Sanyo PLC-XR251 Owner's Manual page 54

Setting
Enter a PIN code
Set
Change the PIN code lock setting
Change the PIN code
change
CAUTION:
WHEN YOU HAVE CHANGED THE PIN CODE, WRITE
DOWN THE NEW PIN CODE IN COLUMN OF THE
PIN CODE NO. MEMO ON PAGE 75, AND KEEP IT
SECURELY. IF YOU FORGET YOUR PIN CODE, THE
PROJECTOR CAN NO LONGER BE STARTED.
54
PIN code
Off On1 On2
PIN code
Enter a PIN code
Change the PIN code