BenQ IL5501 55" SmInteractive Signage Display - Manual (Page 71)

Troubleshooting 71
Troubleshooting
Problem Solution
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?
• Have you chosen an unsupported output resolution on
the DVD or Blu-ray disc player?
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?
• Use the Auto function (VGA only) to let the display
automatically optimize the display of computer image.
• If the result of the Auto function is not satisfactory, use
the Phase , H Position and V Position functions to
manually adjust the image.
The control panel
buttons do not work
Have you locked the control panel buttons? Unlock the
buttons and try again.
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.