I have a Pioneer CLD-D604 that I replaced the belt on and has 2 problems.

The first problem (though minor) the text the player displays stutters.

The second problem (the major one) when I want to skip to the second side the player's image stops and the motor moves to the correct position and won't read anything popping up an "E9" error on in the top right corner. The disc still spins but stays stuck on the image it last saw. I can hear the ribbon cable flapping as it returns to the regular position underneath as the disc keeps spinning too.

Any ideas on how to fix this?

I have another CLD-D604 as well where the CD tray comes out but not the LD tray. It may have other problems but let's solve one a time.

The display might be a bad capacitor. I think E9 is the track for the laser jamming when flipping sides mine was not following the track right and it ended up needing a screw adjusted on the laser mech. to get it to follow the track. *Here is also a link to a list of pioneer error codes: [IMPORTANT] List of Pioneer Error Codes Here is a link to the service manual: https://manuals.lddb.com/LD_Players/Pioneer/CLD/CLD-D604/CLD-D604-EN_Service_Manual_Scan.pdf