N&W Global Vending Snakky, Installation, Use And Maintenance Manual

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© by NECTA VENDING SOLUTIONS SpA 0306 180-02
Chapter 3
MAINTENANCE
The maintenance operations described in this chapter
should be carried out with the machine energised and
therefore by qualified personnel, who are trained in the
correct use of the machine and are aware of the specific
risks of such condition.
To energize the system with the open door, simply insert
the special key into the switch on the payment system
compartment door (see Fig. 28).
Inside the machine, the only parts that stay energised
are those protected by covers and carrying a plate with
the warning “Disconnect the power before removing
the protective cover”.
Before removing such covers disconnect the machine
from the power grid.
The integrity of the machine and compliance with the
standards of the relevant systems must be checked at
least once a year by qualified personnel.
PRINTED BOARD FUNCTIONS
AND INDICATOR LAMPS
The C.P.U. (Central Processing Unit) board controls all
users set for the maximum configuration of the spiral
compartment and processes the input signals from the
keypad, the payment system and the cooling unit sensors.
The card also houses some LEDs which, during the
machine operation, give the following indications:
- Green LED (3): blinks during normal operation of the
C.P.U. board;
- Yellow LED (4): glows when 5 V DC are detected;
- Red LED (7): glows when, for any reason, the software
is reset.
CONFIGURING THE BOARD
This board is preset also for the MDB protocol.
The 4 minidips for setting the SW2 coin mechanism (see
Fig. 17) should all be set to OFF (Executive).
SOFTWARE UPDATE
The machine is fitted with a Flash EPROM which can be
electronically updated.
By means of a special program and suitable system
(Personal Computer or similar) the machine management
software can be updated without replacing the EPROM.
Warning!
When downloading the software it is advisable to discon-
nect the motor connectors from the CPU board (J1 and
J2)
Fig. 17
1 - J14 Coin mechanism power supply
2 - J15 Board power supply
3 - Green LED: run (DL2)
4 - Yellow LED: 5 V DC (DL1)
5 - J1 Connection for dispensing compartment lock
6 - J2 Spiral motor control
7 - Red LED: CPU reset (DL3)
8 - J3 Input/output
9 - J4 Not used
10 - J5 Programmer (RS232)
11 - J6 Photocells
12 - J7 Can-Bus
13 - Programming mode button
14 - J8 Validators
15 - J9 Probe
16 - J10 LCD display
17 - J11 Keypad
18 - J16 Keypad
19 - J12 MDB expansion
20 - Coin mechanism setting Minidip (SW2)
21 - J13 Expansion for BDV / EXE