New ones are here, a couple available for now, more parts on the way.
Lamp matrix simulator board. These simulate the playfield lamp matrix using a toolbox friendly 8x8 LED matrix, allowing you to quickly isolate a controlled lamp problem. Compatible with Williams System 3 through to WPC-95, Data East. Limited compatibility with Sega/Stern 'Whitestar' and SAM systems. Wiring harness Included!
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Pre-assembled wiring harness Included!
Simulates the lamp matrix output in an 8x8 grid, operates either on the bench or with the main boards still mounted in the machine. This is sold as a fully assembled circuit board, and now also including pre-assembled wiring harnesses too. Select from the drop-down menu if you need for System 3-7, System 9-11, or WPC generation machines.
Bench Testing Lamp Power
If you're testing a driver board mounted in a machine, you won't need to provide any additional power to drive the LED matrix board. If testing on a bench, you'll need to supply anywhere from 5 to 18 volts DC to the lamp matrix power input connector on your driver board.
System 3-7 the lamp matrix power input is at connector 2J4.
Testing with the diagnostic board.
Simply attach the 16 pin connector onto the tester board header, and the two 8 pin connectors onto your CPU/Driver board where indicated. These are your normal lamp matrix wiring connectors that connect your controlled playfield lights to the boards.
Generally a CPU / Driver board problem will be related to a full row or full column. This means that a single bad lamp is usually not a board problem, but is a harnes problem. What you look for in a circuit board issue is that full rows and/or columns will be non functional, or they will be locked on when they should be shut off. Once you identify a faulty lamp or column, then you need to start tracing back the components on the board, which extends outside the scope of these instructions.
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