Dell Precision 390: Before You Start Testing Beep Codes Code Cause

Before You Start Testing

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product

Information Guide.

• Turn on your printer if one is attached.

• Enter system setup, review your computer’s configuration information, and enable all of your

computer’s components and devices, such as connectors.

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 a beep code is emitted, write it down and look it up in the following table.

Code Cause

1-1-2 Microprocessor register failure

1-1-3 NVRAM read/write failure

1-1-4 ROM BIOS checksum failure

1-2-1 Programmable interval timer failure

1-2-2 DMA initialization failure

1-2-3 DMA page register read/write failure

1-3 Video Memory Test failure

1-3-1 through 2-4-4 Memory not being properly identified or used

1-3-2 Memory problem

3-1-1 Slave DMA register failure

3-1-2 Master DMA register failure

3-1-3 Master interrupt mask register failure

3-1-4 Slave interrupt mask register failure

3-2-2 Interrupt vector loading failure

3-2-4 Keyboard Controller Test failure

3-3-1 NVRAM power loss

3-3-2 Invalid NVRAM configuration

3-3-4 Video Memory Test failure

3-4-1 Screen initialization failure

36 Quick Reference Guide