Dell PowerEdge SC1435 Hardware Owner's Manual - Page 68

Checking Basic Power Problems 1 If the power indicator on the system front panel or power supply does not indicate that power is available to the system, ensure that the power cable is securely connected to the power supply. 2 If the system is connected to a PDU or UPS, turn the PDU or UPS off and then on. 3 If the PDU or UPS is not receiving power, plug it into another electrical outlet. If it still is not receiving power, try another PDU or UPS. 4 Reconnect the system to the electrical outlet and turn on the system. 5 If the system still is not working properly, see "Troubleshooting the Power Supply" on page 74. Checking the Equipment This section provides troubleshooting procedures for external devices attached to the system, such as the monitor, keyboard, or mouse. Before you perform any of the procedures, see "Troubleshooting External Connections" on page 69. Troubleshooting IRQ Assignment Conflicts Most PCI devices can share an IRQ with another device, but they cannot use an IRQ simultaneously. To avoid this type of conflict, see the documentation for each PCI device for specific IRQ requirements. Table 4-2 lists the IRQ assignments. Table 4-2. IRQ Assignment Defaults IRQ Line IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ8 IRQ9 IRQ10 IRQ11 IRQ12 Assignment System timer Keyboard controller Interrupt controller 1 to enable IRQ8 through IRQ15 Available Serial port 1 (COM1 and COM3) Available Reserved Reserved Real-time clock ACPI functions (used for power management) Available Available Available 68 Troubleshooting Your System