Dell Precision T3400: Light Pattern Problem Description Suggested Resolution

Light Pattern Problem Description Suggested Resolution: Dell Precision T3400

Table of contents

Light Pattern Problem Description Suggested Resolution

Another failure has

• Ensure that all hard drive and

occurred.

CD/DVD drive cables are properly

connected to the system board (see

"System Board Components" in your

User’s Guide

).

• If there is an error message on the

screen identifying a problem with a

device (such as the floppy drive or

hard drive), check the device to make

sure it is functioning properly.

• If the operating system is attempting

to boot from a device (such as the

floppy drive or CD/DVD drive), check

system setup (see "System Setup" in

your

User’s Guide

) to ensure the boot

sequence is correct for the devices

installed on your computer.

• If the problem persists, contact Dell

(see "Contacting Dell" in your

User’s

Guide

).

Beep Codes

Your computer may emit a series of beeps during start up. The series of beeps

is called a beep code and can be used to help identify a problem with your

computer.

If your computer emits a series of beeps during start-up:

1

Write down the beep code.

2

Run the Dell Diagnostics to identify the cause (see "Dell Diagnostics" on

page 41).

Code Cause

2 short, 1 long BIOS checksum error

1 long, 3 short, 2 short Memory error

1 short F12 key pressed

Quick Reference Guide 37