Power problems can be difficult to solve. For example, a short circuit can exist anywhere on any of the power distribution buses. Usually, a short circuit will cause the power subsystem to shut down because of an overcurrent condition.
Complete the following steps to diagnose and resolve a suspected power problem.
- Check the event log and resolve any errors related to the power.
Start with the event log of the application that is managing the server. For more information about event logs, see
Event logs - Check the power backplane LED to make sure it is lit (see Power backplane connectors). If not, press the switch to turn it on.
- Check for short circuits, for example, if a loose screw is causing a short circuit on a circuit board.
- Remove the adapters and disconnect the cables and power cords to all internal and external devices until the server is at the minimum configuration that is required for the server to start. See Specifications to determine the minimum configuration for your server.
- Reconnect all ac power cords and turn on the server. If the server starts successfully, reseat the adapters and devices one at a time until the problem is isolated.
If the server does not start from the minimum configuration, see Power supply LEDs to replace the components in the minimum configuration one at a time until the problem is isolated.