What happened?
In order for the printer to print well, it is necessary for it to pass a series of checks, called selftest.
In case the selftest is not successfully completed before start a print, the printer shows the message "Please complete Calibrations & Tests before using the printer".
Error name: Print preview unfinished selftest
Error code: #31801 (CORE One) #26801 (MK4S) #27801 (MK3.9S) #28801 (MK3.5S) #13801 (MK4) #21801 (MK3.9) #23801 (MK3.5) #17801 (XL) #12801 (MINI)
How to fix it?
Complete the selftest. Each component of the selftest is accessible from LCD Menu >Control >Calibrations & Tests.
In case any of the selftest components fail or is inconsistent, check our troubleshooting articles, depending on your printer model, for the failed selftest. Do not hesitate to contact our Customer Support at any time.