Dell PowerEdge 1500SC - Manual (Page 25)

The hard drive bays provide space for up to six 1-inch SCSI hard drives. These hard drives are connected to a SCSI host adapter on the system board or on an
expansion card, via the SCSI backplane board.
In a single nonredundant power supply system, the power supply will connect directly to and provide power to the system board, SCSI backplane, and internal
peripherals. In a redundant hot-pluggable power-supply system, the dual hot-pluggable power supplies connect directly to the power-supply distribution
board (PSDB) which then provides power to the system board, SCSI backplane, and internal peripherals.
For non-SCSI drives such as the diskette drive and CD drive, an interface cable connects the devices to the system board. For SCSI devices, interface cables
connect externally accessible SCSI devices and the SCSI backplane board to a SCSI host adapter either on the system board or on an expansion card. (For
more information, see "
Installing Drives .")
During an installation or troubleshooting procedure, you may be required to change a jumper. For information on the system board jumpers, see " Jumpers and
Connectors ."
Responding to a System Management Alert Message
The optional system management applications monitor critical system voltages and temperatures, the system cooling fans, and the status of the SCSI hard
drives in the system. Alert messages appear in the alert log window. For information about the alert log window and options, see your system management
software documentation.
Troubleshooting a Wet System
Problem
l Liquid spills
l Splashes
l Excessive humidity
Action
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the system covers (see " Removing the Side Covers ").
3. Remove all expansion cards installed in the system.
See " Removing an Expansion Card " in "Installing System Board Options."
4. Let the system dry thoroughly for at least 24 hours.
5. Replace the system covers, reconnect the system to the electrical outlet, and turn on the system.
If the system does not start up properly, see " Getting Help ," for instructions on obtaining technical assistance.
6. If the system starts up normally, shut down the system and reinstall all expansion cards you removed in step 3.
See " Installing an Expansion Card " in "Installing System Board Options."
7. Run the system board tests in system diagnostics to confirm that the system is working properly.
If the tests did not complete successfully, see " Getting Help ," for instructions on obtaining technical assistance.
Troubleshooting a Damaged System
Problem
l System dropped or damaged
Action
1. Check the following connections:
l Expansion-card connections to the system board
l Drive carrier connections to the SCSI backplane board
2. Ensure that all cables are properly connected and that all components are properly seated in their connectors and sockets.
3. Run the system board tests in system diagnostics.
If the tests did not complete successfully, see " Getting Help ," for instructions on obtaining technical assistance.
Troubleshooting the System Battery