Juniper MX240 Hardware Manual page 317

CAUTION:
An arc smaller than a few inches in diameter can damage the cable and cause
problems that are difficult to diagnose.
6. Immediately cover each optical transceiver and the end of each fiber-optic cable with a rubber safety
cap.
7. Arrange the disconnected cables to prevent the cables from developing stress points.
8. Simultaneously turn both of the ejector handles counterclockwise to unseat the DPC.
9. Grasp the handles and slide the DPC straight out of the card cage halfway.
10. Place one hand around the front of the DPC and the other hand under it to support it. Slide the DPC
completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.
CAUTION:
to accept the full weight—up to 13.1 lb (5.9 kg)—as you slide the DPC out of
the chassis.
When the DPC is out of the chassis, do not hold it by the ejector handles, bus
bars, or edge connectors. They cannot support its weight.
Do not stack DPCs on top of one another after removal. Place each one
individually in an electrostatic bag or on its own antistatic mat on a flat, stable
surface.
11. If you are not reinstalling a DPC into the emptied DPC slot within a short time, install a blank DPC
panel over the slot to maintain proper airflow in the DPC card cage.
CAUTION:
before reinserting it, removing a DPC from a different slot, or inserting a DPC
into a different slot.
Avoid bending a fiber-optic cable beyond its minimum bend radius.
The weight of the DPC is concentrated in the back end. Be prepared
After removing a DPC from the chassis, wait at least 30 seconds
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