GENEVA - Vending Machines

COFFEtek Ltd
ACCESSING THE USER PROGRAMS
2. The programs are accessed by pressing key 5 (PROG) on the INTERNAL keypad.
The EXTERNAL display will then prompt for input of a four-digit entry code. The code is input
using the numbers printed on the keys of the INTERNAL keypad.
(1) After pressing the PROG key the display will change to: -
PLEASE ENTER
ACCESS CODE
(2) Use the numbered keys on the INTERNAL keypad to enter the correct code. It is not
necessary to press ENTER. The code will be checked on entry of the fourth digit. Three
attempts are allowed before the PROG key must be pressed again. On entry of a valid code
the display will change to the menu heading appropriate to the level of access. Whilst in
programming mode, the functions of the external keypad change to facilitate navigation of
the program using the EXTERNAL keypad.
3. In the event that the code has been lost or when fitting an un-programmed replacement board, it is
necessary to complete the circuit between the two pins of the two pin header labelled ENG LINK
on the Control Board. This bypasses the entry of the four-digit code, giving engineer level access
immediately upon pressing the PROG key. If the ENG LINK is left in place during power up,
the machine will boot straight into the engineer’s program with full access.
NOTE REGARDING POWER UP PROBLEMS
4. The Geneva electronics control system has two major elements. These are the Control Board and
the DC RIO board. The two boards communicate via a three wire Inter Integrated Circuit bus (I 2 C
bus). Some faults affecting the I 2 C bus or Control Board configuration can result in persistent
system resets. To allow recovery / diagnosis from such situations, the control system provides an
Access Window to a special ‘safe mode’ shortly after power is switched on. It is possible to enter
engineer’s mode during this window.
Some configuration faults related to unintialised boards do not allow the system to get even this far
through start up, in which case it is necessary to insert the ENG LINK before switching the power on.
In this case the machine will boot straight into the engineer’s program.
In both cases the I 2 C bus linking the electronics boards is disabled. Without communication between
the DC RIO board and the Control board the OUTPUT TEST facility is ineffective and the state of
some inputs will be misreported in the INPUT TEST routines. As a reminder to this effect the sound
associated with a key press is truncated to a very short pip rather than a beep.
23 06/08/2008 Issue 3 GENEVA