Using Your Projector 27PREFERENCESVOLUME —Press todecrease the volume andto increase the volume.M UTE —Allows to mute thesound.M ENU L OCK—Select ON toenable Menu Lock forhiding the OSD menu. Todisable Menu Lock, pressthe Menu button on thecontrol panel or the remotecontrol for 15 seconds.M ENU TIMEOUT —Adjust thetime delay of the OSDTimeout. The Defaultsetting is 30 seconds.PASSWORD—Protect your projector and restrict access to it with PasswordSecurity feature. This security utility enables you to impose a variety ofaccess restrictions to protect your privacy and stop others from tamperingwith your projector. This means that the projector cannot be used if it istaken without authorization, and thus serves as a theft-prevention feature.When Password Protect is enabled (On), a Password Protect screenrequesting you to enter a password will be displayed when the power plug isinserted into the electrical outlet and the power for the projector is firstturned on. By default, this function is disabled. You can enable this featureusing the Password menu. This password security feature will be activated onthe next time you turn on the projector. If you enable this feature, you willbe asked to enter the projector's password after you turn on the projector: