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— | fuss:arcade [2021/11/20 09:19] – office | ||
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+ | ====== Allan Universal/ | ||
+ | The Allan coin slot mechanism is an arcade coin slot mechanism that allows the device to be programmed by adding a sample coin to be matched against to the mechanism. The device will then compare inserted coins with the sample and accept or reject them depending on whether the new coin matches the sample. | ||
+ | |||
+ | {{fuss: | ||
+ | |||
+ | It may happen that the device does not accept coins anymore, in which case, the matching precision of the device can be decreased by turning the small screw at the back of the device clockwise till the device accepts the coin type. | ||
+ | |||
+ | It seems that Allan comparable coin slot mechanisms are susceptible to heat: the more an aracde cabinet stays on, the more likely that the coin slot mechanism will not accept coins anymore and will need to be adjusted for a lower sensitivity (or place frozen raw meat on the coin acceptor). | ||
+ | |||
+ | ====== Coin Acceptor Coin Signal====== | ||
+ | |||
+ | Taking as an example the JY 133A coin acceptor, the second switch marked '' | ||
+ | |||
+ | The switch on the JY 133A is a SPTR switch with three positions corresponding to: | ||
+ | * $20ms$ (fast), | ||
+ | * $50ms$ (medium), | ||
+ | * $100ms$ (slow) | ||
+ | |||
+ | the descriptions in the manual (if any) mentions some descriptions such as " | ||
+ | |||
+ | Imagine an ideal signal plotted in time: | ||
+ | < | ||
+ | v ^ T | ||
+ | | ....... | ||
+ | | . . | ||
+ | |-----+ | ||
+ | | | ||
+ | | | ||
+ | 0 +-----+------+-----+------+-----> | ||
+ | </ | ||
+ | where: | ||
+ | * $v$ is the amplitude, binary in this display with a maximum value of $1$ and a minimum value of $0$, | ||
+ | * $T$ is the period of the signal or the length, | ||
+ | |||
+ | Switch '' | ||
+ | |||
+ | {{fuss: | ||
+ | |||
+ | Inserting a coin should show the '' | ||
+ | |||
+ | In other words, if some games do not seem to accept a coin even though the coin acceptor does not display an error, the switch '' |