I have a jura capresso impressa f7 machine and when I cleaned it (using cleaning tablet) it made some strange sounds and the screen reads "Fault 8" - I removed the tray and cannot re-insert it as the mechanism (that possibly measures the coffee ground level?) seems to have disengaged and is blocking me from reinserting the tray. What can I do to fix it?

The error 8 means the brew group has not returned to its home (start) position.

With tray removed, insert your hand under the machine. The bottom of brew group may be with coffee grounds that have been there to prevent brew group not returning to its start position. Use a small rag to clean the bottom of the brew group.

Jura does not allow manual cleaning of brew group to keep it clean & Fungus free.

Please watch videos posted on You tube channel Parts Guru USA. Videos show you how to open and manually clean the inside of machine, specially the brew group.

Sometime the used coffee scraper can get unhooked and come in the way of

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edward_bbd2c7ff4ee1828a

There is a liver on right hand side push it in and hold until it finishes process. reason why you cannot push the tray in is because you have taken it out half way trough the process.

Check to see if there is a lever that may need pushed in as you put the tray bad in...not sure as many of the machines are different...but it's worth a try! :)