Coviden Force FX - Page 88

Display Board
4-16 Force FX Electrosurgical Generator C Service Manual
To read the switches, the main microcontroller asserts the desired BANK select line and
reads the state of the keyboard switch return lines KBD_D0 through KBD_D7. These lines
are read through port A of the I/O expansion port (U2) on the Control board.