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Need Help sp 540v problems

Solventinkjet

DIY Printer Fixing Guide
You need to run the limit position initialization. That should fix the issue. It's in service mode and is described in the service manual if you have one.
 

Solventinkjet

DIY Printer Fixing Guide
I mis-typed. It isn't in the service mode. You have to hold down the left, up and right arrows while powering on to do the limit position.
 
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