You start by doing a Gooogle search for the error code, being sure to mention the exact error, the make and model number of the system.
maybe
"technics model pg1 error"
If that doesn't get you any useful results, post a question in English, rather than "yoof speak" on a forum like this, being sure to mention the exact model number of the system.
Once we have a real idea what you are talking about someone may be able to help you
dshys, November 2017