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CONNECTION OF OPTIONAL UNITS
4. CONNECTION OF OPTIONAL UNITS
WARNING
Always unplug the AC plug from the outlet and power off the switch (STD BY) of the
CCU when working. If you do not, you may receive an electric shock.
Please do not touch the Power Supply Unit.
You may be exposed to dangerously high temperatures.
EXPANSION CARD
Three expansion cards are available. One expansion card can be connected to the 416 system.
Types of Expansion Cards
(1) 2 Exchange line / 8KT Expansion Card (VB-9260UK)
This expansion card allows two Exchange lines and eight Key telephones to be added on.
(2) 2 Exchange line / 8SLT Expansion Card (VB-9261UK)
This expansion card allows two Exchange lines and eight SLTs to be added on.
(3) 8 SLT Expansion Card (VB-9262UK)
This expansion card allows eight SLTs to be added on.
Attaching Expansion Cards
q Insert the connector cable from the expansion card to CN7 of the CCU.
w Align the protrusion of the expansion card with the installation groove on the CCU, and press
the both edges (A and B) of the expansion card to snap it into the place.
e Connect the connector cable on the expansion card to the ground terminal of the CCU.
r Use the Expansion DDK connector to add on to the Exchange line, Internal line or SLT.
Connecting the SLT
When connecting the SLT by an expansion card, use the master socket (LJU) to connect the con-
nector cable of the DDK connector to the CCU.
q Connect "A" to pin No.2 of the DDK connector and "B" to pin No.3.
w Connect to the SLT connector (SLT No.1) of the expansion card.
e Connect the "A" and "B" lines from the DDK connector to the "5" and "2" terminals of the
master socket (LJU).
r Connect SLT to the modular jack of the master socket (LJU).
NOTE : • A facsimile or telephone answering machine can be connected to the SLT connector in place of the SLT.
• In this manual "T" and "R" on the PCB have been replaced with "A" and "B", respectively, in the description.
I-16
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