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 there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens 
cleaner and gently wipe the lens surface.
•  Never use any type of abrasive pad, alkaline/acid cleaner, scouring powder, or volatile 
solvent, such as alcohol, benzene, thinner or insecticide. Using such materials or 
maintaining prolonged contact with rubber or vinyl materials may result in damage to 
the projector surface and cabinet material.
Cleaning the projector case
Before you clean the case, turn the projector off using the proper shutdown procedure as 
described in Shutting down the projector on page 40 and unplug the power cord.
•  To remove dirt or dust, wipe the case with a soft, lint-free cloth.
•  To remove stubborn dirt or stains, moisten a soft cloth with water and a neutral pH 
detergent. Then wipe the case.
Never use wax, alcohol, benzene, thinner or other chemical detergents. These can damage the case.
Storing the projector
If you need to store the projector for an extended time, please follow the instructions 
below:
•  Make sure the temperature and humidity of the storage area are within the 
recommended range for the projector. Please refer to Specifications on page 59 or 
consult your dealer about the range.
•  Retract the adjuster feet.
•  Remove the battery from the remote control.
•  Pack the projector in its original packing or equivalent.
Transporting the projector
It is recommended that you ship the projector with its original packing or equivalent. 
						

							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  mode) + 1.25 x (hours used in  SmartEco mode) + 1.00 x (hours used 
in  LampSave  mode).
To obtain the lamp hour information:
1. Press  MENU and then press  /  to highlight the  SYSTEM SETUP: Advanced 
menu.
2. Press  to highlight  Lamp Settings and press OK. The  Lamp Settings  page 
appears.
3. You will see the Lamp Timer  information displaying on the menu.
4. To leave the menu, press  MENU.
You can also get the lamp hour information on the  INFORMATION menu.
Extending lamp life
The projection lamp is a consumable item  that normally can last up to 3000–4000 hours 
with proper usage. To keep the lamp life as  long as possible, you can do the following 
settings via the OSD menu.
•  Setting the Lamp Mode
Setting the projector in  Economic, SmartEco  or LampSave  mode extends the lamp 
operation life. To do so, go to the  SYSTEM SETUP: Advanced > Lamp Settings  > 
Lamp Mode  menu and press  / .
•  Setting Auto Power Off
This function allows the projector to turn off  automatically if no input signal is detected 
after a set period of time to prevent unnecessary waste of lamp life.
To  s e t   Auto Power Off , go into the SYSTEM SETUP: Basic  > Operation Settings  
>  Auto Power Off  menu and press  / . If the preset  time lengths are not suitable for 
your presentation, select  Disable. The projector will not automatically shut down in a 
certain time period.
Lamp modeDescription
NormalProvides full lamp brightness
EconomicLowers brightness to extend the  lamp life and decreases the fan 
noise
SmartEcoAdjusts the lamp power automati cally depending on the content 
brightness level
LampSaveAdjusts the lamp power automatically and lowers the brightness to 
extend the lamp life 
						

							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 Temp indicator still lights up after 
turning the power back on, please contact your dealer. See Indicators on page 57 for details.
The following Lamp warning displays will remind you to change the lamp.
XXXX shown in the above messages are numbers that vary depending on different models.
StatusMessage
Install a new lamp for optimal performance. If the 
projector is normally run with Economic 
selected (See Getting to know the lamp hour on 
page 52), you may continue to operate the 
projector until the next hour lamp warning 
appears.
Press OK to dismiss the message.
It is strongly recommended that you replace the 
lamp at this age. The lamp is a consumable item. 
The lamp brightness diminishes with use. This is 
normal lamp behavior. You can replace the lamp 
whenever you notice that the brightness level has 
significantly diminished.
Press OK to dismiss the message.
The lamp MUST be replaced before the projector 
will operate normally.
Press OK to dismiss the message.
Order a replacement lampEquivalent lamp hour >XXXX Hours
Order a new lamp at www.BenQ.com
NOTICE
Replace lamp soonEquivalent lamp hour > XXXX Hours
Order a new lamp at www.BenQ.com
NOTICE
Out of lamp usage timeReplace lamp (Refer to user manual)
Then reset lamp timer
Order a new lamp at www.BenQ.com
NOTICE
Replace lamp now
Equivalent lamp hour > XXXX Hours
Order a new lamp at www.BenQ.com
NOTICE 
						

							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 compromising image quality by touching the lens, do not 
touch the empty lamp compartment when the lamp is removed.
•  This lamp contains mercury. Consult your local hazardous waste regulations to dispose of this lamp in a 
proper manner.
•  To assure optimal performance from the projector, it is recommended that you purchase a qualified 
projector lamp for lamp replacement.
•  If lamp replacement is performed while the projector is suspended upside-down from the ceiling, make 
sure that no one is underneath the lamp socket to avoid any possible injury or damage to the human eyes 
caused by fractured lamp.
•  Ensure good ventilation when handling broken lamps. We recommend that you use respirators, safety 
glasses, goggles or face shield and wear protective clothing such as gloves.
1. Turn the power off and disconnect the projector from the power outlet. If the lamp 
is hot, avoid burns by waiting for approximately 45 minutes until the lamp has 
cooled.
2. Loosen the screw(s) that secure the lamp 
cover on the side of the projector until the 
lamp cover loosens.
3. Remove the lamp cover from the projector.
WA R N I N G :
•  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. Disconnect the lamp connector.
5. Loosen the screw that secures the lamp.
6. Lift the handle so that it stands up.
4
564 
						

							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 the optical components 
inside, it could cause color unevenness and distortion of 
the projected images.
8. As shown in the figure, lower the new lamp.
9. Insert the lamp connector.
10. Tighten the screw that secures the lamp.
11. Ensure the handle is fully laid flat and locked 
in place.
WA R N I N G :
•  Loose screw may cause a bad connection, which could 
result in malfunction.
•  Do not over tighten the screw.
12. Replace the lamp cover on the projector.
13. Tighten the screw(s) that secure the lamp 
cover. 
WA R N I N G :
•  Loose screw may cause a bad connection, which could 
result in malfunction.
•  Do not over tighten the screw.
1011
9 
						

							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 OffOrange 
FlashingLamp is not lit up
Green Off OrangeLamp life exhausted
Off Green RedLamp door is open
Thermal events
Red Red OffFan 1 error (the actual fan speed is outside the 
desired speed)
RedRed 
FlashingOffFan 2 error (the actual fan speed is outside the 
desired speed)
Red Green OffFan 3 error (the actual fan speed is outside the 
desired speed)
RedGreen 
FlashingOffFan 4 error (the actual fan speed is outside the 
desired speed)
Green Red OffTemperature 1 error (over limited temperature) 
						

							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.
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 projector if necessary.
The lens cover is still closed. Open the lens cover.
CauseRemedy
The battery is out of power. Replace the battery with new ones.
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 28 for details. 
						

							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 (6.61 lbs)
Output terminals
RGB output
D-Sub 15-pin (female) x 1
Speaker
(Stereo) 2 watt x 1
Audio signal output
Audio jack x 1
Control
RS-232 serial control
9 pin x 1
IR receiver x 2
Input terminals
Computer input
RGB input
D-Sub 15-pin (female) x 1
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; HDMI/MHL x 1
Audio signal input
Audio in
PC audio jack x 1
RCA audio jack (L/R) x 1
USB ports (Type-A x 1; Mini-B x 1)
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) 
						

							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