Dell PowerEdge SC 420 - Manual (Page 35)

Inside the System
In Figure 5 -2 , the system cover is opened to provide an interior view of the system.
Figure 5-2. Inside the System
The system board can accommodate one processor, five expansion cards (three 32-bit, 33-MHz PCI, one 2.5-GHz PCI-Express [x1] and one 2.5-GHz PCI-
Express [x8]), and four 400-MHz or 533-MHz DDR II SDRAM memory modules upgradable to 4 GB.
The drive bays provide space for up to two 1-inch SATA drives with the integrated SATA controller or two SCSI hard drives. The SCSI hard drives must be
connected to a controller card. They also provide space for an optical drive, an optional diskette drive, or an optional tape backup unit (TBU). Power is supplied
to the system board and internal peripherals through a single nonredundant power supply.
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 Options."
4. Let the system dry thoroughly for at least 24 hours.
5. If SCSI hard drives are installed, install the controller card. See " Installing an Expansion Card " in "Installing System Options."
6. Close the system. See " Closing the System ."
7. Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.
If the system does not start properly, see " Getting Help ."
CAUTION: See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.