ContentsContents11.1 Periodically Replaced Parts .......................................................................................................................................11-111.1.1 Overview.................................................................................................................................................................................. 11-111.1.2 Reader Unit .............................................................................................................................................................................. 11-111.1.3 Printer Unit............................................................................................................................................................................... 11-111.2 Durables and Consumables ........................................................................................................................................11-111.2.1 Overview.................................................................................................................................................................................. 11-111.2.2 Reader Unit .............................................................................................................................................................................. 11-111.2.3 Printer Unit............................................................................................................................................................................... 11-111.3 Scheduled Servicing Basic Procedure........................................................................................................................11-211.3.1 Scheduled Servicing................................................................................................................................................................. 11-2