Autel Autolink AL619 - Manual (Page 17)

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3) Press the OK button to save your selection and return to
previous menu. Or, press the ESC button to exit without saving.
Key Test
The Key Test function checks if the keyboard is working properly.
1) From System Setup screen, use the UP/DOWN scroll button
and LEFT/RIGHT scroll button to select Key Test, and press
the OK button.
2) Press any key to start test. When you press a key, the edge around
corresponding key on the screen should turn to red. Otherwise,
the key is not functioning properly. (Figure 3.6)
Figure 3.6
3) Double press ESC to return to previous menu.
LCD Test
The LCD Test function checks if the LCD display is working
normally.
1) From System Setup screen, use the UP/DOWN scroll button
and LEFT/RIGHT scroll button to select LCD Test, and press
the OK button.
2) Look for missing spots in the red, green, blue, black and white
LCD display.