BenQ Mx766/mw767/mx822st Digital Projector User Manual

							Maintenance 91 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 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 the 
projected images.
6. Insert the new lamp into the lamp 
comparent and make sure it fits in the 
projector.
(b)
(a) 
						

							Maintenance
9211. 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 not reset if the lamp is not new or replaced as this could cause damage. 
7. Tighten the screws that secure the 
lamp.
• Loose screw may cause a bad connection, 
which could result in malfunction.
• Do not over tighten the screws.
8. Ensure the handle is fully laid flat and 
locked in place.
9. Replace the lamp cover by sliding it 
into place.
10. Tighten the screw that secures the 
lamp cover. 
• Loose screw may cause a bad connection, 
which could result in malfunction.
• Do not over tighten the screw.
(a)
(b) 
						

							Maintenance 93
Indicators
LightStatus & Description
POWERTEMPLAMP
Pow e r  ev e n t s
Orange Off OffStand-by mode
Green
FlashingOff OffPowering up
Green Off OffNormal operation
Orange
FlashingOff OffNormal power-down cooling
Red Off OffDownload
Green Off RedCW start fail
Red
FlashingOff OffScaler shutdown fail (data abord)
Red Off RedScaler reset fail (video projector only)
Off Red OffLAN download fail
Off Green OffLAN download processing
Burn-in message
Green Off OffBurn-in ON
Green Green GreenBurn-in OFF
Lamp events
Off OffRedLamp1 error in normal operation
Off OffRed
FlashingLamp is not lit up
Thermal events
Red Red OffFan 1 error (the actual fan speed is ±25% outside the desired 
speed)
RedRed
FlashingOffFan 2 error (the actual fan speed is ±25% outside the desired 
speed)
Red Green OffFan 3 error (the actual fan speed is ±25% outside the desired 
speed)
Red
FlashingRed
FlashingOffTemperature 1 error (over limited temperature)
GreenRed
FlashingOffThermal Sensor 1 open error
Green Green OffThermal Sensor 1 short error
GreenGreen
FlashingOffThermal IC #1 I2C Connection error
Green
FlashingRed OffTemperature 2 error (over limited temperature) 
						

							Maintenance
94
Green
FlashingRed
FlashingOffThermal Sensor 2 open error
Green
FlashingGreen OffThermal Sensor 2 short error
Green
FlashingGreen
FlashingOffThermal IC #2 I2C Connection error 
						

							Troubleshooting 95
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
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.
The lens cover is still closed. Open the lens cover.
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.
The lens cover is still closed. Open the lens cover.
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 8 meters (26 feet) of the projector.
CauseRemedy
You do not remember the password.Please see "Entering the password recall 
procedure" on page 35 for details. 
						

							Specifications
96
Specifications
All specifications are subject to change without notice
Lamp life results will vary depending on environmental conditions and usage.
Optical
Resolution
(MX766/MX822ST)
1024 x 768 XGA
(MW767)
1280 x 800 WXGA
Display system
1-CHIP DMD
Lens F/Number
(MX766/MW767)
F= 2.42~2.98  
f=  20.77mm~31.13mm
(MX822ST)
F = 2.8 
f = 7.26 mm
Offset
(MX766/MX822ST): 130%
(MW767): 125%
Zoom ratio
(MX766/MW767): 1.5X
(MX822ST): Fixed
Lamp
310 W lamp
Electrical
Power supply
AC100–240V, 4.20 A,
50-60 Hz (Automatic)
Power consumption
420 W (Max.)
Mechanical
We i g h t
3.9 kg (8.6 lbs.)
Output terminals
RGB output
D-Sub 15-pin (female) x 1
Speaker
(Stereo) 20 watt x 1
Audio signal output
PC audio jack x 1
Control
LAN control
Wire (RJ45)
Wireless (USB A type)
Firmware upgrade (USB B type)
Input terminals
Computer input
RGB input
D-Sub 15-pin (female) x 2
Video signal input
S-VIDEO
Mini 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 1
Audio signal input
Audio in
PC audio jack x 1
RCA audio jack (L/R) x 2
Remote desktop /USB reader /document camera 
supported (USB A type)
USB display (USB mini B type)
PD pen compatibility (PD dongle in Jack only for 
MX822ST)
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)
* China region only applies to an altitude of 
2000m. 
						

							Specifications 97
Dimensions
MX766/MW767
329 mm (W) x 137.2 mm (H) x 256.2 mm (D
)
MX822ST
329 mm (W) x 137.2 mm (H) x 246.5 mm (D
)
329
256.2
137.2
62.577.4
329
246.5
137.2
62.577.4 
						

							Specifications
98
Ceiling mount installation
75.0
221.0
100.0
146.0
328.0 163.762.5
127.7
115.1129.1
328.0 163.762.5
577.7625.95
537.9
25
50.71
Ceiling mount screw: M4
(Max L = 25 mm; Min L = 20 mm)
Unit: mm 
						

							Specifications 99
Wall mount installation
Minimum installation requirements
MX822ST
Computer 
Resolution: XGA 
Image 
Resolution: XGA
Diagram 
ReferenceSMART 
Board 
660SMART 
Board 
680Promethean 
ActivBoard 
164Promethean 
ActivBoard 
178RM
CkassBiard2 
77.5Hitachi 
StarBoard 
FX-63StarBoard 
FX-77
Image Diagonal 
(inches)D6477 64 78 78 63 77
Image Height 
(mm)H 975 1173 975 1188 1188 960 1173
Image Width 
(mm)W 1301 1565 1301 1585 1585 1280 1565
Distance from floor 
t o  b o t t o m  o f  i m a g e  
(mm)f 900 900 900 900 900 900 900
Distance from 
screen surface to 
projector front 
case (mm)
a 815 980 815 993 993 802 980
Distance from top 
case to the top of 
image(mm)b 146 176 146 178 178 144 176
Distance from top 
of wall mount to 
ceiling (mm)c5050 50 50 50 50 50
Minimum Ceiling 
Height (mm)e 2393.2 2621.2 2393.2 2638.2 2638.2 2376.2 2621.2 
						

							Specifications
100
Minimum Ceiling Height (mm) = f + H + b + 60 + 262.2+ c
• The dimensions are based on the BenQ wall mount (P/N: 5J.J4R10.001).
• All measurements are approximate and may vary from the actual sizes. BenQ recommends that if 
you intend to permanently install the projector, you should physically test the projection size and 
distance using the actual projector in situ before you permanently install it, so as to make 
allowance for this projector’s optical characteristics. This will help you determine the exact 
mounting position so that it best suits your installation location.
• The dimensions supplied are offered as a guide only and may differ depending on several factors 
relating to any specific installation.
• The dimensions are based on the projector being configured with zero keystone correction.
• The dimensions assume that the wall mount arm is positioned 90° from the bottom case of 
projector and screen surface.
Projection
area
W
e
Distance from floor
to bottom of image f 
Floor Ceiling
HScreen
c
60
a20
60
150
180
Wall plate b
H
D
246.5 262.2