Bench Mx750/mp780st Digital Projector User Manual

Operation 81
FUNCTIONDESCRIPTION
Quick 
Cooling
Selecting On enables the function and the projector cooling time will 
be shortened to a few seconds.
If you attempt to restart the projector right after the quick 
cooling process, it may not be turned on successfully and will 
rerun its cooling fans.
High Altitude 
ModeA mode for operation in high altitude areas. See Operating in a high 
altitude environment on page 45 for details.
Audio 
Settings
Allows you to enter the audio setting menu. See Adjusting...

Operation 82
FUNCTIONDESCRIPTION
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 
Caption
Closed Caption Enable
Activates the function by selecting On when the selected input signal 
carries closed captions.
• Captions: An on-screen display of the dialogue, narration, and 
sound effects of TV programs and videos that are closed captioned...

Operation 83
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 native resolution of the input signal.
Color System
Shows input system format, NTSC, PAL, SECAM, or RGB.
Equivalent Lamp Hour
Displays the number of hours the lamp has been used.
Firmware Version
Shows firmware...

Maintenance 84
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 85
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 86
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 Indicators on page 90 for details.
The following lamp warning displays will remind you to change the lamp.
The...

Maintenance 87
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 883. 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 and...

Maintenance 89 11. 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 highlight Reset 
lamp timer and press MODE/ENTER. A 
warning message displays asking if you want to reset the lamp timer. Highlight Reset 
and press MODE/ENTER. The lamp time will be reset to 0.
Do...

Maintenance 90
Indicators
LightStatus & Description
POWERTEMPLAMP
Power events
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. Or
3. The projector has shutdown automatically. If you try to 
re-start the projector, it will shutdown again....