Beep Codes - Dell Precision T1600 Service Manual

Light Pattern
Diagnostic LEDs

Beep Codes

The system can emit a series of beeps during start-up if the display cannot 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.
74
Power Button LED
Problem Description Troubleshooting
Steps
connected to
the system
board.
• If there is an
error message
on the screen
identifying a
problem with a
device (such as
the floppy drive
or hard drive),
check the
device to make
sure it is
functioning
properly.
• If the operating
system is
attempting to
boot from a
device (such as
the floppy drive
or optical drive),
check system
setup to ensure
the boot
sequence is
correct for the
devices
installed on your
computer.