Nortel Networks 10BASE-T Manual Do Utilizador
Troubleshooting
309985-C Rev 00
4-5
Normal Power-Up Sequence
In a normal power-up sequence, the LEDs appear as follows:
1.
After power is applied to the switch, the Pwr (Power) LED turns on within 5
seconds.
seconds.
2.
The switch initiates a self-test, during which the port LEDs display various
patterns to indicate the progress of the self-test.
patterns to indicate the progress of the self-test.
3.
Upon successful completion of the self-test (within 10 seconds after power is
applied), the Status LED turns on.
applied), the Status LED turns on.
4.
The remaining port LEDs indicate their operational status, as described in
.
Advertencia:
A fin de evitar daños personales por corrientes eléctricas
peligrosas, no desmonte nunca la cubierta superior de este dispositivo. Los
componentes internos no son reparables por el usuario.
componentes internos no son reparables por el usuario.
Avvertenza:
Per evitare lesioni fisiche dovute a scariche pericolose di
corrente, non rimuovere mai il coperchio superiore del dispositivo. I
componenti interni non possono essere manipolati dall'utente.
componenti interni non possono essere manipolati dall'utente.
Table 4-2.
Corrective Actions
Symptom
Probable cause
Corrective action
All LEDs are off.
The switch is not receiving AC
power.
power.
Verify that the AC power cord is fastened securely
at both ends and that power is available at the AC
power outlet
at both ends and that power is available at the AC
power outlet
The fans are not operating or
the airflow is blocked, causing
the unit to overheat.
the airflow is blocked, causing
the unit to overheat.
Verify that there is sufficient space for adequate
airflow on both sides of the switch.
airflow on both sides of the switch.
(continued)