Introduction
Enter the diagnostic mode to test all the buttons and cells of the braille refreshable display.
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If on, power off the unit by holding the side power button for 3 seconds.
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Enter the diagnostic mode by holding power button and the two left most cursor keys for 3 seconds.
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Press and hold down the cursor key above each cell to raise the pins/dots for that cell.
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When you release the cursor key the pins should all drop.
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Note: Multiple cursor keys can not be pressed.
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Press a key for the display to show a short code for that key.
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The button pressed will remain on the display after the key is released. Press any cursor key to clear the display.
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Multiple keys can be pressed together and this will be shown on the display.
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Power off the display (hold the power button for 3 seconds) to return to normal operation.
