N Installing The Modules - AT&T MERLIN LEGEND Release 3.1 Installation Manual

Installing the Modules
Installing the Modules
!
CAUTION:
Use a properly grounded wrist strap to prevent damage from
electrostatic discharge (ESD) when installing the modules, and avoid
touching leads, connectors pins, and other components.
Guidelines
Follow these guidelines when you install modules, as indicated on the Control
Unit Diagram of Form 1, System Planning:
Do not leave empty slots between modules. The system ignores
modules installed beyond any empty slot.
If a phantom module (a programmed empty slot) is indicated on the
Control Unit Diagram, make sure the slot remains empty and do not
install any modules to the right of it. The system ignores any modules
installed to the right of a programmed empty slot.
Make sure you install each module in its assigned slot. If you install a
module in the wrong slot, the system will not function properly.
Be sure to place all 012 modules and all 008 OPT modules without
built-in ring generators in carriers with modules that have ring
generators so that the modules without ring generators can be
supported.
NOTE:
All 016 modules and some 012 modules (apparatus code 517G13
or later) have built-in ring generators.
Once you have installed the power supply and the processor in the
basic carrier, use the remaining slots for the modules as follows:
— Basic carrier: slots 1 through 5
— First expansion carrier: slots 6 through 11
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Installing the Control Unit