Festool CSC SYS 50 Table Saw - Error While Calibrating

I have been lugging my SYS 50 around all over the place storing it vertically mostly, and touch wood no issues so far. It did play up one time and I though here we go, turned out to be a sliver of timber in the wrong place.
 
Thanks for posting these ideas. I unboxed my new CSC SYS 50 today and ran into problems with the initial calibration failing (reference drive cancelled). I got the app to pair and the firmware was already up to date. I looked in the panel under the slider, and the service panel under the folding table but I didn’t see anything obviously in the way. But I’ll turn it over and try taking off the bottom panel. I saw the manual also has the end stops circled in 13.6 Cleaning the End Stops starting on page 28 which might help narrow down what to look for.

Does anyone know the order it tests the stops in the calibration? Mine seems to fully retract, then fully extend and fully bevel the blade, then seems to get to a point where the blade is partway extended and seems to be checking the negative bevel stop when it fails. The app says it’s at 30mm and -11.6°. I’m not sure if that helps to focus on what might be happening with particular stops.
 
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Somewhere in the process of flipping the saw to various orientations to check the end stops, and retrying the reference drive calibration, a small and crushed O-ring fell out of the service door the third or fourth time I opened it. After that, the saw completed the initial reference drive calibration! It’s time to make some sawdust.

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Hi,
I went to use my saw yesterday. I don't know why, but it decided to calibrate. Which it cannot complete and always leads to an error. I connected my phone to the app and there was an update - but I think it was just for the battery. I took the saw apaert and cleaned it and still no joy. Now I have to ship it to Festool. Are there no local repair stations in Los Angeles? The saw is big and heavy to ship.
Why would the saw, which was working perfectly decide that it needed to calibrate? Is there a reset button?
any tips will be greatly appreciated.

Did Festool fix it?

What was the problem and solution?
 
Somewhere in the process of flipping the saw to various orientations to check the end stops, and retrying the reference drive calibration, a small and crushed O-ring fell out of the service door the third or fourth time I opened it. After that, the saw completed the initial reference drive calibration! It’s time to make some sawdust.

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l contacted Festool service and they recommended that I send the saw in for service or exchange. The O-ring was likely supposed to seal something and the saw should have completed the initial reference drive calibration without assistance. It’s not clear what the long term impact of running this saw might be, and I didn’t want to take a chance on something going wrong later.
 
I sent my saw to Festool. Since it was still under warranty they sent me a UPS shipping lable. They recieved the saw Dec 16, 2025. I've been wondering when it would get fixed so I shot them an email last week.
They finially replied. It was shipped to me December 18th, yeah fast service. Unfortunalty UPS lost it. I didn't get it and didn't even know they shipped it until this morning.
Looks like I lost it entirely. UPS never pay losses, they just ignore you until you give up. Been there a few times.
Too bad, the saw was great and fit my needs perfectly. I'm going to have to use my 10" Dewalt, even though its way over sized for cutting the thin aircraft ply that I work with.
 
Looks like I lost it entirely.

Gosh, that’s terrible!

Festool USA covered the stolen CT 15 that UPS did not deliver to my house.

They reimbursed me.

Send an email to Festool USA. I hope they will do the same for you.

By the way, what cool things do you make with the thin aircraft ply?
 
I love to build RC turbine jets. Its the whole reason I bought the saw. I was using a track saw to cut sheets of plywood. The pieces I start with are 12 x12 or 24 x12. So, you can imagine how oversized a track is for this work (but it does a great job).
To be clear, the lost saw is no means Festool's fault. Their tools are wonderful - but I would not replace this saw in kind, because having the digital interface makes little sense and is highly probmatic for me. I should have bought the Brynes saw before the maker died.
 
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