Seiko Group POWERLITE 7500 UB Manuale Utente

Making Basic Adjustments

The projector includes two lock settings to prevent the image from being accidentally 
changed once it’s adjusted, and to keep children from turning on the projector without adult 
supervision. 

To access the lock settings, follow these steps:

1. Press the 

Menu

 button on the remote control.

2. Use the menu navigation buttons to open the 

Settings 

menu.

3. Choose from these options:

■ Child Lock

 to disable the Ppower button on the 

projector’s control panel unless it is pressed for 
about 3 seconds. (You can use the Ppower button 
to turn it off, however.) Since you can still use the 
remote control to turn on the projector, you may 
want to keep it away from children’s reach.

■ Control Panel Lock

 to disable all the buttons on the projector’s control panel. A 

lock icon appears on the screen whenever you press a button with Control Panel 
Lock turned on. To operate the projector, you must use the remote control. To 
cancel Control Panel Lock, press and hold the

 

Enter

 button on the projector’s 

control panel for at least 7 seconds.

4. Press 

Menu

 to exit the menu system. 

If you turned on the Control Panel Lock, the projector buttons are now locked.

If you turned on the Child Lock, turn off the projector and let it cool down. The Child 
Lock takes effect after the cool-down period.

Caution: If the Direct Power On setting is turned on (see page 46), using the main power 
switch can cause the projector to start even though the Child Lock is in use.

Menu 
button

Menu 
navigation 
buttons