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Troubleshooting Your System
Dell™PowerEdge™R805SystemsHardwareOwner'sManual
Safety First—For You and Your System
Start-Up Routine
Checking the Equipment
Troubleshooting Basic I/O Functions
Troubleshooting a NIC
Troubleshooting a Wet System
Troubleshooting a Damaged System
Troubleshooting the System Battery
Troubleshooting Power Supplies
Troubleshooting System Cooling Problems
Troubleshooting System Memory
Troubleshooting an SD Card or Internal USB Key
Troubleshooting an Optical Drive
Troubleshooting an External Tape Drive
Troubleshooting a Hard Drive
Troubleshooting a SAS Controller Daughter Card
Troubleshooting Expansion Cards
Troubleshooting the Microprocessors

Safety First—For You and Your System

To perform certain procedures in this document, you must remove the system cover and work inside the system. While working inside the system, do not
attempt to service the system except as explained in this guide and elsewhere in your system documentation.

Start-Up Routine

Look and listen during the system's start-up routine for the indications described in Table4-1.
Table 4-1. Start-UpRoutineIndications

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.

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.
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as
authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not
authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
Look/listen for:
Action
A status or error message displayed on the front-panel LCD.
See LCD Status Messages.
An error message displayed on the monitor.
See System Messages.
Alert messages from the systems management software.
See the systems management software documentation.
The monitor's power indicator.
See Troubleshooting the Video Subsystem.
The keyboard indicators.
See Troubleshooting the Keyboard.
The USB diskette drive activity indicator.
See Troubleshooting a USB Device.
The USB CD drive activity indicator.
See Troubleshooting a USB Device.
The CD drive activity indicator.
See Troubleshooting an SD Card or Internal USB Key.
The hard-drive activity indicator.
See Troubleshooting a Hard Drive.
An unfamiliar constant scraping or grinding sound when you access a drive.
See Getting Help.