haier PH-4210D - Manual (Page 28)

Source Lock
Source Lock is used to hinder external input modes, such as AV, S -Video and VGA. Press CH+/- button to select
the option, and press VOL+/- button to display Source Lock menu.
Source Lock
AV1 Off
S-Video Off
YPbPr/YCbCr Off
VGA Off
DVI Off
Child Lock
Max Volume
Unlock
Press CH+/- button to select Unlock mode.
Press VOL+/- button to unlock all set modes, will set all lock options to OFF, and the maximum volume returns to 100.
Channel number is used for setting up a preset channel at power on. Press CH+/- button to select CH Num. Press VOL+/- button,
to select channel number.(The item is not available except with a TV signal.)
CH Num(channel number)
28 Plasma TV
Press CH+/- button to select desired option. Press VOL+/- button to set up the
mode of Source Lock. If a Source Lock is set on, the screen will display
a blue background with the mute mode activated, and LOCK will be shown on the
screen. In Lock On mode, when screen is blank, icon Lock will be always
displayed on the screen. If lock mode is to be verified, enter Source Lock sub
menu and set relative mode off or select Unlock mode in the Lock Menu.
Press CH+/- button to select Child Lock. Press VOL+/- button to set On or Off mode. If lock on mode is set,
if buttons on TV are pressed, the screen will display Child Lock. This display can be turned off by pressing the EXIT
button, or 5 seconds later after the latest key press, the display will disappear automatically.
The Child Lock mode can be stopped by entering Lock Set menu to set Child Lock OFF or active Unlock.
Press CH+/- button to select Max Volume. Press VOL+/- button for adjustment between 0 100. If a certain value is set,
when volume is being adjusted, the sound value cannot exceed maximum the volume value. If current volume is over
Max Volume, when Lock Set menu is set, current volume will become set maximum volume. If current
volume is below maximum volume, customer set volume will be applied.