游戏机比较式投币器的基本原理及维修_番星动漫

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        游戏机比较式投币器的基本原理及维修


        游戏机比较式投币器的基本原理及维修

        一般比较式投币器由比较线圈,4558运放,CPU,检测光眼,电磁铁等组成,工作原理如下:当投入硬币后,当硬币经过样币时,比较线圈感应出比较电压,送入到运放4558进行比较放大,当所投之币和样币一样大时,4558产生一个控制信号,送到CPU, CPU的工作条件一是有时钟信号。

        二是各对光眼必须正常工作,当这些条件符合时,CPU会产生一个控制信号,经过一个三极管放大后,驱动电磁铁吸合,硬币就能通过币道并经过最后一个光眼,产生信号电压。如果所投硬币不符合样币标准,则不能产生驱动电磁铁吸合,币道不通,投币失败。

        维修比较式投币器要记住几个关键点:

        一、是供电线路, 一个是外部+12V输入是否正常,二是78L08输出是否正常。

        二、三对光眼是否正常,用逻辑笔很好判断的,通电后用逻辑笔测每一个接收管的正极,然后隔断发射管与接收管之间的光路,电平应该变换,否则发射或接收一般有一损坏。

        三、比较电路是否正常只要测4558第7脚,当投币时是否有信号变化,没有就是比较部分有问题,一般是比较线圈断路或4558本身或外围有问题。

        四、电磁铁驱动电路是否正常只要在通电的情况下将驱动三极管的C. E两脚短路,如果电磁铁正常就会吸合,如不吸合就是电磁铁坏了,

        如果这四部分都正常,但还是不能投币,那一般就是CPU坏了,但这种情况很少。

        General comparison by comparing coils of coin, 4558 op-amp, CPU, detect light eyes, and other components of the electromagnet, principle of work is as follows: when put in a coin, when after YangBi COINS, compare induction coil of a voltage, comparing to op-amp 4558 amplifier, when put the COINS as big as YangBi, 4558 to produce a control signal, sent to the CPU, the working conditions of a CPU is a clock signal.

        2 it is the light eye must work normally, when these conditions in accordance with, the CPU will produce a control signal, after a triode amplifier drive electromagnet suction, can through currency and coin after the last eye, light signal voltage. Do not accord with standard of YangBi if the coin, does not produce drive electromagnet suction, currency impassability, coin failure.

        Maintenance comparison coin machine to remember a few key points:

        A, is the power supply circuit, one is an external + 12 v input is normal, the second is 78 l08 output is normal.

        Two or three light eye is normal, with logical pen good judgment, after electrify each receiving tube with logical pen test positive, then the partition, the optical path between the tube and receiving tube level should transform, otherwise transmit or receive a general damage.

        Three, comparison circuit is normal as long as 4558 feet 7, when a coin whether there is a signal change, there is something wrong with the part no is to compare, is compared commonly coil itself or the peripheral circuit or 4558 there was a problem.

        Four, electromagnet drive circuit is normal, as long as in the case of electricity will drive the triode c. E feet short circuit, if the electromagnet normal would suck, such as not smoking is electromagnet is broken.

        If the four parts is normal, but still can't pay, is the general CPU is out of order, but this is rare.

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