Juniper QFabric QFX3000-G Hardware Documentation page 680

QFX3000-G QFabric System Hardware Documentation
630
CAUTION: When you switch Control Board mastership, or when a master
Control Board fails, traffic is not forwarded over the QFX3008-I Interconnect
device until the backup Control Board assumes mastership.
CAUTION: Do not lift modules by holding the ejector levers. The levers cannot
support the weight of the module. Lifting the module by the levers might
bend the levers, and the bent levers prevent the board from being properly
seated in the chassis.
Before you begin to remove a Control Board:
Ensure that you understand how to prevent ESD damage. See
Electrostatic Discharge Damage" on page
(Recommended) Take the Control Board offline. See
in a QFX3008-I Interconnect Device" on page
Ensure that you have the following parts and tools available to remove a Control Board
from a QFX3008-I Interconnect device:
Electrostatic discharge (ESD) grounding strap
Antistatic bag or antistatic mat
Replacement Control Board
To remove a Control Board from a QFX3008-I Interconnect device (see
Figure 256 on page 631):
Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
1.
point on the chassis.
Place the antistatic bag or antistatic mat on a flat, stable surface.
2.
Pull both the ejector levers outward simultaneously, away from the faceplate of the
3.
Control Board, until they go no further. This action causes the Control Board to slide
out of the chassis slightly.
Grasp the ejector levers and pull the Control Board out about halfway.
4.
Taking care not to touch the leads, pins, or solder connections, place one hand
5.
underneath the Control Board to support it, and slide it completely out of the chassis.
Place the Control Board in the antistatic bag or on the antistatic mat.
6.
"Prevention of
360.
"Taking a Control Board Offline
627.
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