Beep Code; Error Messages - Dell OptiPlex 3020–Mini Tower Owner's Manual

Amber LED State Description
3,6 possible system board resource and/or hardware failure
3,7 some other failure with messages on screen

Beep Code

The computer can emit a series of beeps during start-up if the display does not show errors or
problems. These series of beeps, called beep codes, identify various problems. The delay between each
beep is 300 ms, the delay between each set of beeps is 3 sec, and the beep sound lasts 300 ms. After
each beep and each set of beeps, the BIOS should detect if the user presses the power button. If so,
BIOS will jump out from looping and execute the normal shutdown process and power system.
Code 1-3-2
Cause Memory failure
NOTE: 1. If the system is attached with an internal speaker we can hear the beep sound directly.
NOTE: 2. If the system does have an internal speaker, connect an external speaker to line out
connection to hear the beep sound.
NOTE: User can also check the power LED behavior instead of the beep code for troubleshooting
purpose.

Error Messages

Error Message Description
Address mark not The BIOS found a faulty disk sector or could not find a particular disk sector.
found
Alert! Previous The computer failed to complete the boot routine three consecutive times for the
attempts at same error. Contact Dell and report the checkpoint code (nnnn) to the support
booting this technician
system have failed
at checkpoint
[nnnn]. For help in
resolving this
problem, please
note this
checkpoint and
contact Dell
Technical Support.
Alert! Security The MFG_MODE jumper has been set and AMT Management features are disabled
override Jumper is until it is removed.
installed.
Attachment failed The floppy or hard drive controller cannot send data to the associated drive.
to respond
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