Epson EB 1735W - Manual (Page 36)

Security Functions 36
B
Select either "Full Lock" or "Partial Lock".
C
Select "Yes" when the confirmation message is
displayed.
The control panel buttons are locked according to the setting you
chose.
q
You can release the control panel lock by one of the
following two methods.
• From the remote control, select "Off" in "Settings" -
"Control Panel Lock" from the configuration menu.
• Press and hold down the [Enter] button on the control
panel for about seven seconds, a message is displayed and
the lock is released.