Chapter 6 Troubleshooting; Power Supply Unit; Leaf Module - Mellanox Technologies Switch-IB User Manual

6 Troubleshooting
6.1

Power Supply Unit

If the Power supplies cannot supply enough power, the management module may shut
down the some leafs.
As each PSU is plugged in, make sure that the green power LEDs on the PSU comes on.
Issue 1. If the AC power LED is off
1. Check that the power cable is the correct power cable for your country.
2. Check that the power cable is plugged into a working outlet.
3. Check that the power cable has a voltage within the range of 180-240 volts AC.
4. Remove and reinstall the power cable.
5. Check the circuit breakers to be sure that the breaker has not tripped.
6. Check that the power cable is good. Replace the power cable.
7. If the AC power LED is green but the DC power LED amber, replace the PSU.
8. Make sure the power supply is inserted.
6.2

Leaf Module

Issue 1. The power LED for the leaf module is off
1. Make sure that all of the PSUs are showing DC OK.
2. Uninstall and reinstall the Leaf module.
3. When the amber LED is on, this indicates a fault in the module, uninstall and reinstall the leaf
module.
4. If uninstalling and reinstalling the leaf module does not work, burn the latest FW on the leaf
module and uninstall and reinstall the leaf module.
5. Replace the leaf module with a new one.
Should any of the modules shut down due to over temperature, wait 5 minutes and then
follow the procedure starting with
Issue 2. The physical 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.
3. Make sure that the latest FW version is installed on both the HCA card and the switch.
4. If media adapters are used check that the all connections are good, tight, and secure.
5. Replace the cable.
Issue 3. The activity indication does not come on
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Troubleshooting
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