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Overview

Procedure

365-374-074

Issue a, April 2002

This test clarifies the correct working of the fan unit in the

™

LambdaUnite

MultiService Switch (MSS) subrack. The test should

be carried out for each installed NE.

Proceed as follows to test the correct functionality of the fan

unit:

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Control the status indication on the faceplate of the fan unit.

Result:

On the fan unit only the PWR ON LED should be lit.

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Check that

•

all fans of the unit are running

•

the air flow direction is from bottom to top.

N D

O F

T E P S

Lucent Technologies

Powering, circuit pack installation, and NE software

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