Self checking after you have put disc in, keeps self checking over and over, you have to eject it to get back to normal.

Question edited for clarity and typos.

The first thing with CD Ejection issues is to try a CD Cleaning Disc. It has brushes to clean the laser optics. They always fail on the low power tracking laser. When it fails self test, it ejects.

also

First unplug power for at least an hour, then press and hold the power/on button while plugging back in, and keep holding for another 60 seconds .

Here is the Service Manual

https://www.manualslib.com/manual/683358/Panasonic-Sa-Ak87.html

https://www.google.com/search?q=panasonic+sa-ak87+cd+keeps+ejecting+disc

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No there will not be a easy fix for this. You can keep putting up with this the way you have been or buy a new receiver and try to sell this one on craigslist, eBay, etc.

Disc loading mechanism fault. Disc is not loading properly to its seating. Contact any service technician.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

dvd cds run normally bluray freezes after 1 or 2 mins. i cleaned len an same problem occured on ps3 no overheating no dust

switch off power at the back. hold down eject button, keep holding, turn power button at the back to on. console fan will spin very fast ( at this time take your finger off the eject) then goes back to normal. try now to hold eject button for more than 9 sec; it will then eject your disc. if this dont help check this site: http://www.edepot.com/playstation3.html#PS3_Model_Differences
PS: most likely, you already have a problem with your Blu Ray laser (life span expired) or hopefully you will need to just re-allign your CD drive mechanics. dont open your console if you still covered with sony waranty. otherwise; give it a try; many youtube videos will show you how to do that.
Good luck

i have the same problem, i do not know how to fix it. i have 2 of them and one plays fine whilst the other does this

May have to open the unit up and manually remove the disk be very careful to put all parts back together the way it was do not force the disk out. Try it a few times before you put it back together, be careful not to touch anything and shock your self when plugged in. Only Qualified Tech should attempt this.

There are 6 or 7 phillips head screws that keep the top on; remove them and pop the top. This will give you access to all CD's. Remove them all, then plug the unit back in and press the open close button and check for normal operation. If it still wont open, it's broken a gear and needs to be serviced. You may consider replacement of the unit if inoperative, the replacement model is priced at $129.00 and a repair would probably cost the same if not more. If you need further help, post a comment and I can help you further.

Be persistant-shake the F&^% out of it. Face it with the disk slot facing down and just shake it a few times. Worked for me.

Try this....after a lot of frustration and research, what i found on the internet for this problem was usless. I tried holding down the eject button for 15 seconds to reset the disc drive, still it would'nt accept the disc. As i literally picked up the phone to ring sony, as the ps3 was on standby i pressed the eject button multiple times and heard 2 beeps each time, still the system stayed on standby. After that i then tried just putting the disc in as normal as its on standby and the system booted automatically and accepted my disc. I hope this helps others, as mine now works perfectly.

(PSN ID is Burnsy333)