Printing Errors or Lights & Stuck Print Jobs

I found a problem with the firmware of the Smart Tank 7305 printer. I had a case of after about half a year of printer use suddenly the printer was not printing anymore from the cyan color tank. Test pages showed clearly that this was not a problem with ink partially being blocked in the nozzles, but totally having stopped. The printer was not showing any error message though. Thus the reasonable way to proceed was to replace the color printhead. But the problem was, as the printer seemingly did not recognize an error with the printhead, it did not park the carriage in the middle automatically, thus making it impossible to open the carriage as the carriage parked in the side position would not allow access to the button to unlock the printheads to replace them. I was suspecting that there must be a way to park the carriage in the middle by pressing a button or something like that. But neither in the manual there was any hint about such a function nor was the customer service via chat able to provide any useful information. Thus the case had to be solved by replacing the printer completely as a guarantee case.

The problem seems to be clearly that there is lacking support to the customer or lacking implementation in the printer of a function to park the carriage in the middle on command instead of only by procedure (e.g. protocol on error message).