D
Diagnostic Indicator Lights
✎All indicator lights are not available on all products.
Keyboard Lights
LED | Color | LED Activity | State/Message |
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Num Lock | Green | Flashing | Memory error |
Caps Lock | Green | Flashing | No video |
Scroll Lock | Green | Flashing | System board failure, prior to video |
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Chassis Indicator Lights—Desktop Computers and Workstations
LED | Color | LED Activity | State/Message |
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Power | Green | On | Computer on |
Power | Green | 1 blink/second | Normal suspend mode |
Power | Green | 1 blink/second | Suspend to RAM |
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Power | None | None | Computer off |
Power | Red | On | CPU not installed/fetching code |
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Power | Red* | 4 blinks/second | CPU thermal shutdown |
Power | Red* | Computer shuts down | CPU thermal shutdown |
Power | Red* | 2 blinks 1 second apart | CPU thermal shutdown |
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| followed by 2 second |
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| pause then repeat pattern |
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Power | Red | 1 blink/second | ROM error |
Power | Red | 1 blink/2 or more seconds | Power supply overheated |
Power and | Red | On | Riser board not seated |
hard drive |
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*Varies by model.
**Most models. Blue LED glows on Evo Workstation W8000.
| Service Reference Guide |
