Diagnostic Light Codes During Post - Dell Precision Workstation 690 User Manual

amber A possible failure has been detected in a
plug-in component such as a graphics riser
card or memory riser card.
(blinking)
amber A possible power supply failure has
occurred.
(blinking)

Diagnostic Light Codes During POST

The power light displays a solid green for diagnostic light codes during POST.
Light Pattern Problem Description
A possible processor failure has occurred. Reinstall the processor and restart the computer (see Processor).
A possible expansion card failure has
occurred.
A possible graphics card failure has
occurred.
A possible floppy or hard drive failure has
occurred.
A possible USB failure has occurred.
No memory modules are detected.
No memory modules are detected.
System board failure has occurred.
Memory modules are detected, but a
memory configuration or compatibility
error exists.
Verify that any required power cables are connected to the memory and graphics
riser cards.
Perform the procedure in
Verify that both power supply cables are plugged in to the motherboard.
Suggested Resolution
1. Determine if a conflict exists by removing a card (not the graphics card) and then
restarting the computer. See Cards.
2. If the problem persists, reinstall the card that you removed, remove a different card,
and then restart the computer.
3. Repeat this process for each card. If the computer starts normally, troubleshoot the last
card removed from the computer for resource conflicts (see
Incompatibilities).
4. If the problem persists, contact Dell (see
1. If the computer has a graphics card, remove the card, reinstall it, and then restart the
computer. See Cards.
2. If the problem still exists, install a graphics card that you know works and restart the
computer.
3. If the problem persists or the computer has integrated graphics, contact Dell (see
Contacting Dell).
Reseat all power and data cables and restart the computer.
Reinstall all USB devices, check cable connections, and then restart the computer.
1. Reseat the memory modules to ensure that your computer is successfully
communicating with the memory (see Memory).
2. Restart the computer.
3. If the problem still exists, remove all the memory modules and install one memory
module in memory module connector DIMM_1.
4. Restart the computer.
A message appears stating that because your memory is not paired, the system will
operate with reduced performance and reduced error-correction capability
5. Press <F1> to boot to the operating system.
6. Run the Dell Diagnostics. See
7. If the memory module passes, shut down the computer (see
Computer), remove the memory module, and then repeat the process with the remaining
memory modules until a memory error occurs during start-up or diagnostic testing.
If the first memory module tested is defective, repeat the process with the remaining
modules to ensure that the remaining modules are not defective.
8. When the defective memory module is identified, contact Dell for a replacement (see
Contacting Dell).
If you have one memory module installed, reinstall it and restart the computer see
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Memory).
If you have two or more memory modules installed, remove the modules, reinstall one
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module, and then restart the computer (see Memory). If the computer starts normally,
reinstall an additional module. Continue until you have identified a faulty module or
reinstalled all modules without error.
If available, install properly working memory of the same type into your computer see
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Memory).
If the problem persists, contact Dell (see
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Contact Dell for technical assistance (see
Ensure that no special memory module/memory connector placement requirements exist
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(see Memory).
Verify that the memory modules that you are installing are compatible with your
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computer (see Memory).
Reinstall the memory modules and restart the computer (see Memory).
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Power Problems.
Software and Hardware
Contacting Dell).
Dell Diagnostics.
Turning Off Your
Contacting Dell).
Contacting Dell).