Acer XD1170 - Manual (Page 28)

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User Controls
Management
(Computer / Video
Mode)
Lamp Hour Reset
Press the button after choosing “Yes ”to turn the lamp hour
counter to 0 hours.
Security
Press to start “Security” setting. If the “Security” function is
enabled, your must enter “Administrator Password” first before
Security setting.
Security
This projector provides an excellent security function
for the administrator to manage the usage of the
projector.
 Select “On” to enable the security function. User
have to enter password depending on the " Security
Mode" . Please refer to "User Password" section for
details.
 Select “Off” then user can switch on the projector
without password.
Once the security function is enabled, the projector
will request user to enter password when switch
on the projector. Both “User Password” and
“Administrator Password” can be accepted for this
dialogue.