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Overview

Procedure 1

7 - 2

The procedures described below should be performed if the subrack

powering procedure was unsuccessful.

Procedure 1 should be used if the measured voltage at the termination

blocks of the PDP does not lie between -40.5 and -72 V.

Procedure 2 should be used if the PWR ON LEDs do not light up on

the user panels.

Procedure 3 should be used if the PWR ON LEDs do not light up on

the fan units.

Follow the steps below if the measured voltage at the termination

blocks of the PDP does not lie between -40.5 and -72 V:

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Switch off the external battery.

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Replace all affected power supply lines between the external battery

and the termination blocks of the PDP. Make sure the cables are tight

afterwards.

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Switch on the external battery.

IF ...

the measured voltage does

not lie between -40.5 and

-72 V,

the measured voltage lies

between -40.5 and -72 V,

N D

O F

T E P S

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Lucent Technologies