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MX960 DC Power Supply LEDs

Each DC power supply faceplate contains three LEDs that indicate the status of the power supply (see Table 1). The power supply status is also reflected in two LEDs on the craft interface. In addition, a power supply failure triggers the red alarm LED on the craft interface.

Table 1: DC Power Supply LEDs

Label

Color

State

Description

PWR OK

Green

Off

Power supply is not functioning normally. Check the INPUT OK LED for more information.

On

Power supply is functioning normally.

BREAKER ON

Green

Off

DC power supply circuit breaker is turned off.

On

DC power supply circuit breaker is turned on.

INPUT OK

Green

Off

DC input to the PEM is not present.

On

DC input is present and is connected in correct polarity.

Yellow

On

DC input is present, but connected in reverse polarity.


Published: 2009-08-04