Autel AutoLink AL419 Manual page 22

The Display Test function checks if the LCD display is working
normally.
1) From System Setup screen, use the UP/DOWN scroll button to
select Tool Self-test, and press the OK button.
2) Select Display Test from Tool Self-test menu and press the OK
button to start test. (Figure 3.9 )
3) Look for missing spots in the red, green, blue, black and white
LCD display.
4) When completed, press the ESC button to exit.
B. Keyboard Test
The Keyboard Test function verifies if the keys are functioning
properly.
1) Use the UP/DOWN scroll button to select Keyboard Test from
the Tool Self-test menu, and then press the OK button.
2) Press any key to start test. When you press a key, the key name
should be observed on the display. If the key name does not
show up, then the key is not functioning properly. (Figure 3.10)
Tool Self-test
Display Test
Keyboard Test
LED Test
Figure 3.9
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