SOURCE: Tray empty message
If the machine says TRAY MISSING it's the contacts at the back so clean as other people have stated, you can also use a cardboard nail file to clean the contacts at the back if there really skanky!.
If the machine keeps saying EMPTY GROUNDS even though you have, pull out the tray, look just inside the aparture where the tray goes top right at the front there is a small slot where if you look closely you can see a small white micro switch. This will be probably gunged up with coffee and the switch will be stuck up, get a can of WD40 and squirt a small amount up into the switch then poke the switch with a small screwdriver up and down until it moves smoothly.
Then replace all the bits, sit down, look smug and have a coffee cos you've fixed it!! :0)
SOURCE: Jura Impressa F50 - tray - fault 8
Hi, if you havn't already solved this one, it has been caused by pulling the drip tray/ dump box out while the brew unit was still active. Switch off the machine and insert the drip tray without the dump box. Turn the machine back on and the brew unit should re align itself.
SOURCE: I was going through the decalcifying process and
I had the same problem and had success with cleaning the contacts in the back of the machine with a small nail file/emery board. I found that the contacts that are inside the machine had a little calisification on them. Once they were cleaned up no problem.
SOURCE: I have a Jura Capresso Impressa S9 and it keeps
Where the contacts attach to the drip tray on the inside is where I had some coffee ground "sludge". It was making a weak electrical connection between the two contacts. As soon as I took a fine scrubber sponge to get rid of the build up - the Empty Tray message went away when I put the tray back in.
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