Dixie Narco DNCB 168, Parts Service Troubleshooting Manual

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SIID
HARDWARE CONFIGURATION
The hardware configuration for the SIID Controller consists of a main control board and a display board. The select
panel consists of low voltage switches. Sold-out indicators are eliminated in the SIID. The select switches interface
directly to the main controller.
The motors used on the stack continue to be 115 VAC. The vend switches and sold-out switches are low voltage. There
is only one vend switch per motor and one sold-out switch per column. The motors, vend switches, and sold-out
switches directly interface to the main controller board. Each motor is independently controlled to provide the maximum
flexibility for space to sales. The Main Controller supports up to 10 motors and 10 selections.
The Main Controller consists of one board. It consists of all the intelligence, memory, switch interfaces, stack interface
(motors, vend switches, and sold-out switches), and peripheral interfac es which include coin changers, dollar bill
validators, DEX interface and debit systems.
The DEX interface supports both an internal connection as well as an external connection. The interconnect is a 1/4"
phono jack as specified and approved by NAMA. All electrical specifications, protocols, and baud rates are identified in
the specification.
The door switch is included to determine door accesses. A service switch is located on the main controller board to
access accounting data, programming features, and access diagnostic features through the front select panel.
A real time clock (RTC) with battery backed memory is provided so memory can be maintained during power failures.
The life expectancy is 5 years shelf life and 10 years operational. The real time clock is displayed in military time (24
hour clock). The RTC is used for time stamping door closures, power outages, limited access, and selective discount
pricing.
The intelligence of the Main Controller is an Intel 80C32 microprocessor. A minimum of 128k of EPROM and 8k of RAM
(battery backed) is provided.
Early Display Boards will consist of four 7 segment LEDs to provide alpha-numeric characters. Future Display Boards
will consist of four, fourteen segment LEDs to provide clearer alph-numeric characters. Also, the exact change indicator
consists of an LED.
FEATURES
The following is a description of all the features of the SIID.
- DEX Compatible Hand-held Interface -
The vending industry (NAMA) has established an audit data protocol which is defined by DEX (Direct Exchange Of Data)
and UCS (Uniform Communications Standards). This interface is a direct connect as defined by the specification. The
SIID has provisions for an internal and external connection. The external connection provides a limited amount of
information.
The internal connection provides the full capability of DEX/UCS. These capabilities include full audit of interval and
historical data, system programming, diagnostics, and limited access.
- 10 Column Stack Compatible -
The SIID Controller is capable of driving up to 10 stack motors independently. The motors will be 110 VAC. The vend
switches and sold-out switches are low voltage, gold cross-point switches. The interface for the cam position and empty
detection is located on the controller board.
- Low Voltage Select Panel -
The select panel consists of gold cross-point switches. The interface circuitry is located on the controller board. The
controller board supports up to 10 selections.