BenQ Mx819st Users Manual

Maintenance 51 14. Connect the power and restart the projector.
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...

Maintenance 52
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 abort)
Red Red OffLAN download fail
Red Green OffLAN download processing
Green Off OffBurn-in ON
Green Green GreenBurn-in OFF
Lamp events
Off Off RedLamp1 error in normal operation
Off OffRed...

Troubleshooting 53
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 54
Specifications
Projector specifications
All specifications are subject to change without notice.
Optical
Resolution
(MX819ST/TS819ST)
1024 x 768 XGA
(MW820ST/TW820ST)
1280 x 800 WXGA
Display system
1-CHIP DMD
Lens F/Number
F = 2.6
Lamp
190 W lamp
Electrical
Power supply
AC100–240V, 2.8 A, 50-60 Hz (Automatic)
Power consumption
280 W (Max); < 0.5 W (Standby)
Mechanical
Weight
2.6 Kg (5.73 lbs)
Output terminals
RGB output
D-Sub 15-pin (female) x 1
Speaker
(Stereo) 10 watt x 1
Audio signal...

Specifications 55
Dimensions
Ceiling mount installation
232.6
114.4
6262
Unit: mm 287.3
625.6
577.7
537.9
83.39
142.89241.35 127.74 68.27285.78
25
77
76.5
127.7
199.6 8
Ceiling Mount screw: M4
(Max L = 25 mm; Min L = 20 mm)
Unit: mm
Downloaded From projector-manual.com BenQ Manuals 

Specifications 56
Wall mount installation
Minimum installation requirements
Computer 
Resolution: 
XGA 
Image 
Resolution: 
XGA
Diagram 
ReferenceSMART 
Board 
660Smart 
Board 
680Promethean 
ActivBoard 
164Promethean 
ActivBoard 
178RM 
ClassBoard2 
77.5Hitachi 
StarBoard 
FX-63StarBoard 
FX-77
Image 
Diagonal 
(inches)D6477 64 78 78 63 77
Image 
Height 
(mm)H 975 1173 975 1189 1181 960 1173
Image 
Width 
(mm)W 1300 1565 1300 1585 1575 1280 1565
Distance 
from floor 
to bottom 
of image 
(mm)
f 900 900...

Specifications 57
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)H 1171 1171 1181 1181
Image Width (mm)W 1874 1874 1887 1887
Distance from floor to 
bottom of image (mm)f 900 900 900 900
Distance from screen surface 
to projector lens (mm)a 916 916 926 926
Distance from top case to 
the top of image (mm)b 6.8 6.8 7.5 7.5
Distance from top of wall...

Specifications 58
Minimum Ceiling Height (mm) = f + H + b + 60 + 274+ c
•  The dimensions are based on the BenQ wall mount (P/N: 5J.J4R10.001).
•  All measurements are approximate and may vary from the actual sizes. BenQ recommends that if you 
intend to permanently install the projector, you should physically test the projection size and distance 
using the actual projector in situ before you permanently install it, so as to make allowance for this 
projectors optical characteristics. This will help you...

Specifications 59
Timing chart
Supported timing for PC input
•  *Supported timing for 3D signal with Frame Sequential, Top Bottom and Side by Side formats.
**Supported timing for 3D signal with Frame Sequential format.
***Supported timing for 3D signal with Top Bottom and Side by Side formats.
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...

Specifications 60
•  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 formats.
**Supported timing for 3D signal with Frame Sequential format.
***Supported timing for 3D signal with Top Bottom and Side by Side formats.
•  The timings showing above may not be supported due to EDID...