3. Ensure that all components are properly installed and free from damage.4. Run the online diagnostics.If the tests fail, see Getting Help.Troubleshooting Enclosure ComponentsThe following procedures describe how to troubleshoot the following components:• Power supply modules• Blower modules• System battery• Cooling fans• Optical drive• Storage controller card• Expansion cards• Hard drives• I/O moduleTroubleshooting A Wet EnclosureCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.1. Turn off the system and attached peripherals.2. Disconnect the power supplies from the PDU or electrical outlet.CAUTION: Wait until all of the indicators on the power supplies turn off before proceeding.3. Remove the following components from the system:a) Server modulesb) Power suppliesc) Blower modulesd) I/O modulee) Enclosure hard drivesf) Cooling shroudg) Cooling-fan assemblyh) Backplane expander boardi) Hard-drive backplanej) CMC cardsk) PCIe cagel) Expansion cardsCAUTION: Air dry and do not use towels.4. Let the system dry thoroughly for at least 24 hours.5. Reinstall the components you removed in step 3.6. Reconnect the power supplies to the PDU or electrical outlet and start up the system.If the system does not start up properly, see Getting Help.142