Samsung SCX-6345N/XAA Service Manual page 39

System Overview
3.2.12 Finisher PBA
Descriptions
A Finisher PBA is a Finisher controlling in SCX-6345N for option. It also consists one controller(S3F443FX), two motor
drive IC and LPEC1 for expandable I/O IC to control a finisher through Uart communication with a Main controller.
Service Manual
3-14
Samsung Electronics