Dell Latitude 5491 Service Manual

Also see for Inspiron 5491: Service manual Setup and specifications guide Setup and specifications Setup and specifications guide Installation guide

Contents

Dell Latitude 5491 Service Manual Manual pdf 63 page image

TroubleshootingEnhanced Pre-Boot System Assessment — ePSAdiagnosticsThe ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with theBIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or devicegroups 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 testingCAUTION: Use the system diagnostics to test only your computer. Using this program with other computers may cause invalidresults or error messages.NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer terminalwhen the diagnostic tests are performed.Running the ePSA Diagnostics1 Invoke diagnostics boot by either of the methods suggested above2 Once on one time boot menu use up/down arrow key to navigate to ePSA or diagnostics and press key to launchFn+PWR will flash diagnostics boot selected on screen and launch ePSA/diagnostics directly.3 On the boot menu screen, select the Diagnostics option.4 Press the arrow in the lower-right corner to go to the page listing.The items detected are listed and will be tested5 If there are any issues, error codes are displayed.Note the error code and validation number and contact Dell.To run a diagnostic test on a specific device1 Press Esc and click Yes to stop the diagnostic test.2 Select the device from the left pane and click Run Tests.3 If there are any issues, error codes are displayed.Note the error code and validation number and contact Dell.Real Time Clock resetThe Real Time Clock (RTC) reset function allows you to recover your Dell system from No POST/No Boot/No Power situations. To initiatethe RTC reset on the system make sure system is in a power-off state and is connected to power source . Press and hold the power buttonfor 25 seconds and then release the power button.4Troubleshooting 63

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