Juniper Networks M10i manual Replacing Power System Components, Replacing an AC Power Supply

Chapter 13: Replacing Hardware Components

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. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 140.

2.Verify that a rubber safety cap covers the SFP transceiver, installing one if necessary.

3.Orient the SFP over the port in the PIC so that the connector end will enter the slot first and the SFP connector faces the appropriate direction:

■If the PIC has ten SFP ports, the ports are arranged in two columns. The SFP connector faces to the right for ports in the left column, and to the left for ports in the right column.

■If the PIC has one or two SFP ports, the SFP connector faces to the left on platforms in which FPCs install vertically in the chassis, and faces upward on platforms in which FPCs install horizontally in the chassis.

4.Slide the SFP into the slot. If there is resistance, remove the SFP and flip it so that the connector faces the other direction.

5.Remove the rubber safety cap from the transceiver and the end of the cable, and insert the cable into the transceiver.

6.Arrange the cable in the cable management system to prevent the cable from dislodging or developing stress points. Secure the cable so that it is not supporting its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.

7.Verify that the status LEDs on the PIC faceplate indicate that the SFP is functioning correctly (there is an LED for each SFP port). For more information about the PIC LEDs, see the M10i Internet Router PIC Guide. You can also verify PIC functioning by issuing the show chassis fpc pic-statuscommand described in “Maintaining PICs and PIC Cables” on page 74.

Replacing Power System Components

For instructions on replacing power system components, see the following sections:

■Replacing an AC Power Supply on page 107

■Disconnecting and Connecting AC Power on page 110

■Replacing a DC Power Supply on page 112

■Disconnecting and Connecting DC Power on page 116

Replacing an AC Power Supply

An AC-powered router has two or more load-sharing AC power supplies. Each power supply is hot-removable and hot-insertable, as described in “Field-Replaceable Units

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