Dell PowerEdge R805 Hardware Owner's Manual (PDF) - Page 139

Troubleshooting External Connections, Troubleshooting the Video Subsystem

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Table 4-2. IRQ Assignment Defaults (continued) IRQ Line IRQ7 IRQ8 IRQ9 IRQ10 IRQ11 IRQ12 IRQ13 IRQ14 IRQ15 Assignment Reserved Real-time clock ACPI functions (used for power management) Available Available Reserved Math coprocessor IDE CD drive controller 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 "Front-Panel Features and Indicators" on page 14 and "Back-Panel Features and Indicators" on page 19 for the front- and back-panel connectors on your system. Troubleshooting the Video Subsystem Problem • Monitor is not working properly. • Video memory is faulty. Action 1 Check the system and power connections to the monitor. 2 Swap the monitor with another working monitor to see if this resolves the problem. Troubleshooting Your System 139

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Troubleshooting Your System
139
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 "Front-Panel
Features and Indicators" on page 14 and "Back-Panel Features and Indicators"
on page 19 for the front- and back-panel connectors on your system.
Troubleshooting the Video Subsystem
Problem
•
Monitor is not working properly.
•
Video memory is faulty.
Action
1
Check the system and power connections to the monitor.
2
Swap the monitor with another working monitor to see if this resolves the
problem.
IRQ7
Reserved
IRQ8
Real-time clock
IRQ9
ACPI functions (used for power management)
IRQ10
Available
IRQ11
Available
IRQ12
Reserved
IRQ13
Math coprocessor
IRQ14
IDE CD drive controller
IRQ15
Available
Table 4-2.
IRQ Assignment Defaults
(continued)
IRQ Line
Assignment