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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 | Suggested Resolution |
| Light |
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| off | No electrical power is supplied to the | Connect the computer to an electrical outlet. Ensure that the |
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| computer. | light is on. If the power light is off, ensure that the computer is connected to a |
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| working electrical outlet and then press the power button. |
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| If the problem is still not resolved, contact Dell for technical assistance (see |
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| Contacting Dell). |
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| off | The computer is in a normal off condition; | Press the power button to turn the computer on. |
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| the computer is connected to an electrical |
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| outlet. | If the computer does not turn on, ensure that the |
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| the power light is off, ensure that the computer is connected to a working |
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| electrical outlet and then press the power button. |
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| If the problem is still not resolved, contact Dell for technical assistance (see |
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| Contacting Dell). |
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| blinking | The computer is in a reduced power or | Use one of the appropriate methods to "wake up" the computer. See Power |
| green | "sleep" state. | Management. |
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| If the problem is not resolved and you are trying to wake the computer with a |
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| USB mouse or keyboard, substitute the mouse or keyboard with a working PS/2 |
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| mouse or keyboard and then try to wake the computer. |
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| blinking | The computer is in a reduced power or | Use one of the appropriate methods to "wake up" the computer. See Power |
| green | "sleep" state. | Management. |
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| If the problem is not resolved and you are trying to wake the computer with a |
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| USB mouse or keyboard, substitute the mouse or keyboard with a working PS/2 |
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| mouse or keyboard and then try to wake the computer. |
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| amber | The BIOS is not executing. | Ensure that the processor is seated correctly and restart the computer (see |
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| Processor). |
(blinking) |
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| If the problem is still not resolved, contact Dell for technical assistance (see |
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| Contacting Dell). | |
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| blinking | A possible power supply or power cable | Perform the procedure in Power Problems. |
| amber | failure has occurred. |
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| If the problem is still not resolved, contact Dell for technical assistance (see |
(blinking) |
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| Contacting Dell). |
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| amber | A possible system board failure has | Contact Dell for technical assistance (see Contacting Dell). |
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| occurred. |
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(blinking) |
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(blinking) | amber | A processor mismatch exists. | See Troubleshooting Tips, then refer to Memory Problems and Power Problems. |
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