one of the best 70´s turntables, from 79 , i have a lot of them but this was one of my favorite for home use either than the PLC-590 ,20 series also from pioneer , a personaqlized SP-1 and a SL-1000MKII also from 79, technics , off course
I have used many cleaning products. Just make sure they are not too strong so that you lose the print. I used a good glass top stove cleaner for this turntable.
it´s the comon problem ,make it look like it was when new, i tried a litle brush with warm water and a lot of diluted lemon juice to avoid quimicals it cleaned good but i felt tired and left it half cleaned