Autel Autolink AL609 - Manual (Page 18)

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Figure 3.5
3) Press the OK button to save your selection and return to the
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) On 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
the corresponding key on the screen will turn red; otherwise, the
key is not functioning properly.
Figure 3.6
3) Double press the ESC button to return to the previous menu.