Scotsman DXN 207 Service Manual page 15

Page 14
F. ICE/WATER OPTICAL DISPENSING DEVICES
(ONLY FOR TOUCH LESS VERSION)
Located on the front of the dispensing area it
consists of the combination of an infrared
Transmitter and Receiver.
When a glass or a carafe is placed in front of the
Infrared sources, the optical device transmits a
signal to the PC Board that is equivalent to
activate the dispensing drive motor which, in turn,
put in rotation a dispensing vane that pushes the
ice towards a rectangular opening located in the
bottom of the storage bin.
Elapsed the dispensing time or after have removed
the glass/carafe, the infrared resume its original
condition switching off the dispensing drive motor.
G. CONTROL PANEL
Located in the rear side of the upper front part of
the dispensing area it is composed by one PC
Board with microprocessor and an external user
interface display panel with capacitive keys.
CONTROL PANEL PC BOARD LAYOUT
SERIAL
+ POWER
Pos. Description
1 ON-OFF Light
2 7 segment-3 digit display
3 Bin Empty Light
4 Alarm Capacitive key
5 Up Arrow Capacitive key
6 Down Arrow Capacitive key
7 Ice Dispensing
Capacitive key
8 Water Dispensing
Capacitive key
The control panel is used to operate the power
PC Board of DXN machines; the interaction with
the user takes place by means of the capacitive
keys (Dispensing Ice, Dispensing Water, Alarm,
Delay, Up & Down Arrows), while the feedback to
The PC Board of the control panel operates
the capacitive keys, LEDs, infrared sensor
and the connection with the power PC Board
of the dispenser, managing the dispensing
mode of ice and water and showing any alarm
occurred.
DISPLAY LAYOUT
Here below the layout of the display and a
resuming charts with the meaning of each item
during the standard operation of the dispenser
and when in the Menu Program.
OPTICAL DISPENSING
SENSOR - ICE
OPTICAL DISPENSING
SENSOR - WATER
DISPLAY CONNECTION
Touch version
ON
OFF
ON during the first 15" and ON during the first 15" and
when the bin is empty
Normally OFF -
ON in case of alarm
OFF
OFF
Normally ON
It blinks when unit
dispenses ICE
Normally ON
It blinks when unit
dispense WATER
the user is provided through the LEDs placed
behind each button and the 7-segment 3-digit display.
The panel also provides to manage the presence
of glass sensors (touchless version), one for the
water and one for the dispensing of the ice.
1
3
5
7
Touchless version
ON
OFF
when the bin is empty
Normally OFF -
ON in case of alarm
OFF
Used to move up in
OFF
Used to move down in
Normally OFF
It blinks when unit
dispenses ICE
Normally OFF
It blinks when unit
dispense WATER
Page 14
2
4
6
8
Menu program
ON
ON
ON
ON
ON
Menu Program
ON
Menu Program
ON
Used to confirm
(enter)
ON
Used to cancel
(ESC)