Hi, I've had the same problem on the same player and there are two main problems you have fix.
The laser Head Is worn out and you have to change it. I've done it twice during the years. And you have to change the drawer belt.
I found da Toshiba laser for about 15 euros on eBay and the belt for about 5. Here you you can se how to do It by yourself.
Best regards,
Fabrizio
https://www.stereo.net.au/forums/topic/81872-marantz-sa-11s1-cd-player-basic-renoservice-warning-pic...
The laser Head Is worn out and you have to change it. I've done it twice during the years. And you have to change the drawer belt.
I found da Toshiba laser for about 15 euros on eBay and the belt for about 5. Here you you can se how to do It by yourself.
Best regards,
Fabrizio
https://www.stereo.net.au/forums/topic/81872-marantz-sa-11s1-cd-player-basic-renoservice-warning-pic...