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...

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...

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...

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...

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...

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...

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...