The game is telling you several areas, End of Stroke switch is probably too close together and needs to be properly set - this is on your left flipper underneath the pf, you will see arms with metal "dots" on them, these need to be calibrated a certain way - but I'm also a newbie so not sure but you can look up flipper gaps on Pinside.

Next one sounds like a drop target to spell Adventure? (I'm not familiar with this game). Again, check the switch that activates to tell the computer it has been hit, may be the same thing with alignment of leaf blades - if this is a pressure target and not a drop target.

Left ramp will have a switch on it that tells the computer the ball has traveled across that ramp. Check that, it's like a small metal arm.

Last is a set of drop targets it looks like, you need to check the coil that is beneath those banks of targets as well as the switch (maybe an opto?) that indicates target is down or needs to be reset up, etc.

There is a switch blade test that you use to manually push on the switches and make sure that they register properly, usually makes a sound and the switch number appears on the DMD screen. If nothing happens when you push the switch closed, the switch is bad and can be replaced.

-Nate

No, the errors are not a part of the idol ball grab, but they should be addressed, could short something out, and if a coil is in the same wiring matrix, could possibly be causing erratic behavior at the ball capture.

-Nate

You might have to loosen the opto board, best way of checking is to aim a video camera at the optos, you should see a slight flickering in the viewfinder coming from each one as you film them, this will tell you if they are "working" or not.

Sounds like you have to replace some optos that are bad/faulty.

-Nate