I am having a check switch F6 on my TOTAN I am working on. The switch guide shows it as a UR flipper opto. which I am going to assume is the opto that controls the metal spikes that come up to save the ball drain on the right side. I see the upper opto under the plastic above and the opposing opto is underneath the mechanism itself. The system works correctly as I have played games and this mechanisms works as it should but I would like to clear this mechanism. I go to switch test and pass a ball between optos and nothing but I am not sure how else to test this opto. Any owners of techs had this issue and any guidance is appreciated

Found it- bad opto board. I am also having the vanishing magnet is broken but it all functions fine- I am on software 1.4