What the WPC dot matrix controller does

The dot matrix controller drives the 32 x 128 display and makes all its power except +5 V and +12 V, which come from the power driver board. Its RAM holds 16 full screen images, and the CPU picks which one is shown.

Systems

• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• Dot matrix display supply voltages
• Rebuilding the dot matrix high voltage section
• Dot matrix display blank or faulty
• Flickering dots after repairing an older REV 6 DMD controller
• Dot matrix display power connector pinout and voltages
• One or two display columns stuck on
• Resets caused by a failing dot matrix display
• Dot matrix display faults

Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer