Pressing menu button it says, the function is locked

1) Press the MENU-button ( ) to activate the OSD window.

2) Press or to navigate through the functions. Once the desired function is highlighted, press the MENU-button to
activate sub-menu . Once the desired function is highlighted, press MENU-button to activate it.

3) Press or to change the settings of the selected function. Press or to select another function in sub-menu .
Press AUTO( ) to exit . If you want to adjust any other function, repeat steps 2-3.

4) OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power
button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then
press power button to turn the monitor on.

5) Eco Mode hot key ( ) : Press the Eco key continuously to select the Eco mode of brightness when there is no OSD (
Eco mode hot key may not be available in all models).

6) Volume adjustment hot key : When there is no OSD , press Volume ( ) to active volume adjustment bar, press or
to adjust volume ( Only for the models with speakers).

http://www.retrevo.com/support/AOC-917SW-Monitors-manual/id/23449ag008/t/2/

http://s807.photobucket.com/home/budm/allalbums

Try unlocking it:
http://www.fixya.com/support/r4628438-aoc_monitor_lock_unlock_instructions

1) Press the MENU-button ( ) to activate the OSD window.

2) Press or to navigate through the functions. Once the desired function is highlighted, press the MENU-button to
activate sub-menu . Once the desired function is highlighted, press MENU-button to activate it.

3) Press or to change the settings of the selected function. Press or to select another function in sub-menu .
Press AUTO( ) to exit . If you want to adjust any other function, repeat steps 2-3.

4) OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power
button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then
press power button to turn the monitor on.

5) Eco Mode hot key ( ) : Press the Eco key continuously to select the Eco mode of brightness when there is no OSD (
Eco mode hot key may not be available in all models).

6) Volume adjustment hot key : When there is no OSD , press Volume ( ) to active volume adjustment bar, press or
to adjust volume ( Only for the models with speakers).

http://www.fixya.com/support/r4628438-aoc_monitor_lock_unlock_instructions

1) Press the MENU-button ( ) to activate the OSD window.

2) Press or to navigate through the functions. Once the desired function is highlighted, press the MENU-button to
activate sub-menu . Once the desired function is highlighted, press MENU-button to activate it.

3) Press or to change the settings of the selected function. Press or to select another function in sub-menu .
Press AUTO( ) to exit . If you want to adjust any other function, repeat steps 2-3.

4) OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power
button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then
press power button to turn the monitor on.

5) Eco Mode hot key ( ) : Press the Eco key continuously to select the Eco mode of brightness when there is no OSD (
Eco mode hot key may not be available in all models).

6) Volume adjustment hot key : When there is no OSD , press Volume ( ) to active volume adjustment bar, press or
to adjust volume ( Only for the models with speakers).

http://www.retrevo.com/support/AOC-917SW-Monitors-manual/id/23449ag008/t/2/

The OSD can be enabled or disabled by pressing and holding the Menu button on the front panel for 10 seconds. If the OSD is locked, the warning message OSD Lock displays for ten seconds.

* If the OSD is locked, press and hold the Menu button for 10 seconds to unlock the OSD.
* If the OSD is unlocked, press and hold the Menu button for 10 seconds to lock the OSD.

May need to do this with if off (OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then press power button to turn the monitor on.)

1) Press the MENU-button ( ) to activate the OSD window.

2) Press or to navigate through the functions. Once the desired function is highlighted, press the MENU-button to
activate sub-menu . Once the desired function is highlighted, press MENU-button to activate it.

3) Press or to change the settings of the selected function. Press or to select another function in sub-menu .
Press AUTO( ) to exit . If you want to adjust any other function, repeat steps 2-3.

4) OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power
button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then
press power button to turn the monitor on.

5) Eco Mode hot key ( ) : Press the Eco key continuously to select the Eco mode of brightness when there is no OSD (
Eco mode hot key may not be available in all models).

6) Volume adjustment hot key : When there is no OSD , press Volume ( ) to active volume adjustment bar, press or
to adjust volume ( Only for the models with speakers).

http://www.retrevo.com/support/AOC-917SW-Monitors-manual/id/23449ag008/t/2/

http://s807.photobucket.com/home/budm/allalbums

This is how:

OSD Lock & Unlock
When pressing the AUTO button after locking the OSD
When pressing the MENU button after locking the OSD
This is the function that locks the OSD in order to keep the current states of settings or prevent others
from adjusting the current settings.
Lock : Hold down the MENU button for more than five (5) seconds to activate the OSD adjustment
lock function.
Unlock : Hold down the MENU button for more than five (5) seconds to deactivate the OSD adjustment
lock function.

User manual:
http://www.samsung.com/us/support/detail/supportPrdDetail.do?menu=SP01&prd_mdl_cd=&prd_mdl_name=2233BW&prd_ia_sub_class_cd=P

hello You can deactivate the buttons on the unit
(except for "/1) for preventing misoperation,
such as child mischief (child lock function).
When the child lock function is activated, the
buttons on the unit are locked and “ ” lights
up in the front panel display. (You can operate
the system by using the remote.)
Note
•When you operate the buttons on the unit while the
child lock function is on, “CHILD LOCK” appears in
the front panel display.
1 Press SYSTEM MENU.
2 Press X/x repeatedly until “CHILD
LOCK” appears in the front panel
display, then press or c.
3 Press X/x to select a setting.
The default setting is underlined.
• “OFF”: Child lock function off.
• “ON”: Child lock function on.
4 Press .
The setting is made.
5 Press SYSTEM MENU.
The system menu turns off.
Tip
• You can activate the child lock function by pressing
x for more than 5 seconds (“ ” lights up in the
front panel display).
To cancel, press x for more than 5 seconds so that
“ ” disappears from the front panel display.
Deactivating the Buttons
on the Unit good luck

shaun

Child Lock

Combos--Should have original remote. Press and hold the power button for 6 to 10 seconds


Combo Model T25208, V-Chip Forgotten Password
If you forget your password, simultaneously press VOLUME down on the TV/VCR front panel and the 0 number button on the remote for a few seconds. This resets the password and you can enter a new one.

Combo Model 13TVR62, V-Chip Forgotten Password
If you forget your password, press STOP/EJECT on the TV/VCR front panel and MENU on the remote simultaneously. This resets the password, but not the limits you’ve set.
Televisions with Parental Lock Feature


If you forgot your password for this feature, press the following buttons on the remote, one at a time. (Note: You must be in the password entry screen) Press, Mute, Display,Clear and Reset, this unlocks parental controls and you can now re-enter a new password.
OR TRY THIS..
Press and hold Menu on the TV AND volume down on the remote for 3 seconds. Nothing will appear on the screen, and the Parental Controls will unlock, and you can re-enter a new password with the LOCK PARENTAL CONTROLS

CTC169AU
Channels that have been locked can be viewed only when the PARENTAL CTRL function is set to OFF. This can only be done with the remote control-it can not be changed with the buttons on the front of the TV.

Therefore, after you turn on PARENTAL CTRL, you simply hide the remote control so that your children can not watch the locked channels. The locked-out channels will remain unviewable even if the TV is unplugged or the channels are autoprogrammed again. The only way to view locked channels is to use the supplied remote control to set the PARENTAL CTRL function to OFF.

The PARENTAL CTRL and the CHAN CTRL functions work hand-in-hand. The instructions below will first tell you how to turn parental control on or off with the PARENTAL CTRL function and then how to lock desired channels with the CHAN CTRL function.
1. Repeatedly press MENU to select SETUP MENU, and then press + or - to display setup functions. Repeatedly press MENU to select the PARENTAL CTRL function. . When this function is set to ON, PARENTAL CTRL is activated and any channels you locked with the CHAN CTRL function will not be viewable. . When this function is set to OFF, PARENTAL CTRL is deactivated and all channels are viewable.

2. To lock channels, press the MENU button to select the CHAN CTRL function. Select a channel you want to lock by pressing CHANNEL up or down. Then press +. The CHAN CTRL setting will change from NORMAL to LOCKED when that channel is locked. To return the channel to NORMAL, press the - button. Repeat step 2 for each channel you want to lock. If the PARENTAL CTRL function is set to ON while you are locking out channels, each channel will go blank as you lock it. When the PARENTAL CTRL function is set to ON and a channel which has been locked out is tuned, the TV will display the words PARENTAL CONTROL to let your kids know you have locked it.

CTC185's
If the front panel function buttons don't work, (menu, ch up/dn etc.) but the functions work normal with the remote, enter the "Channel" menu with the remote and turn "Parental Control" off.

CTC203's
In the event you have forgotten your password, perform the following procedure:
Press and hold for 3 seconds the TV button on the remote while pressing the menu button on the TV.
This procedure will turn off the parental lock and erase the previous password .

Another Possibility To Try For Various Models: If TV's in the Parental mode and askes for a password that's forgotten, Press menu on the TV, select Parental Lock #4 on menu, then with the remote press Mute, Display, Clear, and Reset buttons in sequence.

TX808 Chassis
If Parental Controls have been set and you don't know the password, do this:
Press and hold the volume down and the channel up buttons at the same time for 5 seconds.
Now you can reset the password to 0000, and using that password you can now access the V-Chip menus.

TV's (Made by Daewoo or possibly Apex, ie. GE model 24GP653)
The factory default pass code of 6688 is also the override code, in case the owner forgets their pass code. If that doesn't work, another place in the owners manual says to push Function and Mute on the remote at the same time. Function is the top right button.