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7.
Plug a new power module of the same model into the same slot, and connect it to the same power
input end. If the new power module can operate correctly, the old power module fails. Contact the
agents to replace the old power module.
Fan failure
Both the MPU and the fan tray provide the fan tray LEDs, including an OK LED and a FAIL LED. When the
fan tray is operating correctly, the OK LED is on, and the FAIL LED is off.
When the OK LED is off or the FAIL LED is on, the fan tray fails.
To troubleshoot the fan tray:
1.
If both LEDs are off, verify that the power module is operating correctly. For more information, see
"Power supply system
2.
Verify that the air intakes and exhaust vents of the chassis are not blocked. If they are blocked,
clean them to keep the air flow smooth. If you install air filters, remove the air filters, clean them,
and install them again.
3.
Verify that the fan tray is fully seated. You can unplug the fan tray, plug it again, and then fix the
screws.
4.
Verify that the empty LPU slots and power module slots are installed with filler panels. If not, install
filler panels for them to guarantee good ventilation.
5.
If the failure persists, contact the local agents or technical support engineers.
MPU failure
The status LEDs on the MPU show the status of a card in the corresponding slot. According to the slot
number of an MPU, you can examine the corresponding LEDs for the MPU.
When the MPU is operating correctly, the RUN LED flashes, and the ALM LED is off. When the RUN LED
is off, the MPU fails.
To troubleshoot the MPU:
1.
Verify that the power module is operating correctly. For more information, see
system
2.
Verify that the MPU is fully seated. You can unplug the MPU, plug it again, and make sure the MPU
is fully seated.
3.
Press the RESET button of the MPU to reset the MPU. After the MPU is reset, verify that the
corresponding RUN LED is on.
4.
Verify that the MPU is fully seated. You can unplug the MPU, plug it again, and make sure the MPU
is fully seated.
5.
If the failure persists, contact the local agents or technical support engineers.
LPU and switching fabric module failure
The status LEDs on the MPU show the status of a card in the corresponding slot. According to the slot
number of an LPU or switching fabric module, you can examine the corresponding LEDs for the LPU or
switching fabric module.
failure."
failure."
45
"Power supply
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Table of Contents
Troubleshooting
