Troubleshooting External Connections; Troubleshooting The Video Subsystem; Troubleshooting The Keyboard - Dell PowerVault 500 Owner's Manual

Table 4-2. IRQ Assignment Defaults
IRQ Line Assignment
IRQ0 System timer
IRQ1 Keyboard controller
IRQ2 Interrupt controller 1 to enable IRQ8 through IRQ15
IRQ3 Serial port 2 (COM2 and COM4)
IRQ4 Serial port 1 (COM1 and COM3)
IRQ5 Remote access controller
IRQ6 Diskette drive controller
IRQ7 Reserved
IRQ8 Real-time clock
IRQ9 ACPI functions (used for power management)
IRQ10 Available
IRQ11 Available
IRQ12 PS/2 mouse port unless the mouse is disabled through the System Setup program
IRQ13 Math coprocessor
IRQ14 IDE CD drive controller
IRQ15 Available

Troubleshooting External Connections

Loose or improperly connected cables are the most likely source of problems for the system, monitor, and other peripherals (such as a printer, keyboard,
mouse, or other external device). Ensure that all external cables are securely attached to the external connectors on your system. See
and Indicators and Back-Panel Features and Indicators

Troubleshooting the Video Subsystem

Problem
Monitor is not working properly.
l
Video memory is faulty.
l
Action
1. Check the system and power connections to the monitor.
2. Determine whether the system has an expansion card with a video output connector.
In this system configuration, the monitor cable should normally be connected to the connector on the expansion card, not to the system's integrated
video connector.
To verify that the monitor is connected to the correct video connector, turn off the system and wait for 1 minute, then connect the monitor to the other
video connector and turn the system on again.
3. Determine whether the system has monitors attached to both the front and rear video connectors.
The system supports only one monitor attached to either the front or rear video connector. When a monitor is connected to the front panel, the back-
panel video, and PS/2 keyboard and mouse connectors are disabled.
If two monitors are attached to the system, disconnect one monitor. If the problem is not resolved, continue to the next step.
4. Run the appropriate online diagnostic test. See
If the tests run successfully, the problem is not related to video hardware.
If the tests fail, see Getting

Troubleshooting the Keyboard

for the front- and back-panel connectors on your system.
Using Server Administrator
Help.
Diagnostics.
Front-Panel Features