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Troubleshooting
Troubleshooting
Problem
No picture
No sound
The computer input
image looks strange
The control panel
buttons do not work
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
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
(RP552H) on page 73
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
to select a supported resolution and try again.
• Use the Auto Adjust function to let the display
automatically optimize the display of computer image.
• If the result of the Auto Adjust function is not
satisfactory, use the Phase, Horizontal Pos. and
Vertical Pos. functions to manually adjust the image.
Have you locked the control panel buttons? Unlock the
buttons and try again.
Solution
Dimensions (RP552H) on page 73
to select a supported resolution and
Dimensions (RP552H) on page 73
Dimensions
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