Autohelm Inboard Autopilots (ST6000 and ST7000 systems) Service ...

AutohelmService Procedures Type CR Interface Box (Z085)1. DescriptionAll type CR systems are driven with a standard course computer and terminal boardwhich interfaces to a type CR interface box (Z085). The same interface box is usedfor both 12V and 24V systems and can be functionally tested by using the followingprocedure.2. Functional TestConnect + 12V to clutch (+) and battery (+). Connect 0V to clutch (-) and battery (-).Confirm with a multimeter that 12V is present across the bypass connections.Remove the +12V from clutch (+) and confirm that 0V is present across the bypassconnections.SeaTalk Service Manual 3