Williams System 9-11 Lamp Matrix Test board Matrix Size:Large 32x32mm

Williams System 9-11 Lamp Matrix Test board Matrix Size:Large 32x32mmThis circuit board is a Williams System 9 11 Lamp Matrix Indicator, a essential diagnostic tool for pinball repair. It is designed to simulate a playfields lamp matrix using an 8x8 LED display, allowing you to quickly isolate whether a lighting issue is on the CPU driver board or within the machine's wiring harness. Product Description The Williams System 9 11 Lamp Matrix Indicator provides a clear, real time visual representation of your pinball

Each board has LED indicators with a short description in the silk screen to what it does

5mm barrel connector

Step 1: Connect your bench power supply (5V–18V DC) to the lamp matrix power input on your driver board (typically 1J4 for System 9-11)

this can be placed on the J15 header of the MPU

and Data East pinball machines

Jumpers SJ1-SJ9 will need to be closed

Data East & Sega - PPB-1 High Voltage Transistor Coil Saver - V1

Original potentiometer is worn out

These fit the interconnect between the Driver and MPU on system 1 Gottlieb

Standard board

J6- L3:  28V present

On the Row dip switch bank