Troubleshooting; Enhanced Pre-Boot System Assessment (Epsa) Diagnostics; Running The Epsa Diagnostics; Lcd Built In Self Test (Bist) - Dell OptiPlex 3050 Owner's Manual

Owner's manual (49 pages)

Quick start manual (2 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.

NOTE:

Regular ePSA's run for about 5 to 10 minutes, however, the extended test takes about three and half hours with only 8GB

of ram in the system.

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.

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.

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 contact Dell.

LCD built in self test (BIST)

All-in-One (AIO) systems supports LCD BIST similar to any other Dell systems that have BIST test implemented. It allows the user to isolate

the LCD during troubleshooting to determine which sub-system is at fault. The main difference is the lack of an integrated keyboard scan

controller in the AIO. When BIST is initiated, an internal generated pattern from the LCD will be emitted for user's observation. This pattern

will go by sequence through this pattern. Black-White-Red-Green-Blue or a White-Black-Red-Green-Blue where each pattern is emitted for

2 to 3 seconds. The following images displays the pattern of the colors on the LCD.