BenQ Projector MH741 User Manual

							Operation41
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 appears.
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 press   POWER to 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 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 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 ◄/► to select On. A 
confirmation message displays.
3. Highlight Yes 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.
Adjusting the sound
The sound adjustments made as below will have an effect on the projector speakers. Be 
sure you have made a correct connection to the projector audio input. See Connection 
on page 21 for how the audio input is connected. 
INPUT SOURCEAUDIO INAUDIO OUT
PC mini jack mini jack
HDMI-1, HDMI-2/MHL HDMI mini jack
VIDEO RCA mini jack
S-VIDEO RCA mini jack 
						

							Operation 42
Muting the sound
To temporarily turn off the sound,
• Using the remote control
Press MUTE to temporarily turn off the sound. While the sound is off, the screen will 
display   in the upper right corner of the screen.
To restore the sound, press MUTE again.
•Using the OSD menu
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.
4. To restore the sound, repeat steps 1-3 and press ◄/► to select Off.
Adjusting the sound level
To adjust the sound level,
• Using the remote control
Press   or   to select a desired sound level.
•Using the OSD menu
1. Repeat steps 1-2 above.
2. Press ▼ to highlight Vo l u m e and press ◄/► to select a desired sound level.
Microphone Volume
To adjust the microphone sound level, press MIC/VOL keys (+/-) on the remote control, 
or:
1. Repeat steps 1-2 above.
2. Press ▼ to highlight Microphone Volume and press ◄/► to select a desired 
sound level.
Turning off the Power on/off 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 capable of displaying the grid test 
pattern. It can be used to assist you with the 
adjustment of image size and focus, ensuring 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. 
						

							Operation43
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 and press ▲/▼ 
to select Blackboard or Whiteboard.
2. Press ◄/► to choose the pattern you need.
3. Press MODE/ENTER to activate the pattern.
Using the quick install
The projector provides a hot key to set Projector Installation, Test Pattern, and 
Keystone quickly.
Press Quick Install on the remote control and press ▲/▼ to select:
• Projector Installation: See 
Positioning your projector on page 18.
• Test Pattern: See 
Using the test pattern on page 42.
• Keystone: See 
Correcting 2D Keystone on page 26.
Teaching 
Te m p l a t eWhiteboardBlackboard
Letter 
Formation
Worksheet
Coordinate 
Chart 
						

							Operation 44
Shutting down the projector
1. Press  POWER or  OFF and a confirmation message will appear 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 52 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 42 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. 
						

							Operation45
Menu operation
Menu system
Please note that the on-screen display (OSD) menus vary according to the signal type 
selected. 
Main menu Sub-menu Options
1. 
Display
Wall colorOff/Light Yellow/Pink/Light Green/
Blue/Blackboard
Aspect Ratio Auto/Real/4:3/16:9/16:10
Auto Keystone On/Off
2D Keystone
Corner FitTop Left/Top Right/Bottom Left/
Bottom Right
Position
Phase
H.size
Digital zoom PC:1.0X~2.0X; Video: 1.0X~1.8X
3D3D modeAuto/Off/Frame sequential/Frame 
packing/Top bottom/Side by side
3D Sync Invert Disable/Invert
Save 3D Setting3D Settings 1/3D Settings 2/3D 
Settings 3
Apply 3D Setting3D Settings 1/3D Settings 2/3D 
Settings 3
Teaching TemplateBlackboardOff/Letter Formation/Worksheet/
Coordinate Chart
WhiteboardOff/Letter Formation/Worksheet/
Coordinate Chart 
						

							Operation 46
2. 
Picture
Picture ModeBright/Presentation/sRGB/Cinema/
3D/User 1/User 2
Reference ModeBright/Presentation/sRGB/Cinema/
3D
Brightness
Contrast
Color
Tint
Sharpness
Brilliant Color On/Off
Color 
Te m p e r a t u r eCool/Normal/Warm
Color 
Temperature Fine 
Tu n i n gR Gain/G Gain/B Gain/
R Offset/G Offset/B Offset
3D Color 
ManagementPrimary Color R/G/B/C/M/Y
Hue
Saturation
Gain
Reset picture 
settingsCurrent/All/Cancel
3. 
SourceQuick Auto Search On/Off
Color Space 
ConversionAuto/RGB/YUV
Main menu Sub-menu Options 
						

							Operation47
4. 
System 
Setup: Basic
Presentation 
TimerTimer Period 1~240 min
Timer Display Always/1 min/2mins/3 mins/Never
Timer PositionTop-Left/Bottom-Left/
Top-Right/Bottom-Right
Timer Counting 
DirectionCount Down/Count up
Sound Reminder On/Off
On/Off Yes/No
Language
Projector 
InstallationF r o n t  Ta b l e / R e a r  Ta b l e / R e a r  
Celling/Front Ceiling
Menu SettingMenu Display Time 5 sec/10 sec/20 sec/30 sec/Always
Menu PositionCenter/Top-Left/Top-Right/
Bottom-Right/Bottom-Left
Reminder Message On/Off
Operation SettingDirect Power On On/Off
Signal Power On On/Off
Auto Power OffDisable/3 mins/10 mins/15 mins/
20 mins/25 mins/30 mins
Quick Cooling On/Off
Instant Restart On/Off
Blank TimerDisable/5 mins/10 mins/
15 mins/20 mins/25 mins/
30 mins
Sleep TimerDisable/30 mins/1 hr/2 hrs/3hrs/
4hrs/8 hrs/12hrs
Remote Receiver Front+Rear/Front/Rear
Panel Key Lock On/Off
Background Color BenQ/Black/Blue/Purple
Splash Screen BenQ/Black/Blue
Main menu Sub-menu Options 
						

							Operation
48
Note that the menu items are available when th e projector detects at least one valid signal. 
If there is no equipment connected to the pr ojector or no signal detected, limited menu 
items are accessible.
5. 
System 
Setup: 
Advanced
High Altitude 
Mode On/Off
Audio Settings Mute
On/Off
Vo l u m e
Microphone 
Vo l u m e
Power on/off Ring On/Off
Lamp Settings Lamp Mode Normal/Economic/SmartEco
Reset Lamp Timer Reset/Cancel
Lamp Timer
Security Setting Change Passward
Change Security 
Settings
Power On Lock On/Off
Baud Rate 2400/4800/9600/14400/19200/
38400/57600/1152000
Test Pattern On/Off
Closed Caption Closed Caption 
Enable
On/Off
Caption Version CC1/CC2/CC3/CC4
Standby Settings Microphone On/Off
Monitor Out On/Off
Audio Pass 
Through
Off/Audio in/Audio L/R/HDMI 1/
HDMI 2/MHL
Reset All Settings
Reset / Cancel
6. 
InformationCurrent System 
Status •Source
•Picture Mode
•Lamp Mode
•Resolution
•3D Format
• Color System
• Lamp Usage Time
• Firmware Version
Main menu Sub-menu
Options 
						

							Operation49
Description of each menu
FUNCTIONDESCRIPTION 
1. Display menu
Wall colorCorrects the projected picture’s color when the projection surface is 
not white. See Using Wall Color on page 35 for details.
Aspect RatioThere are several options to set the images aspect ratio depending 
on your input signal source. See Selecting the aspect ratio on page 
33 for details.
Auto KeystoneCorrects vertical keystoning of the image automatically.
2D KeystoneAdjusts the shape of the projected image to ensure straight lines on 
all four corners. See Correcting 2D Keystone on page 26 for 
details.
Corner FitAdjusts the shape of the projected image to ensure a specific corner 
is straight. See Correcting Corner Fit on page 27 for details.
Po s i t i o n
Displays the position adjustment page. To move the projected image, 
use the directional arrow keys. The values shown on the lower 
position of the page change with every key press you made until they 
reach their maximum or minimum.
This function is only available when a PC signal (analog RGB) is 
selected.
Phase
Adjusts the clock phase to reduce image 
distortion.
This function is only available when a PC signal 
(analog RGB) is selected.
H.sizeAdjusts the horizontal width of the image. This function is only 
available when a PC signal (analog RGB) is selected.
Digital zoomMagnifies or reduces the projected image. See Magnifying and 
searching for details on page 33 for details. 
						

							Operation 50
1. Display menu
3D
This projector features a 3D function which enables you to enjoy the 
3D movies, videos, and sporting events in a more realistic way by 
presenting the depth of the images. You need to wear a pair of 3D 
glasses to view the 3D images.
3D Mode
The default setting is Auto and the projector automatically chooses 
an appropriate 3D format when detecting 3D contents. If the 
projector cannot recognize the 3D format, press ◄/► to choose a 
3D mode.
When the 3D function is on:
•The brightness level of the projected image will decrease.
•The following settings cannot be adjusted: Picture Mode, 
Reference Mode.
•The Keystone can only be adjusted within limited degrees.
3D Sync Invert
When you discover the inversion of the image depth, enable this 
function to correct the problem.
Save 3D Settings
When you have successfully displayed the 3D contents after making 
the appropriate adjustments, you can enable this function and choose 
a set of 3D settings to memorize current 3D settings.
Apply 3D Settings
After the 3D settings are saved, you can decide if you would like to 
apply them by choosing a set of 3D settings that you have saved. 
Once applied, the projector will automatically play the incoming 3D 
contents if it matches the 3D settings saved.
Only the set(s) of 3D settings with memorized data is available.
Teaching 
Te m p l a t eSee Using the teaching templates on page 43 for details.
FUNCTIONDESCRIPTION