Maintenance; Printed Board Functions And Indicator Lights; Cpu Board - Necta StarFood Installation, Operating And Maintenance Manual

MAINTENANCE

PRINTED BOARD FUNCTIONS
AND INDICATOR LIGHTS

CPU BOARD

The C.P.U. card (Central Processing Unit) is located
inside the payment system compartment; it communi-
cates with the machine control board and processes the
input signals from the push-buttons, the payment system
and controls the display.
The card houses the "Flash EPROM" (the chips that
contain the program) and a series of minidips (see Fig. 15)
permitting the card to be configured according to the use
of the machine (see relevant chapter).
The card also houses some LEDs which, during the
machine operation, give the following indications:
- Green LED (2): blinks during normal operation of the
C.P.U. board;
- Yellow LED (3): glows when 5 VDC are detected;
- red LED (4): glows in the event of a program error;
- red LED (5): glows during the card reset.
© by NECTA VENDING SOLUTIONS SpA
Fig. 12
1 - Battery
2 - Green LED: RUN
3 - Yellow LED: 5 VDC
4 - Red LED: program error
5 - Red LED: board reset
6 - LCD contrast control trimmer
7 - LCD connector
8 - Flash EPROM: EVEN
9 - Flash EPROM: ODD
10 - Configuration Minidips
11 - Service buttons connector
12 - Price display connector
13 - Selection buttons connector
14 - Connector not used
15 - Connectors for control board communication
16 - 24 V DC power supply to board
17 - BDV connector
18 - MDB connector
19 - Coin mechanism setting Minidip
20 - Connector not used
21 - Buzzer
22 - RS232 connector to programmer
23 - Connector not used
24 - Validator connector
21
0110 171-01