BenQ Projector MH741 User Manual

Maintenance61
5. Loosen the two captive screws that 
secure the lamp.
• 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.
6. 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...

Maintenance 62
12. Restart the projector.
Do not turn the power on with the lamp cover removed.
Resetting the lamp timer
13. 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...

Maintenance63
Indicators 
LightStatus & Description
Pow e rTe m pLamp
Pow e r  ev e n t s
Orange Off OffStand-by mode
Green
FlashingOff Off
Powering up
Green Off OffNormal operation
Orange
FlashingOff Off
Projector is cooling.
Lamp events
Off Off Orange 
FlashingThe lamp ignition is not lit up.
Off Off Red1. The projector needs 90 seconds to cool down. Or
2. Please contact your dealer for assistance.
Thermal events
Red Red Off
The fans are not 
working.The projector has shutdown 
automatically. If you...

Troubleshooting 64
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....

Specifications65
Specifications
Projector specifications
All specifications are subject to change without notice. 
Optical
Resolution
MH741
1920 x 1080
Display system
Single-chip DLP™ system
Lens F/Number
F=2.59 to 2.91, f=16.87 to 21.87mm
Lamp
260W lamp
Electrical
Power supply
AC100-240V
50-60 Hz (Automatic)
3.5A
Power consumption
350W (Max); < 0.5W (Standby)
Mechanical
Weight
7.28 lbs (3.3 Kg)
Output terminals
Speaker
(Mono) 10 watt x 1
Audio signal output
PC audio jack x 1
Monitor Out
D-Sub 15-pin...

Specifications 66
Dimensions
314.2 mm (W) x 116 mm (H) x 216.3 mm (D)
314.2
216.3314.2
51.2116.065.2
45.6
76.0 109.0 71.090.5
537.9577.7636.9
81.8
314.2216.3
Ceiling Mount Installation*Ceiling Mount Screws:
  M4 (Max. L=25, Min. L=20)Unit: mm 

Specifications67
Timing chart
Supported timing for PC input 
Resolution ModeRefresh
rate
(Hz)H-
frequency
(kHz)Clock
(MHz)3D Field
Sequential3D
over-
under3D
side-
by-side
800 x 600 640 x 480720 x 400
1024 x 768
1152 x 864
1024 x 576
1024 x 600
1280 x 720
1280 x 768
1280 x 800
1280 x 1024VGA_60
VGA_72
VGA_75
VGA_85 720 x 400_70
SVGA_60
SVGA_72
SVGA_75
SVGA_85
XGA_60
XGA_70
XGA_75
XGA_85
1152 x 864_75
BenQ NB Timing
BenQ NB Timing
1280 x 720_60
1280 x 768_60
WXGA_60
WXGA_75
WXGA_85
SXGA_60
SXGA_75
SXGA_85...

Specifications 68
There 3D timing showing depend the EDID file and VGA display card. It is possible that user 
cannot choose the above 3D timings on VGA display card.
Resolution ModeRefresh
rate
(Hz)H-
frequency
(kHz)Clock
(MHz)3D Field
Sequential3D
over-
under3D
side-
by-side
1280 x 960
1360 x 768
1440 x 900
1400 x 10501280 x 960_60
1280 x 960_85
1360 x 768_60
WXGA+_60
SXGA+_60
UXGA60.000
85.002
60.015
59.887
59.97860.000
85.938
47.712
55.935
65.317108
148.500
85.500
106.500
121.750
ÖÖ
ÖÖ
ÖÖ
ÖÖ...

Specifications69
Support timing for Component - YPbPr input 
Timing
480i
480p
576i
576p
720/50p
720/60p
1080/50i
1080/60i
1080/24p
1080/25p
1080/30p
1080/50p
1080/60pResolution
720 x 480
720 x 480
720 x 576
720 x 576
1280 x 720
1280 x 720
1920 x 1080
1920 x 1080
1920 x 1080
1920 x 1080
1920 x 1080
1920 x 1080
1920 x 1080Horizontal
frequency
(KHz)
15.73
31.47
15.63
31.25
37.5
45.00
28.13
33.75
27
28.13
33.75
56.25
67.5Vertical
Frequency
(Hz)
59.94
59.94
50
50
50
60
50
60
24
25
30
50
60Dot Clock
Frequency...

Specifications 70
Support timing for Video and S-Video input 
Support timing for HDMI (HDCP) input 
Video mode 
NTSC 
PAL 
SECAM 
PAL-M 
PAL-N 
PAL-60 
NTSC4.43 Horizontal
frequency
(KHz)
15.73 60 3.58Ö
15.63 50 4.43
15.63 50 4.25 or 4.41
15.73 60 3.58
15.63 50 3.58
15.73 60 4.43
15.73 60 4.43Vertical
Frequency
(Hz)Sub-carrier
Frequency
(MHz)3D Field
Sequential
Resolution ModeRefresh
rate
(Hz)H-
frequency
(kHz)Clock
(MHz)3D Field
Sequential3D
over-
under3D
side-
by-side
640 x 480
720 x 400
800 x 600...