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