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2. Remove the main logic board. (See
Main Logic
Board
.)
3. Remove four 1/4-in. hex-head screws that
attach the glass to the frame.
4. Lift the glass from the frame.
Capacitive Touch Glass
A capacitive touch switch consists of two conductive
layers on opposite sides of an insulating material,
such as glass.
The 2 conductive layers create a capacitance that
decreases when a layer is touched by a human
fi nger.
Interface circuitry is used on a touch switch to
convert the capacitance change into a usable
switching action to drive logic systems or to switch
analog signals.
To remove the capacitive touch glass:
Place the control panel in the service position.
1.
(See
Control Panel
.)
Main Logic Board
The main logic board is located inside the control
panel. The left- and right-side ribbon connectors
are replaceable components. The middle ribbon
connector is part of the capacitive touch glass.
To remove the main logic board:
Place the control panel in the service position.
1.
(See
Control Panel
.)
Mark and disconnect the 2 wire harnesses,
2.
mode/select plug and 3 ribbon connectors.
Remove the two 1/4-in. hex-head screws that
attach the board to the metal frame.
Note: Make sure to transfer the model select plug to
the new board before applying power.
Disconnect
Disconnect
Disconnect
Disconnect
Disconnect
