Magnavox MRV640 Owner's Manual page 87

The Parental control levels depend on the country in which the DVD was manufactured.
Therefore, it is necessary that you enter the country for which these values apply.
1
Turn on your TV. Select the channel number for the DVD
Recorder (Audio/Video In or channel 3 or 4).
2 Turn on the DVD Recorder by pressing STANDBY-ON m .
3
Press SYSTEM-MENU . The menu bar will appear.
4
' using D or C .
Select '
5
Select ' (
C .
6
Select '
7
Press the number buttons to enter a four-digit code of your
choice. If this is your first time entering your code, you must
enter this code a second time to confirm it.
8
Select '
9
Select your country or that of the DVD using A or B and
confirm with OK .
10
To end, press D and then SYSTEM-MENU .
Access control (Child lock)
)' using B or A and confirm with
' by pressing C .
' using A or B and confirm with C .