Troubleshooting - BenQ RP550+ User Manual

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
on page 62 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
signal resolution on page 62
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
on page 62 to select a supported resolution and try again.
• Use the Auto Adjustment function
on page 38) 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.
Troubleshooting
Solution
Supported input signal resolution
Supported input
to select a supported
Supported input signal resolution
(See Adjust Screen
65