Belt replacment on Sony tape deck TCWR535 resulted in auto-reverse and one direction not working. Any ideas??

I just replaced both sets of belts on my Sony TCWR535 tape decks, per the excellent Instructables directions. Getting the belts on was a bit tricky, but I think I did it correctly. But now both decks only run in one direction, and won't auto-stop/auto reverse. At the end of the tape, they just sit and clunk. Any suggestions on what I did wrong?

NachoMahma8 years ago
. Double-check the belt routing. If possible, find a factory service manual. . Make sure you didn't knock something loose on the reversing mechanism or sensing switches.