B13 BETTER (B13 BEST APPEARANCE) WASHING MACHINE SERVICE HANDBOOK
74
Figure 9.1 Touchkey operation principle - 1
Figure 9.2 Touchkey operation principle - 2
Picture 9.3 Electronic card (spring)
Picture 9.4 Panel rear detail
Presence of a conductor
material adds a parasitic
capacitor to the sensor
surface. Value of this capacitor
is measured.
Flat metal areas located on
springs on the cards must seat
in the housings on the panel
and should touch the bottom
surface of the panel.
Touchkey sensor surfaces are
flat metal areas located on the
springs attached to the
indicator card.
Front Panel Material
changes sensitivity
Sensor
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