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2.1.1.4 Service Keyboard Menu
)
Press in the Service Main Menu and the Keyboard Status
Menu will appear.
Here the individual keys may be tested.
2.1.1.5 Service Display Menu
)
Press followed by in the Service Main Menu and the
Display Status Menu will appear.
Here contrast setting is shown in %.
Also, it is possible to show various pictures to test the display.
For further information about operation of display see user manual
105447, section 3.12.