network
on the backplane of the control unit.
CAUTION: Be very careful not to bend the pins.
3
Find the ribbon cable connected to the pins labeled I/O-1 on the right
side of the expansion unit's backplane.
4
Connect the free end of this ribbon cable to the pins labeled I/O-1 on
the backplane of the control unit.
5
Find the ribbon cable connected to the pins labeled I/O-2 just to the right
of the I/O-1 pins on the backplane of the expansion unit.
6
Connect the free end of this ribbon cable to the pins labeled I/O-2 on
the backplane of the control unit.
7
Locate the ground wire with the metal fork at each end hanging from
the ground screw (GS-1) on the lower middle of the expansion unit's
backplane.
8
Locate the ground screw labeled GS-1 at the upper middle of the con-
trol unit's backplane, and loosen (but do not remove) it.
9
Insert the metal fork on the free end of the ground wire beneath the head
of the ground screw on the control unit so that the prongs on the fork
fit around the post of the ground screw.
10
Tighten the ground screw over the forked end of the ground wire.
11
Locate the ground wire with the 2-pin connector hanging from the far
right side of the expansion unit's backplane.
12
Attach the connector on the free end of this ground wire to the pins
labeled 100 and 000 at slot 1 on the backplane of the control unit.
Now that the units are connected, fold the slack in the ribbon cables into the
opening between the units, and reattach the protective back panels.
Network
1, 2
Ground wire
7, 8
Ground wire
with 2-pin
connector
11, 12
I/O—1
3, 4
I/O—2
5, 6
9, 10
13