Juniper E120 - RELEASE 11.1.X HARDWARE GUIDE 3-25-2010 Hardware Manual page 55

Ground yourself by using an antistatic wrist strap or other device and connect
1.
it to one of the ESD grounding jacks on the chassis.
Choose the slot in which you want to install the module.
2.
SRP module – slot 6 or 7
SFM module – slot 8, 9, or 10
See Figure 12 on page 28 and Figure 14 on page 29 for module locations.
NOTE: Four of the five fabric slots (SRP and SFM modules) must have a module
installed for the router to function. A minimum system configuration requires all
three SFMs and at least one SRP module to be installed.
With a No. 2 Phillips screwdriver, loosen the captive screws that secure the blank
3.
filler panel covering the empty chassis slot, if present, and remove the filler
panel.
Remove the module from its antistatic bag, being careful not to touch module
4.
components, pins, leads, or solder connections.
Verify that the ejectors are in the open position, as shown in Figure 19 on
5.
page 39.
Figure 19: Closing Ejectors from the Open Position
Chapter 4: Installing Modules
Installing an SRP Module or SFM Module
39