BenQ Projector MX852UST+ User Manual

							Maintenance71
10. Restart the projector.
Do not turn the power on with the lamp cover removed.
Resetting the lamp timer
11. 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. Highlight Reset 
lamp timer. 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 not reset if the lamp is not new or replaced as this could cause damage.  7. Tighten the screws that secure 
the lamp.
8. Ensure the handle is fully laid flat 
and locked in place.
•  Loose screw may cause a bad 
connection, which could result in 
malfunction.
•  Do not over tighten the screw.
9. Replace the lamp compartment 
cover on the projector
and 
tighten the screw. 
						

							Maintenance 72
Cleaning the projector mirror 
Remove dust with a “Bellows/Lens Blower” readily available from Camera 
shops to prevent scratching the mirror when subsequently wiped.
•  Always turn the projector off and allow to cool for at least 30 
minutesprior to cleaning.
•  Never touch the projector mirror or Lens directly by hand. 
						

							Maintenance73
Indicators 
LightStatus & Description
Pow e rTe m pLamp
Pow e r  ev e n t s
Orange Off OffStand-by mode
Green
FlashingOff OffPowering up
Green Off OffNormal operation
Orange
FlashingOff OffProjector is cooling.
Lamp events
Off Off Orange 
FlashingThe lamp ignition is not lit up.
Off Off Red
1. The projector needs 90 seconds to cool down. 
Or
2. Please contact your dealer for assistance.
Thermal events
Red Red Red
The fans are not 
working.The projector has shutdown 
automatically. If you try to re-start 
the projector, it will shutdown again. 
Please contact your dealer for 
assistance.Red Red Off
Red Red Orange
Red Red Green
Green Orange Off
The internal temperature is too high.
•  The intake ventilation or the exhaust ventilation 
is blocked.
•  The projector may be in a poorly ventilated 
location.
•  The ambient temperature may be too high. Green Orange Red
Green Orange Orange
Green Orange Green
Green Red Red
System events
Green Off Red
The projector has shutdown automatically. If you try to re-
start the projector, it will shutdown again. Please contact 
your dealer for assistance.Red 
FlashingOff Off
Red Off Red
Off Green Red
Lamp door is open. Please check if the lamp door is open or 
not closed properly. 
						

							Troubleshooting 74
Troubleshooting
The projector does not turn on. 
No picture 
Blurred image 
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
The video source is not turned 
on or connected correctly.Turn the video source on and check that 
the signal cable is connected correctly.
The projector is not correctly 
connected to the input signal 
device.Check the connection.
The input signal has not been 
correctly selected.Select the correct input signal with the 
SOURCE key on the projector or 
remote control.
CauseRemedy
The projection lens is not 
correctly focused.Adjust the focus of the lens using the 
focus ring.
The projector and the screen are 
not aligned properly.Adjust the projection angle and 
direction as well as the height of the 
unit if necessary. 
						

							Troubleshooting75
Remote control does not work 
The password is incorrect 
CauseRemedy
The battery is out of power. Replace the battery with new one.
There is an obstacle between the 
remote control and the 
projector.Remove the obstacle.
You are too far away from the 
projector.Stand within 7 meters (23 feet) of the 
projector.
CauseRemedy
You do not remember the 
password.Please see Entering the password recall 
procedure on page 33 for details. 
						

							Specifications
76
Specifications
Projector specifications
All specifications are subject to change without notice. 
Optical
Resolution
MX852UST+ 1024 x 768 XGA
MW853UST+ 1280 x 800 WXGA
Display system Single-chip DLP™ system
Lens F/Number F = 2.5, f = 5.1 mm
Clear focus range 0.28m~0.45m (from IO to screen) 
Lamp 230W lamp
Electrical
Power supplyAC100-240V, 3.5A
50-60 Hz (Automatic)
Power consumption 320W (Max); < 0.5W (Standby)
Mechanical
Weight11 lbs (5 Kg)
Output terminals
Speaker10 watt x 2
Audio signal output PC audio jack x 1
Monitor Out D-Sub 15-pin (female) x1
Control
USB Type-B mini USB 
(Optional for PointWrite kit)
Type-A power supply 5V /1A 
(Optional for PointWrite Touch module)
RS-232 serial control9 pin x 1
IR receiver x 1
LAN control RJ45 x 1
Input terminals
Computer inputRGB inputD-Sub 15-pin (female) x 2
Video signal input S-VIDEOMini DIN 4-pin port x 1
VIDEO RCA jack x 1
SD/HDTV signal input Analog-Component RCA jack x 3
(through RGB input)
Digital - HDMI x 2
Audio signal input Audio inPC audio jack x 1
RCA audio jack (L/R) x 1
Environmental Requirements
Operating temperature 0°C–40°C at sea level
Operating relative humidity 10%–90% (without condensation)
Operating altitude 0–1499 m at 0°C–35°C
1500–3000 m at 0°C–30°C 
(with High Altitude Mode on) 
						

							Specifications77
Timing chart
Supported timing for PC input
ResolutionFormatRefresh rate 
(Hz)H- frequency 
(kHz)Pixel Frequency 
(MHz)
720 x 400 720 x 400_70 70.087 31.469 28.3221
640 x 480 VGA_60* 59.94 31.469 25.175
VGA_72 72.809 37.861 31.5
VGA_75 75 37.5 31.5
VGA_85 85.008 43.269 36
800 x 600 SVGA_60* 60.317 37.879 40
SVGA_72 72.188 48.077 50
SVGA_75 75 46.875 49.5
SVGA_85 85.061 53.674 56.25
SVGA_120** 
(Reduce Blanking) 119.854 77.425 83
1024 x 768 XGA_60* 60.004 48.363 65
XGA_70 70.069 56.476 75
XGA_75 75.029 60.023 78.75
XGA_85 84.997 68.667 94.5
XGA_120** 
(Reduce Blanking) 119.989 97.551 115.5
1152 x 864 1152 x 864_75 75 67.5 108
1024 x 576 BenQ Notebook 
Timing 60 35.82 46.966
1024 x 600 BenQ Notebook 
Timing 64.995 41.467 51.419
1280 x 720 1280 x 720_60* 60 45 74.25
1280 x 768 1280 x 768_60* 59.87 47.776 79.5
1280 x 800 WXGA_60* 59.81 49.702 83.5
WXGA_75 74.934 62.795 106.5
WXGA_85 84.88 71.554 122.5
WXGA_120** 
(Reduce Blanking) 119.909 101.563 146.25 
						

							Specifications
78
* Supported timing for 3D signal wit h Frame Sequential, Top-Bottom and 
Side-by-Side format.
** Supported timing for 3D signal with Frame Sequential format.
*** Supported timing for 3D signal with Top-Bottom and Side-by-Side format.
•  The timings showing above may not  be supported due to EDID file and 
VGA graphic card limitations. It is possible that some timings cannot be 
chosen.
1280 x 1024
SXGA_60*** 60.02 63.981 108
SXGA_75 75.025 79.976 135
SXGA_85 85.024 91.146 157.5
1280 x 960 1280 x 960_60*** 60 60 108
1280 x 960_85 85.002 85.938 148.5
1360 x 768 1360 x 768_60*** 60.015 47.712 85.5
1440 x 900 WXGA+_60*** 59.887 55.935 106.5
1400 x 1050 SXGA+_60*** 59.978 65.317 121.75
1600 x 1200 UXGA*** 60 75 162
1680 x 1050 1680 x 1050_60*** 59.954 65.29 146.25 640 x 480 @67Hz MAC13 66.667 35
30.24
832 x 624  @75Hz MAC16 74.546 49.722 57.28
1024 x 768  @75Hz MAC19 74.93 60.241 80
1152 x 870  @75Hz MAC21 75.06 68.68 100
ResolutionFormatRefresh rate 
(Hz)H- frequency 
(kHz)Pixel Frequency 
(MHz) 
						

							Specifications79
Support timing for Component - YPbPr input 
* Supported timing for 3D signal with Frame Sequential format.
Support timing for Video input
* Supported timing for 3D signal with Frame Sequential format.
Format Resolution Refresh rate 
(Hz)H- frequency 
(kHz) Pixel Frequency 
(MHz)
480i* 720 x 480 59.94 15.73 13.5
480p* 720 x 480 59.94 31.47 27
576i 720 x 576 50 15.63 13.5
576p 720 x 576 50 31.25 27
720/50p 1280 x 720 50 37.5 74.25
720/60p* 1280 x 720 60 45 74.25
1080/50i 1920 x 1080 50 28.13 74.25
1080/60i 1920 x 1080 60 33.75 74.25
1080/24p 1920 x 1080 24 27 74.25
1080/25p 1920 x 1080 25 28.13 74.25
1080/30p 1920 x 1080 30 33.75 74.25
1080/50p 1920 x 1080 50 56.25 148.5
1080/60p 1920 x 1080 60 67.5 148.5
Format Resolution Refresh rate  (Hz)H- frequency 
(kHz) Pixel Frequency 
(MHz)
NTSC* - 60 15.73 3.58 PAL -50 15.63 4.43
SECAM -50 15.63 4.25 or 4.41
PAL-M -60 15.73 3.58
PAL-N -50 15.63 3.58
PAL-60 -60 15.73 4.43
NTSC4.43 -60 15.73 4.43 
						

							Specifications
80
Support timing for HDMI (HDCP) input
Resolution Format Refresh rate 
(Hz) H- frequency 
(kHz) Pixel Frequency 
(MHz)
640 x 480 VGA_60* 59.94 31.469 25.175
VGA_72 72.809 37.861 31.5
VGA_75 75 37.5 31.5
VGA_85 85.008 43.269 36
720 x 400 720 x 400_70 70.087 31.469 28.3221
800 x 600 SVGA_60* 60.317 37.879 40
SVGA_72 72.188 48.077 50
SVGA_75 75 46.875 49.5
SVGA_85 85.061 53.674 56.25
SVGA_120** 
(Reduce Blanking) 119.854 77.425 83
1024 x 768 XGA_60* 60.004 48.363 65
XGA_70 70.069 56.476 75
XGA_75 75.029 60.023 78.75
XGA_85 84.997 68.667 94.5
XGA_120** 
(Reduce Blanking) 119.989 97.551 115.5
1152 x 864 1152 x 864_75 75 67.5 108
1024 x 576 BenQ Notebook 
Timing 60 35.82 46.996
1024 x 600 BenQ Notebook 
Timing 64.995 41.467 51.419
1280 x 720 1280 x 720_60* 60 4574.25
1280 x 768 1280 x 768_60* 59.87 47.776 79.5
1280 x 800 WXGA_60* 59.81 49.702 83.5
WXGA_75 74.934 62.795 106.5
WXGA_85 84.88 71.554 122.5
WXGA_120** 
(Reduce Blanking) 119.909 101.563 146.25