Hello Thomas
I have the manual for the HS series, as do several other members here – much of it will relate to the HSX range.
If the cart you are going to record on to is brand new ‘out of the wrapper’ then no erasure is necessary. Only if the cart has audio already recorded on it will you need to erase it. There is no erase head in Sonifex players/record units so any further audio recorded will be over the existing and added to it – a very unsatisfactory situation.
The only successful way to do this is to use a bulk eraser or best of all, the dedicated Sonifex cart eraser/splice finder unit – got mine on eBay for a tenner several years back !