HP Color LaserJetFlow MFP E57540

1. Touch the HP logo in the middle of the control-panel display when you see the 1/8 under the logo.
2. On the Pre-boot menu screen, use the following buttons to navigate the tests.
3. Use the down arrow button to scroll to +3 Administration, and then press the OK button to select it.
4. Use the down arrow button to scroll to +E CP Diagnostics, and then press the OK button to select it.
   NOTE: An administrator password might be required to continue.

Screen test

1. Open the control-panel system diagnostic tests.
2. With 1 Screen Test highlighted, press the OK button to select it.
3. The blue vertical gradient screen appears.
4. Touch the touchscreen to scroll though the remaining touchscreen test screens.
   NOTE: Touch the Home button to exit the test.

Touch test

1. Open the control-panel system diagnostic tests.
2. Use the down arrow button to scroll to 2 Touch Test, and then press the OK button to select it.
3. Use your finger to touch the white grid on the display.
4. A mark appears on the grid where it was touched.
   NOTE: Touch the Home button to exit the test.

SoftKey test

1. Open the control-panel system diagnostic tests.
2. Use the down arrow button to scroll to 3 SoftKey Test, and then press the OK button to select it.
3. When prompted, touch the Home button.
4. If the test is successful, the following screen appears on the display.
   NOTE: Touch the screen to exit the test.

Backlight test

1. Open the control-panel system diagnostic tests
2. Use the down arrow button to scroll to 4 Backlight Test, and then press the OK button to select it.
   After selecting the 4 Backlight Test, the screen automatically dims, and then returns to full brightness.
   NOTE: Touch any key to exit the test.

Sound test

1. Open the control-panel system diagnostic tests.
2. Use the down arrow button to scroll to 5 Sound Test, and then press the OK button to select it.
   After selecting the 5 Sound Test, the printer emits a series of audible tones.
   NOTE: Touch any key to exit the test.