Digital Networks MultiSwitch 948TXG Spécifications télécharger pdf (Page 91)

Problem Solving A-7

Problem Solving Using LEDs

Port

Activity

LEDs are

off.

There is low or no port

activity.

Ensure that the cable

has activity on it. If the

LED still fails to turn

on, the module is

defective.

Ensure that the port is present. If the

Port Activity LED still fails to turn

on, then turn the module off

momentarily by removing it from the

power supply. Check that the Port

Activity LEDs blink momentarily

during the LED power-up self-test.

Replace the module.

Symptom Probable Cause Corrective Action

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