Order Of Installation; Required Tools And Safety Items; Safety Guidelines - Juniper E Series Hardware Manual

ERX 7.0.x Hardware Guide
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. Then check, if applicable, that the module matches its
corresponding module (I/O module or line 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.

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 slot diagnostics run when a line 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.

Required Tools and Safety Items

You need the following tools to install a line module:

Safety Guidelines

Before and during the installation process, observe the following precautions:
WARNING: Do not work on the system or connect or disconnect cables during
lightning activity.
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Safety Guidelines

A Phillips screwdriver
An ESD wrist strap