BenQ Mx722 Users Manual

Maintenance 51
Replacing the lamp
•  To reduce the risk of electrical shock, always turn the projector off and disconnect the power cord before 
changing the lamp.
•  To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing the 
lamp.
•  To reduce the risk of injuries to fingers and damage to internal components, use caution when removing 
lamp glass that has shattered into sharp pieces.
•  To reduce the risk of injuries to fingers and/or compromising image...

Maintenance 5214. Connect the power and restart the projector.
Do not turn the power on with the lamp cover removed. 
7. 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...

Maintenance 53 Resetting the lamp timer
15. 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 is displayed 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. 
Downloaded From projector-manual.com...

Maintenance 54
Indicators
LightStatus & Description
Powe 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 Flashing Off OffScaler shutdown fail (data board)
Red Off RedScaler reset fail (video projector only)
Off Red OffLAN download fail
Off Green OffLAN download processing
Green Off OffBurn-in ON
Green Green GreenBurn-in OFF
Lamp events
Off Off...

Troubleshooting 55
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 cord.Plug the power cord into the AC power jack 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....

Specifications 56
Specifications
Projector specifications
All specifications are subject to change without notice.
Optical
Resolution
1024 x 768 XGA
Display system
1-CHIP DMD
Lens F/Number
F = 2.59-2.87
Lamp
300 W lamp
Electrical
Power supply
AC100–240V, 4.5 A, 50-60 Hz (Automatic)
Power consumption
398 W (Max); < 0.5 W (Standby)
Mechanical
Weight
3.8 Kg (8.4 lbs)
Output terminals
RGB output
D-Sub 15-pin (female) x 1
Speaker
(Stereo) 10 watt x 2
Audio signal output
PC audio jack x 1
Control
RS-232 serial...

Specifications 57
Dimensions
Ceiling mount installation
238
120.5
4250.5
Unit: mm 339
633
25
127.7 577.7
537.9
125.99
176.29
254.29 130.93 71.46228
65.5
84
242.04
338.99Ceiling Mount screw: M4
(Max L = 25 mm; Min L = 20 mm)
Unit: mm
Downloaded From projector-manual.com BenQ Manuals 

Specifications 58
Timing chart
Supported timing for PC input
•  *Supported timing for 3D signal with 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.
ResolutionMode
Ve r t i c a l  
Frequency 
(Hz)Horizontal 
Frequency 
(kHz)Pixel 
Frequency
(MHz)
640 x 480VGA_60* 59.940 31.469 25.175 
VGA_72 72.809 37.861 31.500 
VGA_75 75.000 37.500 31.500 
VGA_85 85.008 43.269...

Specifications 59
•  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.
Supported timing for HDMI (HDCP) input
•  *Supported timing for 3D signal with 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...

Specifications 60
*Supported timing for 3D signal with Frame Sequential format.
**Supported timing for 3D signal with Frame Packing format.
***Supported timing for 3D signal with Side by Side format.
Supported timing for Component-YPbPr input
• *Supported timing for 3D signal with Frame Sequential format.
•  Displaying a 1080i(1125i)@60Hz or 1080i(1125i)@50Hz signal may result in slight image vibration.
TimingResolutionVe r t i c a l  
Frequency 
(Hz)Horizontal 
Frequency 
(kHz)Pixel 
Frequency...