19U QSFP SDR/DDR/QDR InfiniBand Switch Platform User’s Manual
Rev 1.7
Mellanox Technologies
47
9
TroubleShooting
As each PSU is plugged in, make sure that the green power LEDs on the PSU come on.
9.1
Power Supply Unit
Note: If the Power supplies cannot supply enough power the management module may shut
down the system.
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 100 - 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 OK power LED is off or the FAIL LED is on – Replace
the PSU.
9.2
Leaf Board
The power LED for the Leaf board is off:
1. Make sure that at least six PSUs are showing DC OK.
2. Uninstall and reinstall in the Leaf board.
3. When the Yellow LED is on, this indicates a fault in the board, uninstall and reinstall the Leaf
board.
4. If uninstalling and reinstalling the Leaf board does not work, burn the latest FW on the Leaf
board and uninstall and reinstall the Leaf board.
5. Replace the Leaf board with a new one.
Note: Should any of the boards shut down due to over temperature, follow the procedure start-
ing in Step 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.
