Juniper Networks M40e installation instructions Remove an FPC from an M20 Router

Replace an FPC in an M20 Router

Replace an FPC in an M20 Router		•
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On an M20 router, the FPCs are hot-insertable and hot-removable, so you can remove and		•
replace them without powering down the router. When you remove an FPC, the router		•
continues to function, but the PICs installed on the FPC do not receive or transmit data.		•
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For instructions, see the following sections:		•
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! Remove an FPC from an M20 Router on page 9		•
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! Install an FPC in an M20 Router on page 10		•
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Remove an FPC from an M20 Router		•
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The FPCs on an M20 router are located on the front of the chassis below the craft interface.		•
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Each FPC, fully configured with four PICs, weighs about 3 lbs (1.5 kg).
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To remove an FPC from an M20 router, follow this procedure:		•
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1. Place a antistatic foam mat on a flat, stable surface to receive the FPC. If a foam mat is		•
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not available, substitute a standard flat antistatic mat but use extra care when laying the
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FPC on it to avoid damaging the electrical components. If any of the PICs on the FPC use
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fiber-optic cable, also have ready a rubber safety cap for each transceiver and cable.
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2. Attach an ESD strap to your bare wrist and connect the strap to one of the ESD points on		•
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the chassis.
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3. Label the cables connected to each PIC on the FPC so that you can reconnect the cables		•
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to the correct PICs.
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4. Take the FPC offline by pressing and holding its offline button for 5 seconds or until the		•
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green OK LED next to the button goes out. The FPC offline buttons are located in a
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column at the right side of the craft interface.
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5. Disconnect the cables from the PICs on the FPC. If a PIC uses fiber-optic cable,		•
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immediately cover each transceiver and the end of each cable with a rubber safety cap.
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Carefully drape each disconnected cable over the covered metal hooks in the cable
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management system at the top of the chassis front, to prevent the cables from
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developing stress points.
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	Do not look directly into the ends of fiber-optic cables or	•
	into the transceivers on the PIC faceplate. Single-mode	•
	fiber-optic cable and the PICs that use it (such as ATM and	•
	SONET/SDH interfaces) emit laser light that can damage	•
	your eyes.	•
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	Do not leave a transceiver uncovered. The safety cap keeps	•
	the port clean and prevents accidental exposure to laser	•
	light.	•
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6. Unscrew the thumbscrews at the left and right ends of the FPC.		•
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7. Pull the ends of the extractor clips, which are adjacent to the thumbscrews, away from		•
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the face of the FPC.
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FPC Installation Instructions 9