Hyundai 0090509536 - Manual (Page 15)

Press H.LOCK to enter it and input the password correctly, the H.LOCK menu
will appear on the screen(The initial password is 0000).
Change password: The password can be changed. Press CH+/- to select
Change password and VOL+/OK to enter. The screen will display New PW:----,
then enter the new password and the screen display Confirm PW:----, if the same
password is input correctly twice, the old password will be changed.
Tuner Lock: The tuner can be locked. Press CH+/- to select.
Preset Source: Preset the source.
Preset CH.: Preset the channel.
Source Lock: The source can be locked. Press CH+/- to select.
Child Lock: Press CH+/- to select it . Press VOL+/- to set on or off mode. If lock
on mode is set, child lock is inactivated automatically. In such case, buttons
on the television is useless and only buttons on remote control can be used,
if buttons on the television are pressed, the screen will display Child Lock.
The child lock mode can be resumed by entering lock set menu, set child lock on.
Unlocked: Press to turn to the unlocked mode.