Acer DV650C User Manual page 48

46 Troubleshooting
Troubleshooting
Problem
No picture
No sound
The computer input
image looks strange
The control panel
buttons do not work
Solution
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 35 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 35 to select a
supported resolution and try again.
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.
• Have you chosen an unsupported output resolution on
the computer? Refer to "Supported Input Signal
Resolution" on page 35 to select a supported resolution
and try again.
• Use the Auto Adjustment function (See "Auto
Adjustment" on page 29) 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.
Have you locked the control panel buttons? Unlock the
buttons and try again.