Rockwell Automation 20P PowerFlex DC Drive - Frame A AC CurrentTransducers for Drives w/Bus Bars - Manual (Page 11)

PowerFlex® DC Drive - Frame A AC Current Transducers for Drives with Bus Bars 11
8. Remove the six screws that secure the Pulse Transformer board (and
Switching Power Supply board) to the drive and, while lifting up
slightly on the board, slide the Pulse Transformer and Switching Power
Supply boards toward the top of the drive and out of the chassis.
Important: The cables from connectors X4 (if present) 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