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InfiniScale® IV 36-Port QSFP InfiniBand Switch User Manual
5 Troubleshooting
As soon as a switch is plugged in make sure that the green power LEDs on the PSUs are on.
Status LED and or Status Health LED
If either of these two LEDs is red unplug the switch and call your Mellanox representative.
Power supply unit:
1.
If the ~AC power LED is off, check that the power cable is plugged into a working outlet. Check that
the power cable has a voltage within the range of 90 - 264 volts AC.
2.
If the LED on the PSU is not lit or is red.
3.
Remove and reinstall the power cable.
4.
If the ~AC power LED is green but the OK power LED is off or the
the PSU.
The Status green power LED for PSU1 or PSU2 does not come on:
1.
If the OK LED on the PSU is on but the system LED is off remove and reinstall the PSU. Make sure the
mating connector of the new unit is free of any dirt and/or obstacles.
2.
If the OK LED on the PSU is off, check that OK LED on the PSU Unit is on.
3.
Remove and reinstall the power cable. Check that the power outlet (in the wall) is working.
4.
Remove and reinstall the PSU. Make sure the mating connector of the new unit is free of any
dirt and/or obstacles.
5.
Replace the PSU.
The power LED for the switch shuts off:
1.
Check that the there is adequate ventilation.
2.
Make sure that there is nothing blocking the front or rear of the chassis and that the fan mod-
ules and ventilation holes are not blocked (especially dust over the holes).
3.
If you find dust blocking the holes it is recommended to clean the fan unit and remove the dust
from the front and rear panels of the switch using a vacuum cleaner.
The green power LED for the fans does not come on:
1.
Check that the Power LEDs are on.
2.
Remove and reinstall the fan unit. Make sure the mating connector of the new unit is free of
any dirt and/or obstacles. See Section 2.2.6, "Extracting and Inserting the Fan Unit," on
page 19.
The link LED for the InfiniBand connector does not come on:
1.
Check that both ends of the cable are connected.
2.
Check that the locks on the ends are secured.
Caution: Do not run the switch if the System Status LED for the Fans is Yellow!
Mellanox Technologies
LED is on – Replace
Rev 2.0.0
25
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