6
Installing the Module
Installing the Module in an Unused Slot
1.
Use a Torx T-10 or flat-bladed screwdriver to unscrew the screws in the
cover plate over the slot you want to use, and remove the cover. Store the
cover plate for possible future use.
2.
Hold the module by its bulkhead—taking care not to touch the metal
connectors or components on the board. Orient the module so the slot
letter on the switch face can be seen through the slot identification
window on the module when the module is installed.
3.
Insert the module into the slot guides and slide it into the slot until it stops.
Then press the module in firmly until it “snaps” into place. The module
bulkhead should be in contact with the face of the switch.
Note:
As shown in the illustrations on the next page, the switch may have
either vertical or horizontal module slots. In all switches, the modules can
be installed in only the orientation that allows the slot identification letter
on the switch to be viewed through the slot identification window on the
module.
Installation Precautions:
■
Static electricity can severely damage the electronic components on the modules. When
handling and installing the modules in your switch, follow these procedures to avoid damage
from static electricity:
•
Handle the module by its bulkhead or edges and avoid touching the components and the
circuitry on the board.
•
When installing the module, equalize any static charge difference between your body and
the switch by wearing a grounding wrist strap and attaching it to the switch’s metal body,
or by frequently touching the switch’s metal body.
■
Make sure that when installing a module that you use some caution to slide the module past
the initial contact with the RFI fingers on the switch chassis or on adjacent modules or
bulkheads before applying strong installation force. It is possible to dislodge the RFI fingers on
an adjacent module or bulkhead if the module you are installing is “biased” toward the fingers
and strong installation force is applied before the module you are installing has passed the initial
contact with the RFI fingers. The RFI fingers are identified in one of the illustrations on the
next page. If the RFI fingers are dislodged, make sure to unplug the switch, remove the RFI
fingers from the switch chassis, and reinstall them before powering on the switch.
■
For proper switch cooling and reduction of electromagnetic emissions, ensure that a slot cover
is installed on any unused module slot.
■
An incompletely installed module will temporarily disrupt switch operation and
prevent the module from operating. Make sure all modules are fully installed and
that you screw in the retaining screws to secure the module in place.
2347.book Page 6 Tuesday, May 9, 2000 12:53 PM
