Normal Power-Up Sequence; Table 60 Corrective Actions - Nortel 2000 Using Manual

332 Chapter 6 Troubleshooting

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.
2
The switch initiates a self-test, during which the port LEDs display various
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.
4
The remaining port LEDs indicate their operational status, as described in
Table

Table 60 Corrective actions

Symptom
All LEDs are off.
The Activity LED for a
connected port is off or
does not blink (and you
have reason to believe
that traffic is present).
The Status LED is off.
208700-B
60.
Probable cause
The switch is not receiving AC
power.
The fans are not operating or
the airflow is blocked, causing
the unit to overheat.
The switch is experiencing a
port connection problem.
The switch's link partner is not
autonegotiating properly.
A fatal error was detected by
the self-test.
Corrective action
Verify that the AC power cord is fastened securely
at both ends and that power is available at the AC
power outlet.
Verify that there is sufficient space for adequate
airflow on both sides of the switch.
Note:
Operating temperature for the
switch must not exceed 40°C (104°F). Do
not place the switch in areas where it can
be exposed to direct sunlight or near
warm air exhausts or heaters.
See "Port connection problems" next.
Cycle the power to the switch (disconnect and
then reconnect the AC power cord).
If the problem persists, replace the switch.