Juniper Networks MX480 User Manual

Page 258

11.

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

12.

Switch on the dedicated customer site circuit breakers. Follow your site's procedures
for safety and ESD.

Verify that the

INPUT OK

LED on the power supply is lit green.

13.

On each of the DC power supplies, switch the DC circuit breaker to the center position
before moving it to the on (

—

) position.

NOTE:

The circuit breaker may bounce back to the off (

) position if you

move the breaker too quickly.

Observe the status LEDs on the power supply faceplate. If the power supply is correctly
installed and functioning normally, the

PWR OK

BRKR ON

, and

INPUT OK

LEDs light

green steadily.

NOTE:

If more than one power supply is being installed, turn on all power

supplies at the same time.

NOTE:

An SCB must be present for the

PWR OK

LED to go on.

Figure 121: Installing a DC Power Supply in the Router

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MX480 3D Universal Edge Router Hardware Guide