So I haven't cut or soldered anything yet. I cut-n-pasted from flippersbe the info below. If I cut all of the resistors will my machine be set to USA 2?
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Valid combinations for country settings
The inside page of the cover of a WPC pinball machine manual has at the top an overview of the valid combinations to what you can set the cpu. Note this list in your manual is not complete - there is also a 'USA2' and 'Export' setting (see below).
Country W15 / SW5 W16 / SW6 W17 / SW7 W18 / SW8
USA ON ON ON ON
Spain OFF ON ON ON
Europe ON OFF ON ON
France ON ON OFF OFF
Germany ON ON ON OFF
USA 2 OFF OFF OFF OFF
Export OFF ON OFF ON
For all combinations the first dipswitches/jumpers are set to: SW1 and SW2 are OFF; SW3 and SW4 are ON.
Note that France is also selected when only W17 is OFF (and W18 is on) - as you would expect when you follow the combinations for Spain/Europe/Germany (each time 1 jumper off). It also works like the manual indicates with both 17 and 18 off.. the software probably stops checking when it finds W17 is off and ignores the last jumper ?
As far as I have noticed, there are no differences between USA and USA2. So when you have a WPC-89 cpu set to another country and you want to set it to USA, you do not have to solder wires in to get it to American settings.
You can just cut resistors W15 to W18 and the machine will default to USA2, which is more easy and safe to do.