The 647 sections have been shuffled, changed and overhauled several times in the last 15 years. It might be that the 647a listed as his conviction offense has since been changed to PC 647.6

647.6. (a) (1) Every person who annoys or molests any child under
18 years of age shall be punished by a fine not exceeding five
thousand dollars ($5,000), by imprisonment in a county jail not
exceeding one year, or by both the fine and imprisonment.


(further details of the statute can be found at the linked section)


- Carl