I have coin validator CH-923. I use it to identify 3 coins. At first operation it was working well but I wanted to reprogram it to have required number of pulses.At sampling, the first coin sampling is finished correctly but the second coin sampling doesn't stop when reaching the sampling number(20 times) it continues counting and doesn't stop.So, I can't program it now.
I think if there is a method to reset the validator to factory setting it will be useful.
Please help me.
number of programmed coin: 3
H for each : 20
f for each : 5
P : 3,6,9
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