
55
Built-in service program
The machine has a built-in service program to
facilitate function checking and fault-finding.
This program may only be used by train-
ed and authorized service personnel.
To switch on service mode
•
Remove the machine top and the cover for
the program unit circuit board.
•
Press the service switch. This switch is on the
left-hand edge of the circuit board when
viewed from the machine front. The display
will now show SE, which means that the
service program is activated.
Controls in service mode
Now some of the buttons switch to being
number keys (1 to 9). The start button becomes
an ON/OFF key. The various machine functions
can be tested using numerical codes (see table
on next page).
The LEDs to the left of the display show which
input signals to the program control unit are
active.
To switch off service mode
Press the service switch again, or switch off the
machine power supply.
Service button
3400
3385
3429
Fig
81
Fig
82
Fig
83
Fig
81
83
Service program
82
81
A
1
1
4
3
2
6
5
8
7
9
Key switch for price = zero
Coin slot 1
Coin slot 2
Price programming button
Switch in door lock
Door status switch
Remote start, e.g. by external
timer