BenQ Dx819st Users Manual

Operation 41
Function Description
Quick Auto 
SearchSee Switching input signal on page 24 for details.
Color Space 
ConversionSee Changing Color Space on page 24 for details.
Presentation 
TimerReminds the presenter to finish the presentation within a certain time 
frame. See Setting the presentation timer on page 30 for details.
LanguageSets the language for the On-Screen Display (OSD) menus. See Using 
the menus on page 21 for details.
Projector 
InstallationThe projector can be installed on a ceiling...

Operation 42
Function Description
Operation 
Settings
Direct Power On
Allows the projector to turn on automatically once the power is fed 
through the power cord.
Signal Power On
Sets whether to turn the projector directly on without pressing   
POWER or ON when the projector is in standby mode and the 
signal is feed through the VGA cable.
Auto Power Off
Allows the projector to turn off automatically if no input signal is 
detected after a set period of time. See Setting Auto Power Off on 
page 48 for...

Operation 43
Function Description
High 
Altitude 
ModeA mode for operation in high altitude areas. See Operating in a high 
altitude environment on page 32 for details.
Audio 
SettingsSee Adjusting the sound on page 33 for details.
Lamp 
Settings
Lamp Mode
See Setting the Lamp Mode on page 48 for details.
Reset Lamp Timer
See Resetting the lamp timer on page 52 for details.
Equivalent Lamp
See Getting to know the lamp hour on page 48 for details on how the 
total lamp hour is calculated.
Security...

Operation 44
Function Description
Standby 
Settings
Network
Selecting On enables the function. The projector is able to provide the 
network function when it is in standby mode.
Monitor Out
Selecting On enables the function. The projector can output a VGA 
signal when it is in standby mode and the COMPUTER-1 jack is 
correctly connected to devices. See Connection on page 16 for how 
to make the connection.
Audio Pass Through
The projector can play sound when it is in standby mode and the 
corresponding...

Operation 45
Function Description
Current 
System 
Status
Source
Shows the current signal source.
Picture Mode
Shows the selected mode in the PICTURE menu.
Lamp Mode
Shows the current lamp mode.
Resolution
Shows the native resolution of the input signal.
3D Format
Shows the current 3D mode.
Color System
Shows input system format.
Equivalent Lamp
Displays the number of hours the lamp has been used.
Firmware Version
Shows the firmware version of your projector.
6. INFORMATION menu
Downloaded From...

Maintenance 46
Maintenance
Care of the projector
Your projector needs little maintenance. The only thing you need to do on a regular basis 
is to keep the lens and case clean.
Never remove any parts of the projector except the lamp. Contact your dealer if other 
parts need replacing.
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the surface. Please be sure to turn off 
the projector, unplug the power cable and let it cool down completely before cleaning the 
lens.
•  Use a canister...

Maintenance 47 every 500 hours of use, depending on the air quality of the environment where the 
projector is installed and used).
•  Be sure to turn OFF the projector and unplug it from power source before replacing the filter.
•  If your projector is ceiling-mounted or is not easily accessible, pay special attention to your personal 
safety when replacing the dust filter.
To replace the dust filter, follow the steps below:
Resetting the filter timer
6. After the startup logo, open the On-Screen...

Maintenance
48
Lamp information
Getting to know the lamp hour
When the projector is in operation, the durati on (in hours) of lamp usage is automatically 
calculated by the built-in timer. 
Total (equivalent) lamp hour= 2.22 x (hours used in  Normal mode) + 1.67 x (hours used 
in  Economic  mode) + 1.54 x (hours used in  SmartEco mode) + 1.00 x (hours used in 
LampSave  mode)
To obtain the lamp hour information:
1. Press  MENU/EXIT  and then press  /  to highlight the  SYSTEM SETUP: 
Advanced  menu.
2....

Maintenance 49
Timing of replacing the lamp
When the Lamp indicator lights up red or a message appears suggesting it is time to 
replace the lamp, please install a new lamp or consult your dealer. An old lamp may cause a 
malfunction in the projector and in some instances the lamp may explode. 
Go to http://lamp.benq.com for a replacement lamp.
The LAMP indicator light and TEMP (Temperature) warning light will light up if the lamp becomes 
too hot. Turn the power off and let the projector cool for 45...

Maintenance 50
Replacing the lamp
•  To reduce the risk of electrical shock, always turn the projector off and disconnect the power cord before 
changing the lamp.
•  To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing the 
lamp.
•  To reduce the risk of injuries to fingers and damage to internal components, use caution when removing 
lamp glass that has shattered into sharp pieces.
•  To reduce the risk of injuries to fingers and/or compromising image...