Installing And Removing I/O Modules - 3Com 3C421600A Installation Manual

Installing and
Removing I/O
Modules
Installing an I/O
Module
You can install V.34 (analog), ISDN-BRI or a combination of V.34 and
ISDN-BRI modules in the RAS 1500 or RAS 1500 Expansion unit.
Use the following steps to install an I/O module:
CAUTION: The modules are not hot-swappable. Power off the unit
before installing, removing, or exchanging the module. Failure to
do so could damage the modules.
1 Before installing the I/O module, you must remove power from the unit
being upgraded. Remove the AC power cord from the back of the RAS
1500 Base Unit or RAS 1500 Expansion unit.
2 Remove the blank plate from the I/O module slot.
3 Unpack the I/O module from the box and remove the protective covering.
WARNING: Do not plug telephone cables into the I/O module until it is
installed in the unit. It could result in electric shock.
4 Position the I/O module in front of the empty slot so it is ready to slide in.
I/O modules should be installed in the left slot (slot 1) first.
5 Slide the I/O module into the slot until it is firmly in place.
6 Using the thumbscrews, screw the I/O module in place.

Installing and Removing I/O Modules

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