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Where the boards sit in a 6803 backbox

In a typical 6803 backbox the sound board is upper left, the 6803 Control Board upper right and the power supply lower right. On Atlantis the System 11 sound board and its interface board are upper left, the 50 volt flipper supply upper right, the CPU board lower left and the Bally power supply lower right.

Systems

Related tips

Source: Repairing Bally 6803 Pinball Games from 1985 to 1989, Clay Harrell (pinrepair.com)