Dell Precision 490 - Manual (Page 39)

Quick Reference Guide
39
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.
Diagnostic Lights Power
Light Problem Description Suggested Resolution