Rockwell Automation 20P PowerFlex DC Drive - Frame A Bimetal Thermostat - Manual (Page 9)

PowerFlex® DC Drive - Frame A Bimetal Thermostat 9
8. Remove the six screws that secure the bottom of the Pulse Transformer
board to the drive and, while lifting up slightly on the board, slide it
toward the top of the drive and out of the chassis.
Important: The cables from connectors X4 and XTA must slide through
the openings in the board as it is lifted out of the drive
chassis. Take care not to damage these cables and
connectors.
Remove six screws
Carefully route cables through
openings as the board is removed.
Regenerative drive shown