BenQ Projector MX704 User Manual

Maintenance 51
Maintenance
Care of the projector
Your projector needs little maintenance. The only thing you need to do on a regular basis 
is to keep the lens and case clean.
Never remove any parts of the projector. Contact your dealer if other parts need 
replacing.
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the surface. Please be sure to turn off 
the projector and let it cool down completely before cleaning the lens.
•  Use a canister of compressed air to remove dust. 
•  If...

Maintenance
52
Lamp information
Getting to know the lamp hour
When the projector is in operation, the durati on (in hours) of lamp usage is automatically 
calculated by the built-in timer.  The method of  calculating the equivalent lamp hour is as 
follows:
Lamp Usage Time = (hours used in  Normal mode) + (hours used in  Economic mode) + 
(hours used in  SmartEco mode) + (hours used in LampSave  mode)
Total (equivalent) lamp hour = 2.50 x (hours used in  Normal mode) + 1.875 x (hours 
used in Economic...

Maintenance 53
Timing of replacing the lamp
When the Lamp indicator lights up red or a message appears suggesting it is time to 
replace the lamp, please consult your dealer or go to http://www.BenQ.com before 
installing a new lamp. An old lamp may cause a malfunction in the projector and in some 
instances the lamp may explode. 
The LAMP indicator light and TEMPerature warning light will light up if the lamp becomes too hot. 
Turn the power off and let the projector cool for 45 minutes. If the Lamp or...

Maintenance 54
Replacing the lamp
WA R N I N G :
•  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...

Maintenance 55 14. 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.
WA R N I N G :
•  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...

Maintenance 56
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 OK. 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 OK. The lamp 
time will be reset to “0”.
Do not reset if the lamp is not new or replaced as this could cause damage.  

Maintenance 57
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 FlashingRed 
FlashingRed 
FlashingDownload
Green Off RedCW start fail
Red Flashing Off OffScaler shutdown fail (data abort)
Red Off RedScaler reset fail (video projector only)
Green Off OffBurn-in ON
Green Green GreenBurn-in OFF
Lamp events
Off Off RedLamp1 error in normal operation
Off...

Troubleshooting 58
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 59
Specifications
Projector specifications
All specifications are subject to change without notice.
Optical
Resolution
MX704: 1024 x 768 XGA
MW705: 1280 x 800 WXGA
Display system
1-CHIP DMD
Lens
F = 2.56 ~ 2.68, f = 22.0 ~ 24.1 mm
Clear focus range
MX704: 
2.38
–7.15 m @ Wide, 
2.62–7.87 m @ Tele
MW705: 
2
–6 m @ Wide, 
2.2–6.6 m @ Tele
Lamp
240 W lamp
Electrical
Power supply
AC100–240V, 3.5 A, 50–60 Hz (Automatic)
Power consumption
370 W (Max); < 0.5 W (Standby)
Mechanical
Weight
3.0 Kg...

Specifications 60
Dimensions
331 mm (W) x 129.4 mm (H) x 250.6 mm (D)
Ceiling mount installation
PUSH
331
250.6129.4
Unit: mm
127.7
635.92
100.57
577.7
537.9
8199.6
77
116.99
156.37
330.98
76.5 40.49
Ceiling Mount screw: M4 (Max L = 25 mm; Min L = 20 mm)
Unit: mm