15
Display test
The display has a internal function test. To execute the test press the buttons „-“ (TA13) and „manual mode“
(TA4) at the same time. Now the LCD-Display shows „Display Test“ and the version number of the operating
system. Press any button to start the first test, where all LEDs and the LCD-Display are turned on and off al-
ternately. The LCD-Display shows „LEDs on, Backlight off“.
Press any button to go to the next test. In this test all buttons are checked, by pressing all 12 buttons one after
another. The button which is to be pressed, is indicated by a lit LED. After that the rotary impulse encoders are
checked. The LCD-Display shows a cursor which can be moved by the rotary impulse encoders. At first the
cursor has to be moved to the left with the left rotary impulse encoder then to the right. After that the cursor has
to be moved to the left and right with the right rotary impulse encoder.
Then the test are completed and the LCD-Display shows „End of Tests“ and the machine goes back into normal
mode, which was displayed before the display test was executed.
