Dell Precision D490, Quick Reference Manual, Page: 36 / 124

36
Quick Reference Guide
blinking
green The computer is in a reduced
power or "sleep" state. Use one of the appropriate methods to "wake
up" the computer. See "Advanced Features" in
your
User’s Guide .
If the problem is not resolved and you are trying
to wake the computer with a USB mouse or
keyboard, substitute the mouse or keyboard
with a working PS/2 mouse or keyboard and
then try to wake the computer.
blinking
green The computer is in a reduced
power or "sleep" state. Use one of the appropriate methods to "wake
up" the computer. See "Advanced Features" in
your
User’s Guide .
If the problem is not resolved and you are trying
to wake the computer with a USB mouse or
keyboard, substitute the mouse or keyboard
with a working PS/2 mouse or keyboard and
then try to wake the computer.
(blinking)
amber The BIOS is not executing. Ensure that the processor is seated correctly and
restart the computer. See "Processor" in your
User’s Guide
.
If the problem is still not resolved, contact Dell
for technical assistance.
(blinking)
blinking
amber A possible power supply or
power cable failure has
occurred. Perform the procedure in "Power Problems" in
your
User’s Guide .
If the problem is still not resolved, contact Dell
for technical assistance.
(blinking)
amber A possible system board
failure has occurred. Contact Dell for technical assistance.
(blinking)
amber A processor mismatch exists. Perform the procedure in "Processor Problems"
in your
User’s Guide .
(blinking)
amber A possible failure has been
detected in a plug-in
component such as a graphics
riser card or memory riser
card. Verify that any required power cables are
connected to the memory and graphics riser
cards.
Perform the procedure in "Power Problems" in
your
User’s Guide .
Diagnostic Lights Power
Light Problem Description Suggested Resolution