BenQ Projector MH741 User Manual

Operation51
2. Picture menu
Picture ModePre-defined picture modes are provided so you can optimize your 
projector image set-up to suit your program type. See Selecting a 
picture mode on page 35 for details.
Reference 
ModeSelects a picture mode that most suits your need for the image 
quality and further fine-tune the image based on the selections listed 
on the same page below. See Setting the User 1/User 2 mode on 
page 36 for details.
BrightnessAdjusts the brightness of the image. See Adjusting...

Operation 52
4. System Setup: Basic menu
Presentation 
TimerReminds the presenter to finish the presentation within a certain 
time frame. See Setting the presentation timer on page 39 for details.
LanguageSets the language for the On-Screen Display (OSD) menus. 
See Using the menus on page 28 for details.
Projector 
Installation The projector can be installed on a ceiling or behind a screen, or with 
one or more mirrors. See Choosing a location on page 18 for 
details.
Menu Setting
Menu display time...

Operation53
4. System Setup: Basic menuRemote 
ReceiverSets the preferred remote receiver (Front and Rear) allowing the 
projector to accept signals from the remote control.
Panel Key 
LockDisables or enables all panel key functions except   POWER on 
the projector and keys on the remote control. See Locking control 
keys on page 41 for details.
Background 
ColorSelects background appearance when there is no signal.
Splash Screen
Allows you to select which logo screen will appear during projector...

Operation
54
5. System Setup: Advanced menu
Baud Rate
Selects a baud rate that is identica l with your computer’s so that you 
can connect the projector using a suitable RS-232 cable and update 
or download the projector’s firmware. This function is intended for 
qualified service personnel.
Test PatternSelecting  On enables the function and the  projector displays the grid 
test pattern. It helps you adjust  the image size and focus and check 
that the projected image is free from distortion.
Closed...

Operation55
The Information menu shows you the current operating status of the projector.
6. Information men
u
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, NTSC, PAL, SECAM or RGB.
Lamp Usage Time
Displays the number of hours the lamp has been used....

Maintenance 56
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 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. 
• Use a canister of compressed air to remove dust. 
• If there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens 
cleaner...

Maintenance57
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. The method of calculating the equivalent lamp hour is as 
follows:
Lamp Usage Time = (hours used in Normal mode) + (hours used in Economic mode) + 
(hours used in SmartEco mode)
Equivalent lamp hour = 1.8*(hours used in Normal mode) + 1.3*(hours used in Economic 
mode) + 1.00*(hours used in SmartEco mode)
See Setting...

Maintenance 58
Setting Auto Power Off
This function allows the projector to turn off automatically if no input source is detected 
after a set period of time to prevent unnecessary waste of lamp life.
To  s e t  Auto Power Off, go into the SYSTEM SETUP: Basic > Auto Power Off 
menu and press ◄/►. The time period can be set from 5 to 30 minutes in 5-minute 
increments. If the preset time lengths are not suitable for your presentation, select 
Disable. The projector will not automatically shut down in a...

Maintenance59
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://www.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 projector off and let the projector cool for 45 minutes....

Maintenance 60
Replacing the lamp
• If lamp replacement is performed while the projector is suspended upside-down from the 
ceiling, make sure that no one is underneath the lamp socket to avoid any possible injury or 
damage to the human eyes caused by fractured 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...