![]() There is always the hazard that the voltages will be too high and a board can be damaged. Without being certain that the voltages required are present, you cannot properly troubleshoot a pinball machine. When experiencing problems, the first step is ALWAYS to check for proper voltages. ![]() Other boards such as display, sound and Fliptronics require other voltages. ![]() There must be +5, +12 and ground present on the CPU board. Voltages RequiredĪll pinball machines require certain voltages to be present in order to work and WPC is no different. And the plug numbers on the boards are also different. Alpha Numeric machines lack DMD and Fliptronics boards, early DMD machines lack Fliptronics boards, and WPC-S is essentially the same as WPC89, with the only change in the components on the CPU board. But all WPC89 machines have a similar layout. WPC89 Fliptronics is shown in the first picture. The power transformer and a power filter box are located below, in the cabinet. More complex machines added boards under the playfield, usually for optical switches (optos) and some motors. And Fliptronics was introduced with The Addams Family. Early alpha numeric machines did not have a DMD board. The common circuity is located in the backbox as shown in the picture.
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