Old copier - SHARP SF2014

Question

I was wondering if anyone could hook me up with a "cleaning" procedure for my old copier (Sharp SF2014). I bought this machine years ago at an auction, it did not have a manual. Our local copy service shop has been taking care of me for the past few years, but now they say the machine is too old to keep under contrat.. so I was wondering if there are instruction for cleaning. the machine still works good... so if I can keep it clean I might get another year or so out of it.

thanks