Using the ePSA and Diagnostic LED on a Latitude 7212 Rugged Extreme Tablet
Yhteenveto: ePSA and the Diagnostics indicators differ from laptops to tablets. This article provides information as they apply to the Latitude 7212 Rugged Extreme tablet.
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How to run the ePSA diagnostics suite
The Dell Enhanced Pre-Boot System Assessment (ePSA) diagnostics runs a complete suite of hardware checks on your system to assure that all the devices are in a working condition. This is built into the BIOS and works outside of the Operating system.
You can find out more about the ePSA diagnostics from the article linked below:
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Power on the Latitude tablet
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Hold down the Volume Decrease Button during the system startup until the BIOS Screen appears. Startup is when the Dell Logo screen appears but has not booted to the operating system yet.
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Power on the Latitude tablet
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Hold down the Volume Increase Button during the system startup until the Boot Menu Screen appears. Startup is when the Dell Logo screen appears but has not booted to the operating system yet.
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Use the Volume Increase Button to navigate through the Boot Menu list to Diagnostics and press the Volume Decrease Button to select the option.
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The system begins running the ePSA utility automatically from this point.
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Power on the Latitude tablet
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Tap the F12 key rapidly during the system startup until the Boot Menu Screen appears. Startup is when the Dell Logo screen appears but has not booted to the operating system yet.
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Use the Cursor keys to navigate through the Boot Menu list to Diagnostics and press the Enter key to select the option.
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The system begins running the ePSA utility automatically from this point.
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Testing Hardware using ePSA
The ePSA starts running the Quick Test automatically on all detected hardware without waiting for your input. (Except for the LCD test which looks for your response to an on-screen question.) To select a specific part to test, you can press the ESC key to cancel the Quick Test and select the Thorough Test Mode instead.
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Where to get the diagnostic LED indicators and what they mean for you
On this particular system, the diagnostic indicator is a single LED on the Power Button and it uses both the color and number of pulses of light to communicate fault codes.
This means the LED indicator consists of two groups of numbers for each color.
- The first number corresponds to the number of Amber blinks from the LED. (from 1 to 9 blinks)
- The second number corresponds to the number of White blinks from the LED. (from 1 to 9 blinks)
| LED Code | Fault Description | Suggested Steps |
|---|---|---|
| 2, 1 | CPU |
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| 2, 2 | System board: BIOS ROM Failure |
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| 2, 3 | No Memory |
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| 2, 4 | Memory Failure |
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| 2, 6 | System board: Chipset |
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| 2, 7 | LCD |
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| 3, 3 | BIOS Recovery image not found |
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| 3, 4 | BIOS Recovery image invalid |
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