I found my Clarion VRX8370R in the Camper I bought and I wasn't able for month to understand it.
The Owner Manual was perfect and just what I was searching for.
Thank you.
Leonardo
Text excerpt from page 33 (click to view)
--CARACT.-PARENTAL MOT DE PASSE
POUR LES ENF. G CP PG-13 PG-R INT-17 X PAS PARENTAL