IBM System/36 - Advice Needed

This afternoon, I hauled home an IBM System/36 - PC (5364), complete with dedicated IBM PC (5150), Monitor, KB, cables and an IBM 4224 printer, but no documentation, all from my local Farmer's Insurance agent. The system is complete, including the "Farmers Master System Diskette". The components are badged "Farmers Insurance Group 5280Z". Googling indicates that these systems were fairly common. The system boots to the Service Control Menu, then continues the IPL to a IPL Sign On menu. Does anyone know the Service password or the Backup Service password for the Service Control Menu? Does anyone know another way into this system? I am an absolute neophyte on this system, so any help, warnings, war stories, etc. would be appreciated. Thank you, Martin Marshall