BenQ Interactive Flat Panel T420 Tl550 T650 User Manual

							Product information 51
Main picture
VGA
Sub picture
HD
MI
720p (60Hz)
1080i (50Hz)
1080i (60Hz)
1080p (50Hz)
1080p (60Hz)
640 x 480 @ 60Hz640 x 480 @ 72Hz640 x 480 @ 75Hz720 x 400 @ 70Hz800 x 600 @ 60Hz800 x 600 @ 75Hz1024 x 768 @ 60Hz1024 x 768 @ 75Hz1280 x 768 @ 60Hz1280 x 960 @ 60Hz1280 x 1024 @ 60Hz1360 x 768 @ 60Hz1366 x 768 @ 60Hz 1600 x 1200 @ 60Hz1920 x 1080 @ 60Hz 
						

							Product information 52
 
Main picture
DVI
Sub picture
YPbP
r
576i (50Hz)
480i (60Hz)
480p (60Hz)
576p (50Hz)
720p (50Hz)
720p (60Hz)
1080i (50Hz)
1080i (60Hz)
1080p (50Hz)
1080p (60Hz)
640 x 480 @ 60Hz640 x 480 @ 72Hz640 x 480 @ 75Hz720 x 400 @ 70Hz800 x 600 @ 60Hz800 x 600 @ 75Hz1024 x 768 @ 60Hz1024 x 768 @ 75Hz1280 x 768 @ 60Hz1280 x 960 @ 60Hz1280 x 1024 @ 60Hz1360 x 768 @ 60Hz1366 x 768 @ 60Hz 1600 x 1200 @ 60Hz1920 x 1080 @ 60Hz 
						

							Product information 53
 
Main picture
YPbPr
Sub picture
DVI
640 x 480 @ 60Hz
640 x 480 @ 72Hz
640 x 480 @ 75Hz
720 x 400 @ 70Hz
800 x 600 @ 60Hz
800 x 600 @ 75Hz
1024 x 768 @ 60Hz
1024 x 768 @ 75Hz
1280 x 768 @ 60Hz
1280 x 960 @ 60Hz
1280 x 1024 @ 60Hz
1360 x 768 @ 60Hz
1366 x 768 @ 60Hz 
1600 x 1200 @ 60Hz
1920 x 1080 @ 60Hz
1080p (60Hz)1080p (50Hz)1080i (60Hz)1080i (50Hz)720p (60Hz)720p (50Hz)576p (50Hz)480p (60Hz)480i (60Hz)576i (50Hz) 
						

							Product information 54
  
Main picture
HDMI
Sub picture
YPbPr
576i (50Hz)
480i (60Hz)
480p (60Hz)
576p (50Hz)
720p (50Hz)
720p (60Hz)
1080i (50Hz)
1080i (60Hz)
1080p (50Hz)
1080p (60Hz)
1080p (60Hz)1080p (50Hz)1080i (60Hz)1080i (50Hz)720p (60Hz)720p (50Hz)576p (50Hz)480p (60Hz)480i (60Hz)576i (50Hz) 
						

							Troubleshooting 55
Troubleshooting
ProblemSolution
No picture Check the following:
• Is the display turned on? Check the power indicator of the 
display.
• Is the signal source device turned on? Turn on the device 
and try again.
• Are there any loose cable connections? Make sure that all 
cables are connected firmly.
• Have you chosen an unsupported output resolution on 
the computer? Refer to Supported input signal resolution 
on page 44 to select a supported resolution and try again.
• Have you chosen an unsupported output resolution on 
the DVD or Blu-ray disc player? Refer to Supported input 
signal resolution on page 44 to select a supported 
resolution and try again.
No sound Check the following:
• Have you turned on the mute function on the display or 
the input source device? Turn off the mute function or 
increase the audio volume level and try again.
• Are there any loose cable connections? Make sure that all 
cables are connected firmly.
The computer input 
image looks strange• Have you chosen an unsupported output resolution on 
the computer? Refer to Supported input signal resolution 
on page 44 to select a supported resolution and try again.
• Use the 
Auto Adjustment function (See Auto Adjustment 
on page 36) to let the display automatically optimize the 
display of computer image.
• If the result of the 
Auto Adjustment function is not 
satisfactory, use the 
Clock Frequency, Phase, H Position 
and 
V Position functions to manually adjust the image.
The control panel 
buttons do not workHave you locked the control panel buttons? Unlock the 
buttons and try again. 
						

							Troubleshooting 56
The remote control does 
not work• Have you locked the remote control function? Unlock the 
function and try again.
• Check for incorrect battery orientation.
• Check for dead batteries.
• Check your distance and angle from the display.
• Check whether remote control is properly being pointed 
at the display’s remote control sensor window.
• Check for any obstacle between the remote control and 
the remote control sensor window. 
• Check that the remote control sensor window is not 
under strong fluorescent lighting, or in direct sunlight.
• Check for any devices (computer or personal digital 
assistant, PDA) nearby that transmit infrared signals which 
may cause interference to signal transmission between the 
remote control and the display. Turn off the infrared 
function of these devices.