Light Pattern

Problem Description

Suggested Resolution

 

 

 

 

Memory modules are detected, but a memory

• Ensure that no special memory

 

configuration or compatibility error exists.

module/memory connector placement

 

 

requirements exist.

 

 

• Verify that the memory modules that

 

 

you are installing are compatible with

 

 

your computer.

 

 

• If the problem persists, contact Dell. For

 

 

information on contacting Dell, see your

 

 

online User’s Guide.

 

 

 

 

A failure has occurred.

• Ensure that the cables are properly

 

 

connected to the system board from the

 

This pattern also displays when you enter system

hard drive, CD drive, and DVD drive.

 

• Check the computer message that

 

setup and may not indicate a problem.

 

appears on your monitor screen.

 

 

 

 

• If the problem persists, contact Dell. For

 

 

information on contacting Dell, see your

 

 

online User’s Guide.

 

 

 

Beep Codes

Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies a problem. One possible beep code (code 1 3-1) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer encountered a memory problem.

If your computer beeps during start-up:

1Write down the beep code.

2See "Dell Diagnostics" on page 21 to identify a more serious cause.

3Contact Dell for technical assistance. For information on contacting Dell, see your online User’s Guide.

Code

Cause

Code

Cause

 

 

 

 

1-1-2

Microprocessor register failure

3-1-4

Slave interrupt mask register failure

 

 

 

 

1-1-3

NVRAM read/write failure

3-2-2

Interrupt vector loading failure

 

 

 

 

1-1-4

ROM BIOS checksum failure

3-2-4

Keyboard Controller test failure

 

 

 

 

1-2-1

Programmable interval timer failure

3-3-1

NVRAM power loss

 

 

 

 

1-2-2

DMA initialization failure

3-3-2

Invalid NVRAM configuration

 

 

 

 

1-2-3

DMA page register read/write failure

3-3-4

Video Memory test failure

 

 

 

 

1-3

Video Memory test failure

3-4-1

Screen initialization failure

Quick Reference Guide

27

Page 27
Image 27
Dell 745c, TJ021 manual Beep Codes