Before You Start Testing; Beep Codes - Dell Precision 390 Quick Reference Manual

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
1-1-2
1-1-3
1-1-4
1-2-1
1-2-2
1-2-3
1-3
1-3-1 through 2-4-4
1-3-2
3-1-1
3-1-2
3-1-3
3-1-4
3-2-2
3-2-4
3-3-1
3-3-2
3-3-4
3-4-1
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Quick Reference Guide
Cause
Microprocessor register failure
NVRAM read/write failure
ROM BIOS checksum failure
Programmable interval timer failure
DMA initialization failure
DMA page register read/write failure
Video Memory Test failure
Memory not being properly identified or used
Memory problem
Slave DMA register failure
Master DMA register failure
Master interrupt mask register failure
Slave interrupt mask register failure
Interrupt vector loading failure
Keyboard Controller Test failure
NVRAM power loss
Invalid NVRAM configuration
Video Memory Test failure
Screen initialization failure