Juniper Networks M10, M5 manual Replace Power System Components, Replace an AC Power Supply

Replace Power System Components

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.

Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.

Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

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 M5 and M10 Internet Routers PIC Guide. You can also verify PIC functioning by issuing the show chassis fpc pic-statuscommand described in “Maintain PICs and PIC Cables” on page 76.

Replace Power System Components

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

•

•

•

•

•

Replace an AC Power Supply on page 98

Disconnect and Connect AC Power on page 101

Replace an AC Power Cord on page 103

Replace a DC Power Supply on page 104

Disconnect and Connect DC Power on page 108

Replace an AC Power Supply

An AC-powered router has two load-sharing, redundant AC power supplies. Each power supply is hot-removable and hot-insertable, as described in “Field-Replaceable Units (FRUs)” on page 3. When one power supply fails or is powered down, the other power supply automatically assumes the entire electrical load for the router. For more information about AC power supplies, see “AC Power Supply” on page 17.

98M5 and M10 Internet Routers Hardware Guide