Juniper Networks E-Series - Manual (Page 66)

CHAPTER 5
Installing Modules 5-6
To protect the modules and slots when installing modules, observe the
following guidelines:
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.
Order of Installation
Before you attempt to install or replace a 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.
Required Tools and Safety Items
You need the following tools to install a line module:
• A Phillips screwdriver
• An ESD wrist strap