BenQ Mw814st Digital Projector User Manual

Maintenance 51
Lamp information
Getting to know the lamp hour
When the projector is in operation, the duration (in hours) of lamp usage is automatically 
calculated by the built-in timer. 
See Setting Lamp Mode as Economic below for more information on Economic mode.
To obtain the lamp hour information:
1. Press MENU/EXIT and then press  /  to highlight the SYSTEM SETUP: Advanced 
menu.
2. Press   to highlight Lamp Settings and press MODE/ENTER. The Lamp Settings page 
displays.
3. You will see the...

Maintenance 52
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 install a new lamp or consult your dealer. An old lamp may cause a 
malfunction in the projector and in some instances the lamp may explode. 
Go to http://lamp.benq.com for a replacement lamp.
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....

Maintenance 53
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 5414. Connect the power and restart the projector. 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 
components inside, it could cause color 
unevenness and...

Maintenance 55
Do not turn the power on with the lamp cover removed. 
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...

Maintenance 56
Indicators
LightStatus & Description
Power events
Off Off OrangeStand-by mode.
Off OffGreen
FlashingPowering up.
Off Off GreenNormal operation.
Off OffOrange
Flashing
•  The projector needs 90 seconds to cool down as it was 
abnormally shut down without the normal cooling down 
process.
•  The projector needs to cool for 90 seconds after the power 
is turned off.
•  The projector has shut down automatically. If you try to re-
start the projector, it will shut down again. Please contact...

Troubleshooting 57
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
58
Specifications
Projector specifications
All specifications are subject to change without notice.
Optical
Resolution
1280  x 800 WXGA
Display system 1-CHIP DMD
Lens F/Number F = 2.59
Lamp
220 W lamp
Electrical
Power supplyAC100–240V, 3.3 A, 50-60 Hz (Automatic)
Power consumption 295 W (Max); < 1 W (Standby)
Mechanical
We i g h t
2.7 Kg (5.9 lbs)
Output terminals
RGB outputD-Sub 15-pin (female)  x 1
Speaker (Stereo) 10 watt  x 1
Audio sig nal output
PC audio jack  x 1
Control
RS-232...

Specifications 59
Dimensions
287.3 mm (W) x 114.4 mm (H) x 232.6 mm (D)
Ceiling mount installation
287.3
232.6
114.4
6262
445.95
397.90
364.40
83.38
141.88
232.6 123.0 78
287.3
207.6
77
76.5
34.5
199.6
Ceiling Mount screw: 
M4 x 8 (Max L = 8 mm)
Unit: mm 

Specifications 60
Wall mount installation
Minimum installation requirements
Computer 
Resolution: WXGA 
Image Resolution: 
WXGADiagram 
ReferenceSMART 
Board 
685Promethean 
ActivBoard 
387Hitachi FX-
TRIO-88WHitachi FX-
DUO-88W
Image Diagonal 
(inches)D87 87 88 88
Image Height (mm)H1171 1171 1181 1181
Image Width (mm)W1874 1874 1887 1887
Distance from floor 
to bottom of image 
(mm)f900 900 900 900
Distance from 
screen surface to 
projector lens (mm)a916 916 926 926
Distance from top 
case to the top...