APi 748 V1.1 406
4.2
P/N 77500001
Back
Check List
When a problem occurs, always look for the
obvious solution first. Check the following before
attempting to make any adjustment or replace any
parts.
• Check that the machine is connected to a live
power source with a good ground.
• Check that the main power switch is on.
• Check the condition of both circuit breakers on
the main power switch assembly and the two
circuit breakers on the lower center panel of the
cabinet.
• Check that all plugs are seated in their
receptacles.
• Check that connector pins are not bent, broken,
or pushed through the back of the connector
housing when mated.
• Check that wires are not broken at the connector
pins.
• Check to insure the Main Door Interlock Switch
and the Refrigeration Interlock Switch both
actuate when the Main Door is closed.
• Check all indicator LEDs for proper indications.
Indicator LEDs
Indicator LEDs are provided on the 748 Controller,
Credit Module, Refrigeration/Turret Module, and
Relay Interface board. The proper LED indication
with the 748 operating normally is listed below.
748 Controller
+5V----------------------------On Continuous
RL STATUS ----------------On Continuous
Credit Module
+5VOn ----- --------------- Continuous
RL TX ------ --------------- Fast Blinking
STATUS --- --------------- Depends on the cash
system configured, refer to Credit Module
Indicators below
Refrigeration/Turret Module
+5V----------------------------On Continuous
RL TX ------------------------Fast Blinking
BACKUP CONTROL ----On Continuous
COMPRESS----------------See Refrigeration/ Turret
Module Indicators below
Relay Interface Board
LIGHTS-----------------------On Continuous
ENERGY CONTROL----See Relay Interface
Indicators below
TURRET INTERLOCK--- On Continuous.
748 Machine Controller Indicators
The 748 machine controller board has two LED
indicators: +5 Volts and RL STATUS.
• +5 Volts - This LED will be lit continuously
indicating the +5 Volt on board power supply
circuit is working properly.
• RL STATUS - This LED indicates the status of
the Serial bus.
• On Continuous - indicates that all four Serial
devices are communicating with the 748
controller.
• Fast Flashing - indicates that there is a fault on
the Serial bus such that none of the
Serial devices can communicate.
• Slow Flashing - indicates a failure to
communicate with one or more Serial devices. A
code (the number of flashes) indicates which
device is not communicating. If more than one
device is not communicating, the LED will flash
each code for each non-communicating device.
• 1 flash - Column price displays
• 2 flashes - Message center
• 3 flashes - Refrigeration/Turret Module
• 4 flashes - Credit Module
Credit Module Indicators
The Credit module board has three LED
indicators: +5 Volts, RL Tx, and STATUS.
• +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 (very fast
flashes), it indicates that the Credit module is
communicating on the Serial bus.
• STATUS - This LED will flash (very fast flashes)
to indicate communication is taking place with
MDB peripherals or Protocol A devices if
connected and properly configured. When the
DUMB cash system is configured, the STATUS
LED will flash whenever the coin return lever is
pushed, a coin is accepted, a tube status
response, or a bill is accepted.
Summary of Contents for Showcase 748
Page 73: ...APi 748 V1 1 406 6 2 P N 77500001 Back Main Door Exterior ...
Page 75: ...APi 748 V1 1 406 6 4 P N 77500001 Back Message Center ...
Page 77: ...APi 748 V1 1 406 6 6 P N 77500001 Back Main Door Interior ...
Page 79: ...APi 748 V1 1 406 6 8 P N 77500001 Back Lower Main Door Components ...
Page 81: ...APi 748 V1 1 406 6 10 P N 77500001 Back Coin Mech Compartment ...
Page 83: ...APi 748 V1 1 406 6 12 P N 77500001 Back Door Assembly Coin Mech Compartment ...
Page 85: ...APi 748 V1 1 406 6 14 P N 77500001 Back Cabinet Final Assembly ...
Page 88: ...APi 748 V1 1 406 6 17 P N 77500001 Back This Page Intentionally Left Blank ...
Page 91: ...APi 748 V1 1 406 6 20 P N 77500001 Back Main Power Switch ...
Page 93: ...APi 748 V1 1 406 6 22 P N 77500001 Back Turret Drive Motor ...
Page 97: ...APi 748 V1 1 406 6 26 P N 77500001 Back Plate Assembly Locks Delivery Door ...
Page 99: ...APi 748 V1 1 406 6 28 P N 77500001 Back Refrigeration Unit 120 V Domestic Control Box Assem ...