JVC KW-NT800HDT Manuel D'instructions page 112

Setting the security lock
You can set the startup security lock as an antitheft
measure.
To set the security code
1
Press - <Settings>.
2
3
4
Press around
5
Enter a 4-8 digit security code, then press
[OK].
for about 3 seconds.
Press: Deletes the last character
Hold: Deletes all characters
6
Enter the same security code again, then
press [OK].
• After setting the security code, entering the
security code is necessary each time you turn on
the unit.
112