BenQ Projector MX768 User Manual

Operation81
FUNCTIONDESCRIPTION
Standby 
Settings
Network
Selecting On enables the function, and the projector can be 
monitored or controlled over a network when it is in standby mode.   
Microphone
Selecting On enables the function, and the microphone can be used 
even in standby mode 
Monitor Out
Selecting On enables the function. The projector can output a VGA 
signal when it is in standby mode and the COMPUTER 1 and 
MONITOR OUT jacks are correctly connected to devices. See 
Connecting a monitor on...

Operation 82
FUNCTIONDESCRIPTION
Network 
Settings
AMX Device Discovery
Selecting 
On the projector can be detected by AMX controller.
Mac Address
Show Mac address.
Reset All 
Settings
Returns all settings to the factory preset values.
The following settings will still remain: User 1, User 2, Projector 
Position, Color Space Conversion, High Altitude Mode, Security 
Settings, Baud Rate and Network Settings
Current 
System 
Status
Source
Shows the current signal source.
Picture Mode
Shows the selected...

Maintenance 83
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. 
• 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...

Maintenance
84
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 eco function as Economic or SmartEco mode below for more 
information on Economic mode.
The lamp hour in Economic mode is calculated as...

Maintenance 85 presentation, select Disable. The projector will not automatically shut down in a certain 
time period.
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. See...

Maintenance
86
Replacing the lamp
• Hg - Lamp contains mercury. Manage in accordance with local disposal laws. See 
www.lamprecycle.org.
• 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...

Maintenance 87 3. Remove the lamp cover by (a) sliding 
the cover toward the side of the 
projector and (b) lifting it off.
• Do not turn the power on with the lamp 
cover removed.
• Do not insert your fingers between the 
lamp and the projector. The sharp edges 
inside the projector may cause injuries.
4. Loosen the screws that secure the 
lamp.
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...

Maintenance
8811. 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. The Lamp Settings 
page displays. Press   to select Reset Lamp 
Timer and press MODE/ENTER. A warning 
message displays asking if you want to reset the lamp timer. Select Yes and press 
MODE/ENTER. The lamp time will be reset to 0.
Do not reset...

Maintenance 89
Indicators
LightStatus & DescriptionPOWERTEMPLAMP1LAMP2
Pow e r  ev e n t s
Orange Off Off OffStand-by
Green
FlashingOff Off OffPowering up
Green Off Off OffNormal operation
Orange
FlashingOff Off OffNormal power-down cooling
Red Off Off OffDownload
Green Off Red OffCW start fail
Red 
FlashingOff Off OffScaler shutdown fail (data abord)
Red Off Red OffScaler reset fail (video projector only)
Off Red Off OffLAN download fail
Off Green Off OffLAN download processing
Burn-in message
Green Off...

Maintenance
90
Green
FlashingRed Off OffTemperature 2 error (over limited temperature)
Green
FlashingRed 
FlashingOff OffThermal Sensor 2 open error
Green
FlashingGreen Off OffThermal Sensor 2 short error
Green
FlashingGreen
FlashingOff OffThermal IC #2 I2C Connection error