Diagnostic Light Codes Before Post; Diagnostic Lights - Dell Precision Workstation 690 User Manual

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Tools to Help Solve Problems
Dell Precision™ Workstation 690 User's Guide
Diagnostic Lights
Beep Codes
Error Messages
Dell Diagnostics
Drivers
Restoring Your Operating System
Software and Hardware Incompatibilities
Diagnostic Lights
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4" on the front. The lights can be "off" or green. When the
computer starts normally, the lights flash. If the computer malfunctions, the pattern of the lights and also that of the power button help to identify the
problem. These lights also indicate sleep states.

Diagnostic Light Codes Before POST

Diagnostic Lights

Power Problem Description
Light
off No electrical power is supplied to the
computer.
off The computer is in a normal off condition;
the computer is connected to an electrical
outlet.
blinking The computer is in a reduced power or
green "sleep" state.
blinking The computer is in a reduced power or
green "sleep" state.
amber The BIOS is not executing.
(blinking)
blinking A possible power supply or power cable
amber failure has occurred.
(blinking)
amber A possible system board failure has
occurred.
(blinking)
(blinking) amber A processor mismatch exists.
Suggested Resolution
Connect the computer to an electrical outlet. Ensure that the front-panel power
light is on. If the power light is off, ensure that the computer is connected to a
working electrical outlet and then press the power button.
If the problem is still not resolved, contact Dell for technical assistance (see
Contacting Dell).
Press the power button to turn the computer on.
If the computer does not turn on, ensure that the front-panel power light is on. If
the power light is off, ensure that the computer is connected to a working
electrical outlet and then press the power button.
If the problem is still not resolved, contact Dell for technical assistance (see
Contacting Dell).
Use one of the appropriate methods to "wake up" the computer. See
Management.
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.
Use one of the appropriate methods to "wake up" the computer. See
Management.
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.
Ensure that the processor is seated correctly and restart the computer (see
Processor).
If the problem is still not resolved, contact Dell for technical assistance (see
Contacting Dell).
Perform the procedure in Power Problems.
If the problem is still not resolved, contact Dell for technical assistance (see
Contacting Dell).
Contact Dell for technical assistance (see
See Troubleshooting Tips, then refer to
Power
Power
Contacting Dell).
Memory Problems and Power Problems.