Dell PowerEdge 850 - Manual (Page 31)

The system board holds the system's control circuitry and other electronic components. The processor and memory are installed directly on the system board.
The system can accommodate up to five expansion cards.
The system supports up to four SCSI or SATA hard drives. The peripheral bays support an optional diskette drive and optical drive.
Troubleshooting a Wet System
Problem
l Liquid spilled on the system.
l Excessive humidity.
Action
1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See " Opening the System ."
3. Remove all expansion cards installed in the system. See " Removing an Expansion Card " in "Installing System Components."
4. Remove all memory modules installed in the system. See " Removing Memory Modules " in "Installing System Components."
5. Remove the processor from the system. See " Removing the Processor " in "Installing System Components."
6. Let the system dry thoroughly for at least 24 hours.
7. Replace the processor, memory modules, and expansion cards. See " Installing a Processor ," " Installing Memory Modules ," and " Installing an Expansion
Card " in "Installing System Components."
8. Close the system. See " Closing the System ."
9. Reconnect the system to the electrical outlet, and turn on the system and peripherals.
If the system does not start properly, see " Getting Help ."
10. Run the appropriate online diagnostic test. See " Using Server Administrator Diagnostics " in "Running the System Diagnostics."
If the tests fail, see " Getting Help ."
CAUTION: See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.