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Topics:
•
Enhanced Pre-boot System Assessment - ePSA
•
LCD Built-in Self Test - BIST
•
Tablet LED
•
Real Time Clock reset
•
Identifying the AC adapter shipped with your tablet
Enhanced Pre-boot System Assessment - ePSA
The ePSA is a diagnostic utility available on the tablet. This utility includes a series of tests for a tablet's hardware. Customers
can run these tests even if the computer lacks any media (hard drive, CD drive, etc.). If an ePSA-tested component fails, the
system displays an error code and generates a beep code.
Features:
● Graphical User Interface.
● Automatic Default Operation- runs test on all devices, allowing a user to interrupt and select any device.
● Checks the Master Boot Record for readiness to boot into a full OS environment.
● Tablet panel test.
● Video card.
● Battery test.
● Charger test.
● Primary battery.
● Multiprocessor cache test.
Running the ePSA Diagnostic Utility
NOTE:
The following steps can be used to run the ePSA diagnostic utility in DOS mode without using an external keyboard.
1. Power on the system.
2. Before the Dell Logo is displayed, immediately press the Volume Up button to get the Boot Menu.
3. Scroll down the Diagnostics and then press the Volume Down button to select.
4. The tablet will begin running the ePSA utility.
LCD Built-in Self Test - BIST
Dell laptop PCs have a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an
inherent problem with the LCD (screen) of the Dell laptop PC or with the video card (GPU) and PC settings.
When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines,
color fade etc., it is always a good practice to isolate the LCD (screen) by running the built-in self test (BIST).
1. Power on the system.
2. Before the Dell Logo is displayed, immediately press the Volume Up button to get the Boot Menu.
3. Scroll down the Diagnostics and then press the Volume Down button to select.
Troubleshooting
Troubleshooting
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