BenQ Projector MX823ST User Manual

							Operation 31
Setting a preferred color temperature
To set a preferred color temperature:
1. Highlight Color Temperature and select Warm, Normal or Cool by pressing 
/  on the projector or remote control.
2. Press  to highlight Color Temperature Fine Tuning and press MODE/
ENTER. The Color Temperature Fine Tuning page displays.
3. Press  / to highlight the item you want to change and adjust the values by 
pressing / .
•R Gain/G Gain/B Gain: Adjusts the contrast levels of Red, Green, and Blue.
•R Offset/G Offset/B Offset: Adjusts the brightness levels of Red, Green, and 
Blue.
4. Press MENU/EXIT to exit and save the settings
3D Color Management
In most installation situations, color management will not be necessary, such as in 
classroom, meeting room, or lounge room situations where lights remain on, or where 
building external windows allow daylight into the room. 
Only in permanent installations with controlled lighting levels such as boardrooms, lecture 
theaters, or home theaters, should color management be considered. Color management 
provides fine color control adjustment to allow for more accurate color reproduction, 
should you require it.
Proper color management can only be achieved under controlled and reproducible viewing 
conditions. You will need to use a colorimeter (color light meter), and provide a set of 
suitable source images to measure color reproduction. These tools are not provided with 
the projector, however, your projector supplier should be able to provide you with suitable 
guidance, or even an experienced professional installer.
The Color Management provides six sets (RGBCMY) of colors to be adjusted. When you 
select each color, you can independently adjust its range and saturation according to your 
preference.
If you have purchased a test disc which contains various color test patterns and can be 
used to test the color presentation on monitors, TVs, projectors, etc, you can project any 
image from the disc on the screen and enter the 3D Color Management menu to make 
adjustments.
To adjust the settings:
1. Go to the PICTURE menu and highlight 3D Color Management.
2. Press MODE/ENTER on the projector or remote control and the 3D Color 
Management page displays.
3. Highlight Primary Color and press  /  to select a color from among Red, 
Yellow, Green, Cyan, Blue, or Magenta.
4. Press  to highlight Hue and press  /  to select its range. Increase in the range 
will include colors consisted of more proportions of its two adjacent colors. 
						

							Operation 32Please refer to the illustration to the right 
for how the colors relate to each other.
For example, if you select Red and set its 
range at 0, only pure red in the projected 
picture will be selected. Increasing its range 
will include red close to yellow and red close 
to magenta.
5. Press  to highlight Saturation and adjust 
its values to your preference by pressing  /
. Every adjustment made will reflect to 
the image immediately.
For example, if you select Red and set its 
value at 0, only the saturation of pure red 
will be affected.
Saturation is the amount of that color in a video picture. Lower settings produce less saturated colors; a 
setting of “0” removes that color from the image entirely. If the saturation is too high, that color will be 
overpowering and unrealistic.
6. Press  to highlight Gain and adjust its values to your preference by pressing  /
. The contrast level of the primary color you select will be affected. Every 
adjustment made will reflect to the image immediately. 
7. Repeat steps 3 to 6 for other color adjustments.
8. Make sure you have made all of the desired adjustments.
9. Press MENU/EXIT to exit and save the settings.
Resetting current or all picture modes
1. Go to the PICTURE menu and highlight Reset Picture Setting.
2. Press MODE/ENTER and press  /  to select Current or All.
•Current: returns current picture mode to the factory preset settings.
•All: returns all settings, except User 1/User 2 in the PICTURE menu to the 
factory preset settings.
Setting the presentation timer
Presentation timer can indicate the presentation time on the screen to help you achieve 
better time management when giving presentations. Follow these steps to utilize this 
function:
1. Go to the SYSTEM SETUP: Basic > Presentation Timer menu and press 
MODE/ENTER to display the Presentation Timer page.
2. Highlight Timer Period and decide the time period by pressing  / . The length 
of time can be set from 1 to 5 minutes in 1-minute increments and 5 to 240 minutes 
in 5-minute increments.
If the timer is already on, the timer will restart whenever the Timer Period is reset.
3. Press   to highlight Timer Display and choose if you want the timer to show up 
on the screen by press
ing /.
RED
BLUEGREEN Yellow
Cyan
Magenta
SelectionDescription
Always Displays the timer on screen throughout the presentation time.
3 min/2 min/1 min  Displays the timer on screen in the last 3/2/1 minute(s).
Never Hides the timer throughout the presentation time. 
						

							Operation 33 4. Press  to highlight Timer Position and set the timer position by pressing  /
.
5. Press   to highlight Timer Counting Direction and select your desired counting 
direction by pressing  / .
6. Press  to highlight Sound Reminder and decide if you want to activate sound 
reminder by pressing  / . If you select On, a double beep sound will be heard at 
the last 30 seconds of counting down/up, and a triple beep sound will be produced 
when the timer is up.
7. To activate the presentation timer, press   and press  /  to highlight On and 
press MODE/ENTER.
8. A confirmation message displays. Highlight Ye s and press MODE/ENTER on the 
projector or remote control to confirm. You will see the message “Timer is On” 
displaying on the screen. The timer starts counting when the timer is on.
To cancel the timer, perform the following steps:
1. Go to the SYSTEM SETUP: Basic > Presentation Timer menu and highlight 
Off. Press MODE/ENTER. A confirmation message displays.
2. Highlight Ye s and press MODE/ENTER to confirm. You will see the message 
“Timer is Off” displaying on the screen. 
Remote paging operations
Connect the projector to your PC or notebook with a USB cable prior to using the paging 
function. See Connection on page 17 for details.
You can operate your display software program (on a connected PC) which responds to 
page up/down commands (like Microsoft PowerPoint) by pressing PAGE +/PAGE - on 
the remote control.
If remote paging function doesnt work, check if the USB connection is correctly made and 
the mouse driver on your computer is updated to the latest version.
The remote paging function cannot work with Microsoft® Windows®98 operating system. Windows®XP or 
higher operating systems are recommended.
Freezing the image
Press FREEZE on the remote control to freeze the image. The word “FREEZE” will 
display in the upper left corner of the screen. To release the function, press any key on the 
projector or remote control.
If your remote control has the following keys, please note that they cannot be pressed to release the function: 
LASER, PAGE +/PAGE -.
Even if an image is frozen on the screen, the pictures are running on the video or other 
device. If the connected devices have active audio output, you will still hear the audio even 
though the image is frozen onscreen.
Top-Left Bottom-Left Top-Right Bottom-Right
SelectionDescription
Count Up Increases from 0 to the preset time.
Count Down Decreases from the preset time to 0. 
						

							Operation 34
Hiding the image
In order to draw the audiences full attention to the presenter, you can use ECO BLANK 
on the projector or remote control to hide the screen image. When this function is 
activated with an audio input connected, the audio can still be heard. 
You can set the blank time in the SYSTEM SETUP: Basic > Operation Settings > 
Blank Timer menu to let the projector return the image automatically after a period of 
time when there is no action taken on the blank screen.
If the preset time spans are not suitable for your presentation, select Disable.
No matter Blank Timer is activated or not, you can press most of the keys on the 
projector or remote control to restore the picture.
Locking control keys
With the control keys on the projector locked, you can prevent your projector settings 
from being changed accidentally (by children, for example). When the Panel Key Lock is 
on, no control keys on the projector will operate except  POWER.
1. Go to the SYSTEM SETUP: Basic > Panel Key Lock menu, and select On by 
pressing  /  on the projector or remote control. A confirmation message 
displays. 
2. Highlight Ye s and press MODE/ENTER to confirm.
To release panel key lock, use the remote control to enter the SYSTEM SETUP: Basic
 
> 
Panel Key Lock menu and press  /  to select Off.
•  Keys on the remote control are still active when panel key lock is enabled.
•  If you turn off the projector without disabling panel key lock, the projector will still be in locked status the 
next time it is turned on.
Operating in a high altitude environment
We recommend you use the High Altitude Mode when your environment is between 
1500 m –3000 m above sea level, and ambient temperature is between 0°C–30°C.
Do not use the High Altitude Mode if your altitude is between 0 m and 1500 m and ambient temperature is 
between 0°C and 35°C. The projector will be over cooled, if you turn the mode on under such a condition.
To activate the High Altitude Mode:
1. Press MENU/EXIT and then press  /  until the SYSTEM SETUP: Advanced 
menu is highlighted.
2. Press  to highlight High Altitude Mode and press  /  select On. A 
confirmation message displays.
3. Highlight Ye s and press MODE/ENTER.
Operation under High Altitude Mode may cause a higher decibel operating noise level 
because of increased fan speed necessary to improve overall system cooling and 
performance.
If you use this projector under other extreme conditions excluding the above, it may 
display auto shut-down symptoms, which is designed to protect your projector from over-
heating. In cases like this, you should switch to High Altitude mode to solve these 
symptoms. However, this is not to state that this projector can operate under any and all 
harsh or extreme conditions. 
						

							Operation 35
Adjusting the sound
The sound adjustments made as below will have an effect on the projector speaker(s). Be 
sure you have made a correct connection to the projector audio input. See Connection 
on page 17 for how the audio input is connected.
Muting the sound
To temporarily turn off the sound:
1. Press MENU/EXIT and then press  /  until the SYSTEM SETUP: Advanced 
menu is highlighted.
2. Press  to highlight Audio Settings and press MODE/ENTER. The Audio 
Settings page displays.
3. Highlight Mute and press  /  to select On.
If available, you can also press MUTE on the remote control to toggle projector audio between on and off.
Adjusting the sound level
To adjust the sound level, press /, or:
1. Repeat steps 1-2 above.
2. Press  to highlight Volume and press  /  to select a desired sound level.
Turning off the Power On/Off Ring Tone
To turn off the ring tone:
1. Repeat steps 1-2 above.
2. Press  to highlight Power On/Off Ring Tone and press  /  to select Off.
The only way to change Power On/Off Ring Tone is setting On or Off here. Setting the sound mute or 
changing the sound level will not affect the Power On/Off Ring Tone.
Using the test pattern
The projector is able to display the grid test 
pattern. It helps you adjust the image size and 
focus and check that the projected image is free 
from distortion.
To display the test pattern, open the OSD menu 
and go to the SYSTEM SETUP: Advanced > 
Test Pattern and press  /  to select On. 
						

							Operation 36
Using the teaching templates
The projector provides several preset patterns for various teaching purposes. To activate 
the pattern:
1. Open the OSD menu and go to the DISPLAY > Teaching Template menu and 
press /   to select Blackboard or Whiteboard.
2. Press /  to choose the pattern you need. 
3. Press MODE/ENTER to activate the pattern.
Teaching 
TemplateWhiteboardBlackboard
Letter 
Formation
Worksheet
Coordinate 
Chart 
						

							Operation 37
Shutting down the projector
1. Press  POWER or   OFF and a confirmation message will display prompting 
you. 
If you dont respond in a few seconds, the message will disappear.
2. Press  POWER or   OFF a second time. The POWER indicator light 
flashes orange, the projection lamp shuts down, and the fans will continue to run for 
approximately 90 seconds to cool down the projector.
To protect the lamp, the projector will not respond to any commands during the cooling process.
To shorten the cooling time, you can also activate the Quick cooling function. See Quick Cooling on page 45 
for details.
3. Once the cooling process finishes, a Power Off 
Ring Tone will be heard. The POWER indicator 
light is a steady orange and fans stop. Disconnect 
the power cord from the power outlet.
•  To turn off the power ring tone, see Turning off the Power On/Off 
Ring Tone on page 35 for details.
•  If the projector is not properly shut down, to protect the lamp, 
when you attempt to re-start the projector, the fans will run for a 
few minutes to cool down. Press   POWER or   ON again 
to start the projector after the fans stop and the POWER 
indicator light turns orange.
•  Lamp life results will vary depending on environmental conditions 
and usage.
Direct power off
The AC power cord can be pulled out right after the projector is turned off. To protect 
the lamp, wait about 10 minutes before re-starting the projector. (When you attempt to 
re-start the projector, the fans may run for a few minutes to cool down. In such cases, 
press  POWER or  ON again to start the projector after the fans stop and the 
POWER indicator light turns orange. 
						

							Operation 38
Menu operation
Menu system
Please note that the on-screen display (OSD) menus vary according to the signal type 
selected and the projector model you are using.
Main menu Sub-menu Options
1. 
DISPLAY
Wall ColorOff/Light Yellow/Pink/Light Green/Blue/
Blackboard
Aspect RatioAuto/Real/4:3/16:9/16:10
Keystone
Position
Phase
H. Size
Digital Zoom
3D3D ModeAuto/Top Bottom/Frame Sequential/
Frame Packing/Side by Side/Off
3D Sync InvertDisable/Invert
Apply 3D 
Settings3D Settings 1/3D Settings 2/3D Settings 
3/Off
Save 3D 
Settings3D Settings 1/3D Settings 2/3D Settings 
3
Teaching 
TemplateBlackboardOff/Letter Formation/Worksheet/
Coordinate Chart
WhiteboardOff/Letter Formation/Worksheet/
Coordinate Chart
2. 
PICTURE
Picture ModeDynamic/Presentation/sRGB/Cinema/(3D)/User 1/User 2
Reference ModeDynamic/Presentation/sRGB/Cinema/(3D)
Brightness
Contrast
Color
Tint
Sharpness
Brilliant ColorOn/Off
Color TemperatureCool/Normal/Warm
Color Temperature Fine TuningR Gain/G Gain/B Gain/R Offset/G 
Offset/B Offset
3D Color 
ManagementPrimary ColorR/G/B/C/M/Y
Hue
Saturation
Gain
Reset Picture SettingsCurrent/All/Cancel
3. 
SOURCEQuick Auto SearchOn/Off
Color Space ConversionAuto/RGB/YUV 
						

							Operation 39
Main menu Sub-menu Options
4. 
SYSTEM 
SETUP: 
Basic
Presentation 
TimerTimer Period1~240 minutes
Timer DisplayAlways/3 min/2 min/1 min/Never
Timer PositionTop-Left/Bottom-Left/Top-Right/
Bottom-Right
Timer Counting 
DirectionCount Down/Count Up
Sound ReminderOn/Off
On/Off
Language
Projector InstallationFront Table/Rear Table/Rear Ceiling/
Front Ceiling
Menu SettingsMenu Display 
Time5 sec/10 sec/20 sec/30 sec/Always
Menu PositionCenter/Top-Left/Top-Right/Bottom-
Right/Bottom-Left
Reminder 
MessageOn/Off
Operation 
SettingsDirect Power OnOn/Off
Signal Power OnOn/Off
Auto Power OffDisable/3 min/10 min/15 min/20 min/25 
min/30 min
Quick CoolingOn/Off
Instant RestartOn/Off
Blank TimerDisable/5 min/10 min/15 min/20 min/25 
min/30 min
Sleep TimerDisable/30 min/1 hr/2 hr/3 hr/4 hr/8 hr/
12 hr
Remote ReceiverFront+Rear/Front/Rear
Panel Key LockOn/Off
Background ColorBenQ/Black/Blue/Purple
Splash ScreenBenQ/Black/Blue 
						

							Operation 40Note that the menu items are available when the projector detects at least one valid signal. 
If there is no equipment connected to the projector or no signal detected, limited menu 
items are accessible.
Main menu Sub-menu Options
5. 
SYSTEM 
SETUP: 
Advanced
High Altitude ModeOn/Off
Audio SettingsMuteOn/Off
Volume
Power On/Off 
Ring ToneOn/Off
Lamp SettingsLamp ModeNormal/Economic/SmartEco/
LampSave/LumenCare
Reset Lamp Timer
Equivalent Lamp
Security 
SettingsChange Password
Change Security 
SettingsPower On Lock
Baud Rate2400/4800/9600/14400/19200/
38400/57600/115200
Test PatternOn/Off
Closed CaptionClosed Caption 
EnableOn/Off
Caption VersionCC1/CC2/CC3/CC4
Standby 
SettingsNetworkOn/Off
Monitor OutOn/Off
Audio Pass 
ThroughOff/Audio in 1/Audio in 2/Audio L/
R/HDMI/MHL
MHL ChargingOn/Off
Network 
SettingsWired LANStatus
DHCP
IP Address
Subnet Mask
Default Gateway
DNS Server
Apply
AMX Device 
DiscoveryOn/Off
MAC Address
Reset All Settings
6. 
INFORMA
TION
Current System Status• Source
• Picture Mode
• Lamp Mode
• Resolution
• 3D Format
• Color System
• Equivalent Lamp
• Firmware Version