Dell Inspiron 3471 Service Manual

Also see for Inspiron 3471: Setup and specifications

Contents

TroubleshootingEnhanced Pre-Boot System Assessment (ePSA)diagnosticsThe 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 testingNOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computerterminal when the diagnostic tests are performed.Running the ePSA diagnostics1. Turn on your 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.4. Click the arrow at the bottom left corner.Diagnostics front page is displayed.5. Click the arrow in the lower-right corner to go to the page listing.The items detected are listed.6. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.7. Select the device from the left pane and click Run Tests.8. If there are any issues, error codes are displayed.Note the error code and validation number and contact Dell.DiagnosticsThe computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is workingappropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal mode.However, if the computer fails the POST, the computer emits a series of LED codes during the start-up. The system LED is integrated onthe Power button.The following table shows different light patterns and what they indicate.Table 18. DiagnosticsNumber of amber LED flashes Problem description2, 1 System board failure2, 2 System board, PSU or PSU cabling failure2, 3 System board, RAM or CPU failure2, 4 CMOS battery failure3978 Troubleshooting

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