My 2022 shows an error code SC320 and also a error code SC672 what could be the problem

CS320 polygon motor (laser), you will need to replace it, it is not expensive!
CS672 control communication on start up, to many options, from circuit board to bad connection, you will need a tech for this.

SC320 is an error of the polygon motor and this needs to be replaced.
SC672 is communication error and so you will need to change the commuication board if the means is there as it cost a bit and your problem is resolved.