Juniper EX8208 Complete Hardware Manual page 176

Complete Hardware Guide for EX8208 Ethernet Switches
150
NOTE: We recommend that you install two SRE modules for redundancy. If
you install only one SRE module, we recommend that you install it in the slot
SRE0.
CAUTION: Do not lift the SRE module by holding the ejector levers. The levers
cannot support the weight of the module. Lifting the modules by the levers
might bend the levers, and the bent levers will prevent the SRE module from
being properly seated in the chassis.
Before you begin installing an SRE module in an EX8208 switch:
Ensure you understand how to prevent ESD damage. See "Prevention of Electrostatic
Discharge Damage on EX Series Switches" on page 298.
Ensure that you have the following parts and tools available to install an SRE module:
Electrostatic discharge (ESD) grounding strap
Phillips (+) screwdriver, number 2
To install an SRE module in an EX8208 switch (see Figure 55 on page 151):
Attach the electrostatic discharge (ESD) grounding strap to your bare wrist and
1.
connect the strap to one of the ESD points on the chassis.
Taking care not to touch the leads, pins, or solder connections, pull the SRE module
2.
out from the bag.
Pull both the ejector levers outward, away from the faceplate of the SRE module,
3.
until they go no further.
If the slot has a cover panel on it, unscrew the two screws on either side of the cover
4.
panel counterclockwise using the Phillips (+) screwdriver, number 2. Remove the
cover panel. Save the cover panel for later use.
Carefully align the sides of the SRE module with the guides inside the chassis.
5.
Ensuring that the SRE module is correctly aligned, carefully slide it into the chassis
6.
until you feel resistance.
Push both the ejector levers towards the faceplate of the SRE module until the levers
7.
are flush against the faceplate and are fully engaged.
Tighten the screws, one on each side of the SRE module, by turning them clockwise
8.
using the Phillips (+) screwdriver, number 2. Ensure that the SRE module is fully seated
in the chassis. It must be fully seated in order for it to be powered up.
Verify that the SRE module is installed correctly and functioning normally by checking
9.
the LEDs on the faceplate of the SRE module. The
steady green a few minutes after the SRE module is installed.
LED and LED should be lit
ON ST
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