Dell OptiPlex 170L user manual download (Page 22 of 197)

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22
Quick Reference Guide
w w w . d e l l . c o m | s u p p o r t . d e l l . c o m
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:
1
Write down the beep code.
2
See "Dell Diagnostics" on page 17 to identify a more serious cause.
3
Contact Dell for technical assistance.
yellow
yellow
yellow
green
No memory modules are detected.
Reinstall all memory modules and restart the computer.
To eliminate the possibility of a faulty memory connector,
remove all memory modules, reinstall one memory
module (if the computer supports a single module), and
then restart the computer. If the computer starts
normally, move the memory module to a different
connector and restart the computer. Continue until you
have identified a faulty connector or reinstalled all
modules without error.
yellow
green
yellow
green
Memory modules are detected, but a
memory configuration or
compatibility error exists.
Ensure that no special memory module/memory
connector placement requirements exist (see "Memory"
in the online
User’s Guide
for more information).
Verify that the memory modules that you are installing
are compatible with your computer.
If the problem persists, contact Dell.
yellow
green
green
green
Another failure has occurred.
Ensure that the cables are properly connected to the
system board from all installed hard drives.
Check the computer message that appears on your
monitor screen.
If the problem persists, contact Dell.
green
green
green
green
The computer is in a normal
operating condition after POST.
• None.
Light
Pattern
Problem Description
Suggested Resolution
Sample
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