Dell OptiPlex 390 Owners Manual - Page 85

System Board Connectors, Controls and Lights - blinking amber light

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System Board Connectors Small Form Factor Password clear jumper RTC reset jumper Internal speaker Intruder connector Power connector one 5-pin connector one 3-pin connector one 3-pin connector one 5-pin connector one 3-pin connector one 24-pin and one 4-pin connector Controls and Lights Front of the computer: Power button light Drive activity light Diagnostic lights Back of the computer: Power supply diagnostic light Blue light - Solid blue light indicates power-on state; blinking blue light indicates sleep state of the computer. Amber light - Solid amber light when the computer does not start indicates a problem with the system board or power supply. Blinking amber light indicates a problem with the system board. Blue light - Blinking blue light indicates that the computer is reading data from or writing data to the hard drive. Four lights located on the front panel of the computer. For more information on the diagnostic lights, see the Service Manual at support.dell.com/manuals. Green light - The power supply is turned on and is functional. The power cable must be connected to the power connector (at the back 85

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System Board Connectors
Small Form Factor
one 5-pin connector
Password clear jumper
one 3-pin connector
RTC reset jumper
one 3-pin connector
Internal speaker
one 5-pin connector
Intruder connector
one 3-pin connector
Power connector
one 24-pin and one 4-pin connector
Controls and Lights
Front of the computer:
Power button light
Blue light — Solid blue light
indicates power-on state; blinking
blue light indicates sleep state of
the computer.
Amber light — Solid amber light
when the computer does not start
indicates a problem with the
system board or power supply.
Blinking amber light indicates a
problem with the system board.
Drive activity light
Blue light — Blinking blue light
indicates that the computer is
reading data from or writing data to
the hard drive.
Diagnostic lights
Four lights located on the front
panel of the computer. For more
information on the diagnostic lights,
see the Service Manual at
support.dell.com/manuals
.
Back of the computer:
Power supply diagnostic light
Green light — The power supply is
turned on and is functional. The
power cable must be connected to
the power connector (at the back
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