Bench Mx750/mp780st Digital Projector User Manual

Troubleshooting 91
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...

Specifications 92
Specifications
All specifications are subject to change without notice. 
Optical
Resolution
(MX750)
1024 x 768 XGA
(MP780 ST)
1280 x 800 WXGA
Display system
1-CHIP DMD
Lens F/Number
(MX750)
F = 2.68 to 3.4, 
f = 15.94 to 25.5 mm
(MP780 ST)
F = 2.89, 
f = 7.78 mm
Lamp
(MX750)
225 W lamp
(MP780 ST)
185 W lamp
Electrical
Power supply
AC100–240V, 3.20 A,
50-60 Hz (Automatic)
Power consumption
(MX750)
300 W (Max.)
(MP780 ST)
260 W (Max.)
Mechanical
We i g h t
(MX750)
3.6 kg (7.9 lbs.)
(MP780...

Specifications 93
Dimensions
329 mm (W) x 137.2 mm (H) x 241.9 mm (D)
Ceiling mount installation
329
241.9
137.2
62.577.4
75.0
221.0
100.00
116.00
82.50
107.7
328.0 163.762.5115.1129.1
100.0
146.0
Ceiling mount screws:
M4 x 8 (Max. L = 8 mm)
Unit: mm 

Specifications 94
Timing chart
Supported timing for PC input
ResolutionHorizontal 
Frequency 
(kHz)Ve r t i ca l  
Frequency 
(Hz)Pixel 
Frequency 
(MHz)Mode
720 x 400 31.469 70.087 28.322 720 x 400_70
640 x 480 31.469 59.940 25.175 VGA_60
37.500 75.000 31.500 VGA_75
43.269 85.008 36.000 VGA_85
800 x 600 37.879 60.317 40.000 SVGA_60
48.077 72.188 50.000 SVGA_72
46.875 75.000 49.500 SVGA_75
53.674 85.061 56.250 SVGA_85
1024 x 768 48.363 60.004 65.000 XGA_60
56.476 70.069 75.000 XGA_70
60.023 75.029 78.750...

Specifications 95
Supported timing for HDMI input
Displaying a 1080i(1125i)@60Hz or 1080i(1125i)@50Hz signal may result in slight image 
vibration.
ResolutionHorizontal 
Frequency 
(kHz)Ve r ti ca l  
Frequency 
(Hz)Pixel 
Frequency 
(MHz)Mode
720 x 400 31.469 70.087 28.322 720 x 400_70
640 x 480 31.469 59.940 25.175 VGA_60 37.861 72.809 31.500 VGA_72
37.500 75.000 31.500 VGA_75
43.269 85.008 36.000 VGA_85
800 x 600 37.879 60.317 40.000 SVGA_60 48.077 72.188 50.000 SVGA_72
46.875 75.000 49.500 SVGA_75...

Specifications 96
Supported timing for Component-YPbPr input
Displaying a 1080i@60Hz or 1080i@50Hz signal may result in slight image vibration.
Supported timing for Video and S-Video inputs
Signal FormatHorizontal Frequency 
(kHz)Vertical Frequency (Hz)
480i(525i)@60Hz 15.73 59.94
480p(525p)@60Hz 31.47 59.94
576i(625i)@50Hz 15.63 50.00
576p(625p)@50Hz 31.25 50.00
720p(750p)@60Hz 45.00 60.00
720p(750p)@50Hz 37.50 50.00
1080i(1125i)@60Hz 33.75 60.00
1080i(1125i)@50Hz 28.13 50.00
1080p@60Hz 67.5 60.00...

Warranty and Copyright information 97
Warranty and Copyright information
Patents for MP780 ST
This BenQ projector is covered by the following patents:
U.S. patents 6,837,608; 7,275,834; 7,181,318; TW patents 202690; 205470; I228635; I259932; 
China Patents (中国发明专利) ZL01143168.7; ZL03119907.0; ZL200510051609.2
Limited warranty
BenQ warrants this product against any defects in material and workmanship, under normal 
usage and storage.
Proof of purchase date will be required with any warranty claim. In the...

Regulation statements 98
Regulation statements
FCC statement
CLASS B: This equipment generates, uses and can radiate radio frequency energy and, if not 
installed and used in accordance with the instructions, may cause harmful interference to 
radio communications. However, there is no guarantee that interference will not occur in a 
particular installation. If this equipment does cause harmful interference to radio or 
television reception, which can be determined by turning the equipment off and on,...

Regulation statements 99
Accessibility Requirements for Rehabilitation Act of 1973, Section
508
BenQ’s commitment to accessible products allows us to support government in making 
accessible technology choices BenQ’s LCD monitors and projectors are compliant with 
Section 508 guidelines by including the assistive features as below:
• BenQ’s monitors have colored “Power” indicators. While the indicator shows green, it means that 
the monitor is using the full power. While the indicator shows yellow or...