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I am new to this forum, and would be grateful for help. Over the years the drawer of my Sony CDP-337ESD became sluggish. Eventually, it would not come all the way out by itself. So I changed the two belts in the KSS-190a transport to new ones. This improved things, but the speed of the drawer going in and out was still not as fast as it was when new. So this time I cleaned all the sticky old grease out from all the gears and put new grease on. Unfortunately, after I put everything back together again, now the drawer does not move at all. The front display says “Open” and “Close”. There is no sign of any activity from either of the motors and the CD does not spin. The two Mabuchi RF-510T motors that drive the belts and gears are still OK. Any ideas where I might have damaged the 337ESD?