Juniper Networks M10i manual 48V

Chapter 13: Replacing Hardware Components

b.Insert the negative (–) source cable into the input terminal, which is labeled

–48V.

NOTE: The DC power supplies in slots P/S 0 and P/S 1 must be powered by dedicated power feeds derived from feed A, and the DC power supplies in slots P/S 2 and P/S 3 must be powered by dedicated power feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system. For information about connecting to DC power sources, see “Chassis Grounding” on page 177 and “DC Power, Connection, and Cable Specifications” on page 179.

9.Verify that the DC source power cabling and the grounding cabling are correct, that they are not touching or blocking access to router components, and that they do not drape where people could trip on them.

10.Turn on the DC power source so that voltage flows to the router.

11.Turn on the power to a management device that is connected to the Routing Engine (through the craft interface port labeled AUX/MODEM, CONSOLE, or MGMT). For more information on connecting management devices, see “Replacing Connectors to Routing Engine Interface Ports” on page 130.

12.Press the power switch on two power supply faceplates to the ON position. When the power supply has powered on successfully, the green OUTPUT OK LED lights steadily.

NOTE: After powering off a power supply, wait at least 60 seconds before turning it back on. After powering on a power supply, wait at least 60 seconds before turning it off.

If the router is completely powered off when you power on the power supply, the Routing Engine boots as the power supply completes its startup sequence. If the Routing Engine finishes booting and you need to power off the router again, first issue the CLI request system halt command. For more information, see “Disconnecting AC Power from the Router” on page 111 or “Disconnecting DC Power from the Router” on page 117.

After a power supply is powered on, it can take up to 60 seconds for status indicators—such as LEDs on the power supply and show chassis commands—to indicate that the power supply is functioning normally. Ignore error indicators that appear during the first 60 seconds.

13.Press the power switch for the remaining power supplies to the ON ( ) position and observe the LEDs on each power supply faceplate. They should light as described in the previous step.

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