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CAUTION: After removing a DPC from the chassis, wait at least 30 seconds before
reinserting it, removing a DPC from a different slot, or inserting a DPC into a different
slot.
Figure 49: Removing a DPC
Installing a DPC
To install a DPC (see Figure 50 on page 110):
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see “Preventing Electrostatic Discharge Damage” on page 130.
2. Place the DPC on an antistatic mat or remove it from its electrostatic bag.
3. Identify the slot on the router where it will be installed.
4. Verify that each fiber-optic transceiver is covered with a rubber safety cap. If it
does not, cover the transceiver with a safety cap.
5. Orient the DPC so that the faceplate faces you.
6. Lift the DPC into place and carefully align the sides of the DPC with the guides
inside the card cage.
7. Slide the DPC all the way into the card cage until you feel resistance.
8. Grasp both ejector handles and rotate them clockwise simultaneously until the
DPC is fully seated.
9. If the DPC uses fiber-optic cable, remove the rubber safety cap from each
transceiver and cable.
WARNING: Do not look directly into a fiber-optic transceiver or into the ends of
fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a
transceiver emit laser light that can damage your eyes.
108 ■ Replacing DPCs and Transceivers
MX240 Ethernet Services Router Hardware Guide