Yamaha PSR-12 Product Manual page 21

The serial number of this product may be found on
the bottom of the unit. You should note this serial
number in the space provided below and retain this
manual as a permanent record of your purchase to
aid identification in the event of theft.
Model No. PSR-12
Serial No.
Concerning Warranty
This product was made for international distribution,
and since the warranty for this type of product varies
from marketing area to marketing area, please contact
the selling agency for information concerning the
applicable warranty and/or service policies.
YAMAHA
YAMAHA CORPORATION
P.O.Box 1, Hamamatsu, Japan