Systemline S6.2, Руководство по установке

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Section 4
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T
ouchscr
een Settings
4.4 Getting Out of Trouble
Both the Contrast and Touch Screen
Calibration settings potentially allow the
keypad to be configured into a state where it
can no longer be used e.g. the Configuration
Screen is itself rendered unusable by a badly
configured setting.
For example, the contrast can be set such
that the screen is unreadable and therefore
finding the controls to set it back again
is difficult. Likewise, the Touch Screen
Calibration can be set such that the buttons
can no longer be pressed, making the
Configuration Screen impossible to operate.
In the event that the Configuration Screen
can no longer be operated due to an
incorrect setting, pressing the ‘MUTE’ button
whilst on the Configuration Screen will
restore factory defaults which should allow
correct operation again.