Troubleshooting guide

2. Troubleshooting Switch Failures
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2.1 Troubleshooting faults for AX6700S, AX6600S, and AX6300S series
switches
2.1.1 Procedure for handling switch faults
Use the procedure described below if a failure occurs on a Switch.
Table 2-1: Troubleshooting Switch failures
No. Problem Action
1 • Smoke emanates from the switch.
• An abnormal odor emanates from the
switch.
• An abnormal sound emanates from the
switch.
Immediately take the following actions:
1. Turn off the switch.
2. When a cable latch is used to fix the power cable in
position, remove the cable latch from the cable.
3. If you are using an AC power supply unit, remove the
power cable.
4. If you are using a DC power supply unit, turn off the circuit
breaker at the distribution board.
After performing the above procedure to stop operation of the
switch, contact your distributor.
2 The login prompt does not appear. 1. If a memory card has been inserted, remove the card, and
turn the switch off and then on again to restart the switch.
2. If a memory card has not been inserted, turn the switch off
and then on again to restart the switch.
3. If restarting the switch does not solve the problem, replace
the BCU, CSU, or MSU.
3 The LEDs of the BCU, CSU, or MSU are all
off.
1. Check the power supply unit LEDs and take the following
actions:
(1) If the ALARM LED of any power supply unit is lit in
red, replace the power supply unit.
(2) If both the POWER LED and ALARM LED of any
power supply unit are off, follow the procedure shown in
Table 2-2: Points to be checked in case of power failures.
If the problem persists, replace the power supply unit
whose LEDs are off.
2. If the power supply unit is operating properly without any
problems, replace the BCU, CSU, or MSU.
4 The SYSTEM1 LED of the BCU, CSU, or
MSU is lit in red or orange.
1. If an error message is displayed on the system operation
panel, take appropriate action for the relevant error
message as described in the manual Message and Log
Reference to troubleshoot the failure.
2. If no error message is displayed, replace the board (BCU,
BSU, CSU, MSU, or NIF) whose STATUS LED is lit in
red.
5 An error message is displayed on the system
operation panel.
Take appropriate action for the relevant error message as
described in the manual Message and Log Reference to
troubleshoot the failure.