Epson PowerLite S4 User Manual page 27

Security Functions
Using the remote control
3 When the confirmation message is displayed, select "Yes".
The control panel buttons will be locked in accordance with the
selected setting.
There are two methods to cancel the projector's control panel lock.
p
• Using remote control, change the "Settings" - "Operation Lock" in the
configuration menu to "Off".
• Hold down the projector's [Enter] button continuously for about 7
seconds. A message will be displayed and the lock will be cancelled.
Using the control panel
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