This is the closest I found, it's kind of a rare player. https://elektrotanya.com/sanyo_m-4430_mini_cassette_player_sm.pdf/download.html Good luck!
Thanks Mister X. I have that one, but the circuits are slightly different. The intention is to replace all the caps, and seeing as how they are not surface mount, I was going to see if a capacitor upgrade would be beneficial.