System 11 lamp matrix
The System 11 lamp matrix works and is fixed the same way as on WPC, but its row and column drivers are on the CPU/driver board; use the board layout to find them.
Systems
Related tips
- System 11 lamp matrix basics
- Bench-check the System 11 CPU switch matrix circuit
- Testing lamp matrix columns with a test socket
- Testing lamp matrix rows with a test socket
- System 11 backbox boards and supplies
- System 11 coil outputs
- How the System 11 A/C bank select works
- How System 11 special solenoids work
Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer