H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 65)

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Troubleshooting the switch interface board
Table 28 Description of LEDs on the switch interface board
LED Status Meaning
Off The board is out of position. RUN
(Green)
Blinking The board is operating properly.
Off The board is out of position.
SLOT0
ALM
(Red)
Steady on The board is faulty.
• If the ALM LED of the board stays solid on for a long time, the board is in an abnormal condition.
The ALM LED lights up during board reset, and should go off after the board is normally started.
• If the ALM LED does not light up when the board is reset, possibly there is no power supply to the
board, which means the board is not properly in place.
Call stack information displayed after power-on
A possible cause is loose contact of the CF card, which is likely to occur during transportation. If the
console terminal keeps displaying the Call Stack information, power off the access controller and check
the CF card condition.