Dell 2520 owner manual Enhanced Pre-Boot System Assessment ePSA Diagnostics, Battery Status Lights

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Diagnostics

If you experience a problem with your computer, run the ePSA diagnostics before contacting Dell for technical assistance. The purpose of running diagnostics is to test your computer's hardware without requiring additional equipment or risking data loss. If you are unable to fix the problem yourself, service and support personnel can use the diagnostics results to help you solve the problem.

Enhanced Pre-Boot System Assessment (ePSA) Diagnostics

The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to:

•Run tests automatically or in an interactive mode

•Repeat tests

•Display or save test results

•Run thorough tests to introduce additional test options to provide extra information about the failed device(s)

•View status messages that inform you if tests are completed successfully

•View error messages that inform you of problems encountered during testing

CAUTION: Use the system diagnostics to test only your computer. Using this program with other computers may cause invalid results or error messages.

NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer terminal when the diagnostic tests are performed.

1.Power-on the computer.

2.As the computer boots, press the <F12> key as the Dell logo appears.

3.On the boot menu screen, select the Diagnostics option.

The Enhanced Pre-boot System Assessment window is displayed, listing all devices detected in the computer. The diagnostics starts running the tests on all the detected devices.

4.If you wish to run a diagnostic test on a specific device, press <Esc> and click Yes to stop the diagnostic test.

5.Select the device from the left pane and click Run Tests.

6.If there are any issues, error codes are displayed. Note the error code and contact Dell.

Battery Status Lights

If the computer is connected to an electrical outlet, the battery light operates as follows:

•Alternately blinking amber light and white light — An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop.

•Alternately blinking amber light with steady white light — Temporary battery failure with AC adapter present.

•Constantly blinking amber light — Fatal battery failure with AC adapter present.

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Contents Regulatory Model P18F Regulatory Type P18F0032 Dell Inc Contents Technical Specifications Contacting Dell Before Working Inside Your Computer Working on Your ComputerAfter Working Inside Your Computer Turning Off Your ComputerPage Page Recommended Tools Removing the BatteryRemoving the Hinge Cover Installing the BatteryInstalling the Secure Digital SD Card Removing the Secure Digital SD CardRemoving the Keyboard Installing the Hinge CoverPage Removing the Optical Drive Installing the KeyboardRemoving the Memory Module Installing the Optical DriveRemoving the Palmrest Installing the Memory ModuleInstalling the Palmrest Removing the Power-Button Board Removing the Hard Drive Installing the Power-Button BoardRemoving the Wireless Local Area Network Wlan Card Installing the Hard DriveRemoving the Coin-Cell Battery Installing the Wireless Local Area Network Wlan CardRemoving the USB Board Installing the Coin-Cell BatteryInstalling the USB Board Removing the Microphone Installing the MicrophoneRemoving the Heat-Sink Fan Assembly Removing the Processor Installing the Heat-Sink Fan AssemblyRemoving the System Board Installing the ProcessorInstalling the System Board Removing the Speakers Installing the Speakers Removing the Display Assembly Removing the Power-Connector Port and Bracket Installing the Display AssemblyPage Removing the Display Bezel Installing the Power-Connector Port and BracketRemoving the Camera Installing the Display BezelRemoving the Display Panel Installing the CameraPage Installing the Display Panel Removing the Low-Voltage Differential Signaling Lvds Cable Installing the Low-Voltage Differential Signaling Lvds Cable Page Navigation Keys Boot SequenceEnter System Setup OptionsAdvanced System and Setup Password Updating the BiosAssigning a System Password and Setup Password Page Battery Status Lights Enhanced Pre-Boot System Assessment ePSA DiagnosticsDevice Status Lights Diagnostic Beep CodesTechnical Specifications Feature Feature Vostro Type Physical Page Contacting Dell
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