Troubleshooting Your System
129
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 13 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
Determine whether the system has an expansion card with a video output
connector.
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
Table 4-2. IRQ Assignment Defaults
IRQ Line Assignment
Summary of Contents for PowerEdge R900
Page 1: ...Dell PowerEdge R900 Systems Hardware Owner s Manual ...
Page 10: ...10 Contents Glossary 171 ...
Page 40: ...40 About Your System ...
Page 56: ...56 Using the System Setup Program ...
Page 126: ...126 Installing System Components ...
Page 164: ...164 Jumpers and Connectors ...
Page 190: ...190 Index ...