See E-Series System Basics Configuration Guide, Chapter 5, Managing Line Modules and SRP Modules for information about the halt command.
2 Ground yourself by using an antistatic wrist strap or other device.
3 Use a screwdriver to loosen the thumb screws located at the top and bottom of the module panel.
4 Pull the ejector handles located at the top and bottom of the module so that they are in position 2, as shown in Figure 5-6.
Enter the halt command.
1
Removing a Module E-Series Routers
The module stops sliding when the ejectors make contact with the front of the chassis.
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.
7 Insert the module into the midplane by simultaneously depressing both ejectors (as shown in Figure 5-5) and exerting forward pressure on the module.
8 Tighten the module’s captive screws using a Phillips screwdriver. Alternately turn each screw several times before tightening them completely to allow the module to sit correctly.
Removing a Module
Note: Although not required, it is recommended that you issue the slot disable command from the CLI before removing a module.
Caution: If you do not use the halt command before removing or powering down an SRP, the system’s NVS card may become corrupted.
To remove a module:

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Juniper Networks E-Series manual