BenQ Mw821st Digital Projector User 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 projecto r 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 au tomatically if no input signal is 
detected after a set period of time. See  Setting Auto Power Off on 
page 47...

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 
Settings
Mute
Volume
Microphone Volume
Power On/Off Ring Tone
See Adjusting the sound on page 33 for details.
Lamp 
Settings
Lamp Mode
See Setting Lamp Mode as Economic or SmartEco on page 47 for 
details.
Reset Lamp Timer
See Resetting the lamp timer on page 51 for details.
Equivalent Lamp Hour
See Getting to know the lamp hour on...

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.
Microphone
Selecting  On enables the function. The projector can output the 
microphone signal when it is in standby mode and all the necessary 
equipment is correctly connected. See  Playing sound through the 
projector on page 16 for details.
Monitor Out
Selecting  On enables the function. The projector can output a VGA...

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

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 and let it cool down completely before cleaning the lens.
•  Use a canister of compressed air to...

Maintenance 47
Lamp information
Getting to know the lamp hour
When the projector is in operation, the duration (in hours) of lamp usage is automatically 
calculated by the built-in timer. 
See Setting Lamp Mode as Economic or SmartEco below for more information on Economic mode.
To obtain the lamp hour information:
1. Press MENU/EXIT and then press  /  to highlight the SYSTEM SETUP: 
Advanced menu.
2. Press  to highlight Lamp Settings and press MODE/ENTER. The Lamp 
Settings page displays.
3. You will...

Maintenance 48
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 TEMPerature warning light will light up if the lamp becomes too hot. 
Turn the power off and let the projector cool for 45 minutes....

Maintenance 49
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...

Maintenance 5012. Connect the power and restart the projector.
Do not turn the power on with the lamp cover removed. 
6. Use the handle to slowly pull the lamp out of 
the projector.
•  Pulling it too quickly may cause the lamp to break and 
scatter broken glass in the projector.
•  Do not place the lamp in locations where water might 
splash on it, children can reach it, or near flammable 
materials.
•  Do not insert your hands into the projector after the 
lamp is removed. If you touch the optical...