BenQ Projector HT2050 User Manual

  51
  Maintenance
8. 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 distortion of the projected 
images.
9. As shown...

52 Maintenance  
Indicators
There are three indicators which show the status of the projector. Check the following information 
about the indicator lights. If there is anything wrong, turn the projector off and contact your dealer. 15. Connect the power and restart the projector.
16. After the startup logo displays, reset the lamp timer via the OSD menu.
• Under the Advanced OSD menu, go to System Setup : Advanced > Lamp Settings > Reset 
Lamp Timer, and select Reset.
• Under the Basic OSD menu, if...

  53
  Maintenance Red
FlashingRed Off
Fan 5 error (the actual fan speed is ±25% outside the desired 
speed)
Red
FlashingRed
FlashingOffFan 6 error (the actual fan speed is ±25% outside the desired 
speed)
Red
FlashingGreen OffFan 7 error (the actual fan speed is ±25% outside the desired 
speed)
Red
FlashingGreen
FlashingOffFan 8 error (the actual fan speed is ±25% outside the desired 
speed)
Green Red OffTemperature 1 error (over limited temperature)
GreenRed 
FlashingOffThermal sensor 1 open error...

54 Maintenance  
Troubleshooting
ProblemCauseRemedy
The projector does 
not turn on.There is no power from the power 
cable.Plug the power cable into the AC inlet on the 
rear of the projector, and plug the power 
cable into to 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.
The lamp cover is not securely 
attached.Correctly attach the lamp...

  55
  Maintenance
Specifications
Projector specifications
All specifications are subject to change without notice. 
Optical
Resolution
1920 (H) x 1080 (V)
Display system
Single-chip DLP
™ system
Lens F/Number
F = 2.59 to 2.87, f = 16.88 to 21.88 mm 
Lamp
240 W lamp
Electrical
Power supply
AC100–240V, 3.5 A, 50-60 Hz (Automatic)
Power consumption
375 W (Max); < 0.5 W (Standby)
Mechanical
Weight  
3.2 Kg (7.05 lbs) 
Output terminals
Speaker
(Stereo) 5 watt x 1
Audio signal output
PC audio jack x 1...

56 Maintenance  
Dimensions
311.87 mm x 244.12 mm x 104 mm (W x D x H)
Ceiling mount installation
Unit: mm 244.12311.87
104
46/11
285.96113.37142.1
172.23
380.49
537.9 577.7
35
132.9
630.44
53.9160 122.1447
Ceiling mount screws: M4 
(Max. L = 25 mm; Min. L= 20 mm)
Unit: mm 

  57
  Maintenance
Timing chart
Supported timing for PC input
FormatResolutionRefresh rate 
(Hz)H. Frequency 
(KHz)Pixel 
Frequency 
(MHz)
720 x 400 720 x 400_70 70.087 31.469 28.3221
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 43.269  36.000 
800 x 600SVGA_60* 60.317 37.879  40.000 
SVGA_72 72.188 48.077  50.000 
SVGA_75 75.000 46.875  49.500 
SVGA_85 85.061 53.674  56.250 
SVGA_120** 
(Reduce Blanking)119.854 77.425 83.000
1024 x...

58 Maintenance   *Supported timing for 3D signal with Frame Sequential, Top-Bottom and Side-by-Side format.
**Supported timing for 3D signal with Frame Sequential format.
***Supported timing for 3D signal with Top-Bottom and Side-by-Side format.
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.1280 x 1024SXGA_60*** 60.020 63.981 108.000 
SXGA_75 75.025 79.976 135.000
SXGA_85 85.024 91.146 157.500
1280 x...

  59
  Maintenance
Supported timing for HDMI (HDCP) input
FormatResolutionRefresh rate 
(Hz)H. 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 43.269 36.000 
720 x 400 720 x 400_70 70.087 31.469 28.3221
800 x 600SVGA_60* 60.317 37.879 40.000 
SVGA_72 72.188 48.077 50.000 
SVGA_75 75.000 46.875 49.500 
SVGA_85 85.061 53.674 56.250 
SVGA_120** 
(Reduce Blanking)119.854 77.425 83.000
1024 x 768XGA_60*...

60 Maintenance   *Supported timing for 3D signal with Frame Sequential, Top-Bottom and Side-by-Side format.
**Supported timing for 3D signal with Frame Sequential format.
***Supported timing for 3D signal with Top-Bottom and Side-by-Side format.
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.1280 x 9601280 x 960_60*** 60.000 60.000 108
1280 x 960_85 85.002 85.938 148.500
1360 x 768 1360 x 768_60***...