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Infinite
4096
Hybrid
Key Telephone
System
a. Refer to Paragraph
500.4
- KSU Installa-
tion. The Expansion
KSU mounts
directly
to the right
of the Basic KSU. Refer to
Figure
500- 1.
Using
the template
pro-
vided,
identify
the screw hole locations.
Insert
the two screws
into
the wooden
backboard
and tighten
enough to hold the
weight
of the unit.
b. Remove
the connector
cover on the right
side
of the
Basic KSU. Refer
to Figure
500-3.
Remove the last three cards on the
right side of the Basic KSU.
c. Secure the two cabinets
together
by hook-
ing the mounting
brackets
on the left side
of the &pa.nsion
KSU over the ones on the
rfght side of the Basic KSU and at the same
time position
the Expansion
KSU on the
two screws inserted
in Step a above. Tigh-
ten the screws
on the right
side of the
Expansion
KSU.
d. Connect
the ground
of the Basic KSU to
the ground
of the Expansion
KSU with a
No. 8 or larger gauge wire.
e. Feed the three ribbon
cables through
the
slot created
by removing
the side cover and
plug
them
into
the Basic KSU. Refer to
Figure
500-Z 1.
f. Take the power cable located in the &pan-
sion KSU and feed it through
the slot in
the Basic KSU and plug it in. Then take
the ribbon
cable previously
connected
to
the Basic KSU and connect
it to the Ex-
pansion
KSU.
Installaffon
of the Expansion
KSU is now com-
plete.
Replace
PCB's removed
in Step b. above.
Power may also be restored.
Issue
1, Jan-
1992
600-3 1
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