Overview ! 43
Chapter 5: Installing Modules
To protect the modules and slots when installing modules, observe the following
guidelines:
Order of Installation
Before you attempt to install or replace a line module (inserted in the front of the
chassis), the corresponding I/O module (inserted in the rear of the chassis) should
already be in place. The system diagnostics run when a module is installed in a
chassis slot. If the corresponding I/O module is not present, the diagnostics fail, and
you need to remove and reinsert the module.
Table 4: Grounding jack locations
E-series Router Location
ERX-14xx model Front: inside front bezel in lower-left corner
Rear: upper-right corner
ERX-7xx model Rear: lower-right corner
ERX-310 router Front: lower-left corner
Rear: lower-right corner
CAUTION: When handling modules, use an antistatic wrist strap connected to the
E-series router’s ESD grounding jack. This action helps to protect the module from
damage by electrostatic discharge.
CAUTION: Always handle the module by its edges. Do not touch the components,
pins, leads, or solder connections.
CAUTION: If you meet strong resistance when attempting to seat the module using
the ejectors, remove it from the chassis and confirm that the slot is one designed
to hold the module. Also, be sure that you have aligned the top and bottom edges
in the correct matching tracks.
CAUTION: Be sure to cover every empty slot with a blank faceplate to protect the
system from dust or other foreign substances and to ensure proper system
cooling.
CAUTION: Do not discard the antistatic bag. When a module is not in use, store it in
an antistatic bag.
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