What are the nescessary test pattern numbers for Pot o Gold video keno machine curcuit boards and what makes the test pattern necessary?

The necessary test pattern numbers for Pot o Gold video keno machine circuit boards typically include a series of grid patterns and color tests that help verify the functionality of the display and the integrity of the graphics output. These patterns are essential for diagnosing issues with the screen, ensuring proper alignment, and confirming that the machine's visual components operate correctly. By running these test patterns, technicians can identify faults and maintain the machine's performance and reliability.