BenQ Mp723 Digital Projector User Manual

Operation 51
SYSTEM SETUP: Advanced menu
FUNCTION
(default setting / 
value)DESCRIPTION
Quick 
Cooling
(On)Enables or disables the Quick Cooling function. Selecting On enables the 
function and projector cooling time will be shortened from a normal 90-
second duration to approximately 30 seconds.
High Altitude 
Mode
(Off)A mode for operation in high altitude areas. See Operating in a high 
altitude environment on page 43 for details.
Audio 
Settings
Mute (Off)
Volume (5)
Power on/off ring tone (On)
See...

Operation 52
INFORMATION menu
This menu shows you the current operating status of the projector.
Some picture adjustments are available only when certain input sources are in use. 
Unavailable adjustments are not shown on the screen.
FUNCTIONDESCRIPTION
FAQ-Image and 
Installation
Displays possible solutions to problems you may encounter.FAQ-Features 
and Service
Current System 
Status
Source
Shows the current signal source.
Picture mode
Shows the selected mode in the PICTURE menu.
Resolution
Shows the...

Maintenance 53
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...

Maintenance 54
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:
Total (equivalent) lamp hour
= 1 (hours used in Economic mode) + 4/3 (hours used in normal mode)
See Setting Lamp Mode as Economic below for more information on Economic mode.
The lamp hour in Economic mode is calculated as 3/4 of that in normal mode....

Maintenance 55
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.
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. If the Lamp or Temp indicator 
still lights up after...

Maintenance 56
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 57 5. Lift the handle so that it stands up. 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 
components inside, it could cause color 
unevenness and distortion of...

Maintenance 5811. Restart the projector.
Do not turn the power on with the lamp cover removed. 
Resetting the lamp timer
12. After the startup logo, open the On-Screen 
Display (OSD) menu. Go to the SYSTEM 
SETUP: Advanced > Lamp Settings menu. 
Press Mode/enter on the projector or ENTER 
on the remote control. The Lamp Settings 
page displays. Highlight Reset Lamp Timer. A 
warning message displays asking if you want 
to reset the lamp timer. Highlight Reset and 
press Mode/enter on the projector or...

Maintenance 59
Indicators
LightStatus & Description
PowerTe m pLamp
Power events
Orange Orange OrangeThe projector has just been connected to a power outlet or the 
lamp door is open.
Orange Off OffStand-by mode.
Green
FlashingOff OffPowering up.
Green Off OffNormal operation.
Orange
FlashingOff Off
1. The projector needs 90 seconds to cool down as it was 
abnormally shut down without the normal cooling down 
process. Or
2. The projector needs to cool for 90 seconds after the 
power is turned off....

Troubleshooting 60
Troubleshooting
The projector does not turn on.
No picture
Blurred image
Remote control does not work
The password is incorrect
CauseRemedy
There is no power from the power 
cable.Plug the power cord into the AC inlet on the 
projector, and plug the power cord into the 
power outlet. If the power outlet has a switch, 
make sure that it is switched on.
Attempting to turn the projector on 
again during the cooling process.Wait until the cooling down process has 
completed.
CauseRemedy...