iv Pathfinder Smart Heading System - Owner’s HandbookChapter 4: Fault-finding & Maintenance ......................................................25Regular checks ............................................................................ 25Fault-finding ............................................................................... 25Servicing ..................................................................................... 26EMC, servicing and safety guidelines ........................................ 26Product support ........................................................................... 26Appendix: Connecting to Autopilots .............................................................27Connecting to T150 or T400 course computers .......................... 27Installation instructions for T150/T400 ...................................... 29Calibration .................................................................................. 29Integrating with other Raymarine autopilots .............................. 30Connecting to ST4000+ or ST5000+ autopilot .......................... 30Connecting to T100 or T300 course computer ........................... 31Specifications .......................................................................................................32