The Technics manual sets it out pretty clearly.
From memory ... set the tonearm balance weight so the tonearm is floating more or less horizontally. Set the tonearm weight to zero ... then adjust the weight to the manufacturer's specified cartridge weight (so you should use 1.5 if that's how much your cartridge weighs - or 2.5 if it weighs 2.5). The number for anti-skate adjustment should be set to match the same number selected for tonearm weight adjustment.
As I said, this is from memory, so I hope it's correct.
The thing that kills me is when you see a pair of decks and 1) the tonearm weight figures never match each other (often a couple of grams out) and 2) the anti-skate settings rarely match each other, or the tonearm weight settings.
Suggest you do a Google search for the correct model of technics manual, if you don't have one, and download it
Hope this helps
Richard