Troubleshooting - BenQ RP553K User Manual

Troubleshooting

Problem
No picture
No sound
The computer input
image looks strange
The displayed image
looks blurry or grainy
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 54 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 54
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 54 to select a supported resolution and try again.
• Use the Auto Tune function
33) to let the display automatically optimize the display of
computer image.
• If the result of the Auto Tune function is not satisfactory,
use the Clock, Phase, Horizontal Position, and
Vertical Position functions to manually adjust the image.
• Use the Default function
to set the output signal's image resolution match to the
display's native resolution.
• If the result of the Default function is not satisfactory, use
the EDID 1.4 or EDID 2.0 functions to manually adjust
the resolution.
Have you locked the control panel buttons? Refer to the
Keypad Lock function
unlock the buttons and try again.
Troubleshooting
Solution
Supported input signal resolution
Supported input
to select a supported
Supported input signal resolution
(See Picture menu on page
(See Setting menu on page
(See Setting menu on page
55
35)
35) to