Dell Precision 220 - Manual (Page 68)

technical assistance.
Diagnostic LEDs
The power indicator light-emitting diode (LED) and the hard-disk drive LED on the front of the computer emit diagnostic codes that can help you
troubleshoot a system problem. Table 3 lists the codes for the diagnostic LEDs, probable causes, and suggested corrective actions.
Table 3. Diagnostic LED Codes
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CAUTION: Before servicing any components inside your computer, see " Safety First —For You and Your Computer ."
Power LED Code Hard-Disk Drive
LED Code
Cause
Action
Blinking yellow Blank System power supply
failure See " Getting Help " for instructions on
obtaining technical assistance.
Blinking yellow Solid green Voltage regulator failure
on the system board. See " Getting Help " for instructions on
obtaining technical assistance.
Solid yellow N/A A device on the system
board may be faulty or
is incorrectly installed. Be sure that each microprocessor is
properly seated,
remove all expansion
cards , and then reboot. If the system does
not boot, see " Getting Help " for
instructions on obtaining technical
assistance.
Solid green and a
beep code during
POST N/A A problem was
detected while the BIOS
was executing. See Table 2 for instructions on diagnosing
the beep code.
Solid green power
indicator and no
beep code and no
video during POST N/A The monitor or the
graphics card may be
faulty. See " Troubleshooting the Monitor ." If the
monitor is operating properly and is
correctly connected, see "
Getting Help " for
instructions on obtaining technical
assistance.
Solid green power
indicator and no
beep code but the
system locks up
during POST N/A An integrated system
board device may be
faulty. See " Getting Help " for instructions on
obtaining technical assistance.