Sony CDP-XA555ES Problem

Maybe someone has repair experience or ideas what it could be.

The problem has arisen recently. When listening to the newly purchased disc, the player stopped in the middle of the first track, naturally I decided to get the disc and see if there were defects on it. When opening the tray, the disk did not leave, but remained maximally shifted inward (working position). The disk can be removed in this position. Having de-energized the player, turning it on again, the disk drive spindle returned to its usual position when the tray was removed. After trying all the options for loading / unloading a tray with a disk \ without a disk, with a clamp \ without it, the result is as follows: the tray always leaves without problems, without any defects and slowdowns, but the spindle sometimes stays in place, sometimes leaves without problems as with regular work, sometimes, if it does not leave and wait for some time (tens of seconds), it can leave, sometimes it leaves as if with difficulty. The spindle with the disk always drives without problems in the usual mode with normal speed without jamming. After that, I listened to at least 10 discs playing without problems, disc detects without delay, tracks are looking for as usual, rewinding is also without problems. No extraneous noise was noticed during operation. The player is not dug, it is not used often.
I noticed that there are traces of grease on the tray exit mechanism, there is no disc on the spindle drive gears, I added a little silicone grease to check (although after looking more closely I came to the conclusion that no grease is used there) nothing has changed.

What else can I see, check?
Thanks!

(the text is translated automatically. Sorry for the inaccuracies.)