I too was hoping someone who knows these with confidence was going to jump in. I can help a bit since I have one and have worked through most of these anomalies at one time or another.
Was the backup battery recently changed? The reason I ask is because you often get these error indicators when you have changed the battery and done setup but you didn't do the last step of setup.
It's on the last configuration tab and I think it's called Terminal ID you have to put 1111111111 in there.
Also, these are very sensitive to the cash box being properly (firmly) seated and the cash door must be properly closed (they have a habit of popping open just enough for it to trigger an error).
Any chance you can post a screenshot of the entire screen? If you have a problem with lines in the picture, I find taking a short video then doing a screen capture is a quick and easy way.
Chris