Troubleshooting; Enhanced Pre-Boot System Assessment - Epsa Diagnostics; Running The Epsa Diagnostics; Real Time Clock Reset - Dell Latitude 5590 Owner's Manual

Service manual (81 pages)

Quick start manual (2 pages)

Table of Contents

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.

Running the ePSA diagnostics

Power-on the computer.

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

On the boot menu screen, select the Diagnostics option.

Click the arrow key at the bottom left corner.

Diagnostics front page is displayed.

Press the arrow in the lower-right corner to go to the page listing.

The items detected are listed.

To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.

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

If there are any issues, error codes are displayed.

Note the error code and validation number and contact Dell.

Real Time Clock reset

The Real Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell Latitude and

Precision systems from select No POST/No Boot/No Power situations. You can initiate the RTC reset on the system from a power off

state only if it is connected to AC power. Press and hold the power button for 25 seconds. The system RTC reset occurs after you release

the power button.

NOTE:

If AC power is disconnected from the system during the process or the power button is held longer than 40 seconds, the

RTC reset process is aborted.