Set The Control Unit Switches - AT&T MERLIN 1030 Installation Manual

IMPORTANT: A connected, loaded, but unpowered expansion unit can cause
electrical interference (crosstalk) during normal system operation. If you have
a Model 3070 control unit but do not need the control unit's added capacity right
away, you should either (1) leave the expansion unit empty (do not insert any
modules) and leave the power to the expansion unit off or (2) put the modules
into the expansion unit, turn the power to the expansion unit on when instructed
to do so, and leave it on during normal system operation.
Inserting Modules in Control Unit Slots
1
Locate the leftmost unoccupied slot in the control unit or expansion unit
with the same color code as the module you are inserting.
NOTE: Fill the slots in the control unit first, before going on to the ex-
pansion unit.
2
Remove the protective cover from the slot by pressing down on its top
with the tip of a screwdriver and pulling out at the top of the cover.
3
Align the module in the slot, making sure that the edges of the module
are in the grooves at the top and bottom of the slot, and slide the module
into the slot.
CAUTION: Do not force the module into the slot. If you have any dif-
ficulties, remove the module from the slot. Check the back of the
module and the back of the slot for bent pins. If you find any
damaged pins, contact your equipment supplier.
4
When the latch at the bottom of the module catches at the base of the
slot, press firmly at the front of the module with one hand while fitting
the latch into place with the other hand.

SET THE CONTROL UNIT SWITCHES

On the Processor Module:
1
Set switches A through G up.
2
Set switch H down.
NOTE: These are the proper settings for installing and testing the system. Later,
when you administer your system, you may have to reset them.
Processor Module
1
2
3
2
4
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