Automatic Products Showcase 748, Operating Manual

Page: 53 / 107

APi 748 V1.1 406 4.3 P/N 77500001
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Refrigeration/Turret Module Indicators
The Refrigeration/Turret module board has four
LED indicators: +5 Volts, RL Tx, Backup Control,
and Compressor LED.
• +5 Volts - This LED will be lit continuously
indicating the +5 Volt on board power supply
circuit is working properly.
• RL Tx - When this LED is flashing it indicates
that the Refrigeration/Turret module is
communicating on the Serial bus.
• Backup Control - When this green LED is lit, the
Refrigeration/Turret module is in control of the
Refrigeration Unit. If the LED is off, control is
transferred to the Backup Thermostat on the
Refrigeration Unit.
• Compressor LED - Indicates that the compressor
is turned on.
Message Center Indicators
There are no LED indicators on the Message
Center. If the display lights up with the proper
message, the +5 V is present. The +5 Volt supply
to power the Keypad/Display board (Message
Center) is supplied by the Credit module.
Column Price Display Indicators
There are no LED indicators on the Column Price
display boards. The +24 Volt, +3 Volt, and +5 Volt
supplies to power the Column Price display
boards are supplied by the 748 controller.
Relay Interface Indicators
There are three LED indicators on the Relay
Interface board: LIGHTS, ENERGY CONTROL,
and TURRET INTERLOCK.
• LIGHTS - This LED is lit whenever the
fluorescent lamps are on.
• ENERGY CONTROL - This LED is lit when-ever
the Energy Control relay is on. When this LED is
lit, power is being supplied to the heater in the
blower assembly that blows air across the delivery
doors and the Main Door display glass. Whenever
the refrigeration compressor is running, the
Energy Control relay will drop out and this LED
will turn off.
• TURRET INTERLOCK - This LED will be lit
whenever the turret interlock relay is energized.
When energized, the turret interlock relay
connects the power supplied to the turret motor so
it can turn. The turret interlock relay will be
energized when all 11 delivery doors are fully
closed and all 11 latch levers are in the locked
position. When de-energized, power is
disconnected from the turret motor so the motor
cannot turn.
Power Up Sequence
Upon power up, the column price display will
show 11111 in the top window, 22222 in the next
window, 3s in the next, and so on. The bottom two
windows will show ‘A’s and ‘b’s respectively. The
displays will remain unchanged until the 748
Controller initializes the column price displays and
sends them a message to display something
different.
The Message Center will display the message
“748 DISPLAY Vx.xx” on power up. This message
will remain unchanged until the 748 Controller
initializes the Message Center and sends a
message to display something different.
When the 748 Controller starts up, it turns on the
fluorescent lamps in the machine and sends
Serial reset messages to all four Serial devices,
Column Price Display, Keypad/Display Module
(Message Center), Credit Module, and the
Refrigeration/Turret Module. As the power up
sequence continues, the Message Center will
display:
“AUTOMATIC PRODUCTS”,
“SHOWCASE MERCHANDISER”,
“748 VERSION x.xx”,
“ONE MOMENT”.
When the message “ONE MOMENT” appears on
the Message Center, all the price display windows
will display “-----” and the turret will start to rotate
to locate the home position. If the turret is already
at home, the coin door is open, or the Main Door
is open, the turret will not rotate. Upon reaching
the home position, the price displays will be
updated with the appropriate prices.