Juniper EX4200 Hardware Manual page 212

Before you begin installing an uplink module in the switch:
Ensure that you have taken the necessary precautions to prevent ESD damage (see
Electrostatic Discharge Damage" on page
Ensure that you have the following parts and tools available:
Electrostatic discharge (ESD) grounding strap (If a grounding strap is not available, follow the alternative
grounding method described in Step 1 of the following procedure.)
Cross-head screwdriver (provided in the uplink module kit)
To install an uplink module in the switch (see
1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
the ESD point on the chassis.
If a grounding strap is not available, hold the uplink module in its antistatic bag in one hand and touch
the exposed, bare metal of the switch with the other hand to ground yourself and the component.
2. Loosen the screws that secure the flip-up door covering the empty uplink module slot on the front
panel of the switch by using the cross-head screwdriver, flip the door upward, and remove the blanking
panel covering the empty uplink module slot.
NOTE: If you are removing an uplink module and installing another uplink module, wait for
at least 10 seconds after removing the uplink module before installing the new or the same
uplink module. If you do not wait for at least 10 seconds, the interfaces on the uplink module
might not come up.
3. Taking care not to touch module components, pins, leads, or solder connections, remove the uplink
module from its bag.
CAUTION:
ensure the uplink module is aligned correctly. Misalignment might cause the pins
to bend, making the uplink module unusable.
4. Using both hands, place the module in the empty slot and slide it in gently until it is fully seated.
5. Flip the door down and tighten the screws by using the cross-head screwdriver.
298).
Figure 65 on page
Before you slide the uplink module into the slot on the switch chassis,
"Prevention of
213):
212