This is a set of diagnostic boards for testing Solenoid Driver Board Inputs & Outputs on Classic Bally/Stern Machines.
The 1st board is the "Solenoid Output Tester" and has a bargraph led on it and connectors that can attach to headers J1, J2, J5 on the SDB. No harnesses are needed, but you do need to connect +5v to the tester board.
The 2nd board is the "Driver" portion. It connects to J4 on the Solenoid Driver Board (the solenoid data inputs & solenoid select line). You need to connect +5v and GND to this board.
There are numerous ways to use these boards in and out of a machine..
One big advantage is the ability to easily test SDB "stand-alone" (ie. not connected to any other boards, just using the testers & connecting GND/+5v to everything including the SDB test points). With both tester boards connected you can simulate the solenoid signals with the "driver" tester (ie. select via DIP switch the solenoid to activate, press the momentary button to activate). This should then light up the corresponding led of the transistor being activated on the bar graph led of the "output" tester. Very useful to anyone going through a lot of SDB's that wants a quick way to verify transistors before putting the board(s) back into a machine.
There's a bunch of options for in-machine testing. With both boards connected you can do everything like you can at the bench (ie. manually trigger solenoids) but you can also watch solenoid signals being sent by the MPU too when you piggy-back the wire harness at J4 onto the "driver tester" header. The bar led's above the DIP switch will light up and correspond to the solenoid being selected. This is very helpful to identify missing signals by a quick visual check of the leds. If you have an issue where the wrong solenoids are being activated, it's a great way to isolate which signal is missing (ie. one of the bar leds above the dip switches never lights up during solenoid test) and you can isolate which wire/pin or signal on the MPU needs to be looked at to further diagnose and fix the issue. You can of course also watch the outputs on the bargraph led to identify locked-on or non-working transistors -- or if the bargraph led lights up for a solenoid that isn't working at all, then it would help identify a board versus wiring / mechanical / missing signal issue.
Other Ways To Test?
I'm positive there's some other ways to use these boards (because I've actually tested at the bench with an MPU connected.. with other test equipment I sell including the Cabinet Switch Tester & Bench LED Display) and had the MPU board drive the SDB signals via wire harness from J4 on the MPU to J4 on the SDB. So there's a good amount of ways to use these in and out of the machine to help with diagnosing solenoid related circuitry issues.
NOW AVAILABLE @ http://www.pinitech.com/products/ballystern_sdb_tester.php
**Note: Orders on these will begin shipping on 2/12 **
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