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3. Tests and Diagnostics
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pressed, the corresponding key on the screen changes to black as shown below.
It will indicate whether the sub test is passed or failed after the question.
US Keyboard
Japan keyboard
NOTE: The “Fn” key cannot be tested in the keyboard test.
To determine whether the “Fn” key is working correctly, press “Fn+F6 ” or “Fn+F7
” keys to check if LCD display brightness change gradually.