Touch Screen Assembly - Bunn Fast Cup Series Service & Repair Manual

UPPER DOOR COVER

Touch Screen Assembly

Purpose: The Touch Screen assembly is comprised
of a user interface touch screen display and circuit
board. The user interface touch screen continuously
monitors the events of inputs from devices which
results in operation of the I/O board and/or Power
board to activate the load components.
TEST INSTRUCTION
Enter Service Technician Mode and Select
Service icon
Step 1: Select and enter the Touch Screen tab.
Step 2: Pressing the "Start" button will display
an all red screen with an Exit button.
Step 3: The screen starts out red and as areas are
touched, the color should change from
red to white when pressed. If the area is
tapped, it will turn from red to white and
then to green.
Note: The hopper giving the trouble, look
for the magnet on the underside of the
hopper, must be present and be clean for
the magnetism to operate a switch that is
mounted in the top cover directly under the
hopper magnet when the hopper is in
position.
Step 4: As an area is pressed, a count is increment-
ed. This helps simulate a "press and hold".
Step 5: This screen is just to verify operation, no
changes that can be made.
SERVICE
1
30
2
3
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