Troubleshooting A Damaged System - Dell PowerEdge R820 Owner's Manual

3. Disassemble components from the system:
– Hard drive carriers
– Hard-drive backplane
– USB memory key
– Cooling shroud/processor expansion module
– Expansion cards and expansion card risers
– Power supply(s)
– Cooling-fan assembly
– Processor(s) and heat sink(s)
– Memory modules
– Network daughter card and PCH shroud if applicable
4. Let the system dry thoroughly for at least 24 hours.
5. Reinstall the components you removed in step 3.
6. Close the system.
7. Turn on the system and attached peripherals.
If the system does not start properly, see
8. If the system starts properly, shut down the system and reinstall all of the expansion cards that you removed.
9. Run the appropriate diagnostic test.
If the tests fail, see Getting

Troubleshooting A Damaged System

CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your
warranty. Read and follow the safety instructions that came with the product.
1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system.
3. Ensure that the following components are properly installed:
– Cooling shroud/processor expansion module
– Expansion cards and Expansion-card risers
– Power supply(s)
– Cooling-fan assembly
– Processor(s) and heat sink(s)
– Memory modules
– Hard drive carriers
– Hard-drive backplane
4. Ensure that all cables are properly connected.
5. Close the system.
6. Run the appropriate diagnostic tests. See Using System Diagnostics.
If the tests fail, see Getting
Getting
Help.
Help.
Help.
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