If your display stops functioning, try the fix @Denis lists below, or contact an authorized service centre in your region to have your hardware inspected and/or repaired.
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I got exactly same problem today and was about to send it to service after trying all options that pioneer support suggested without any success.
I tried to perform a close visual inspection of the screen and found a tiny dirt or plastic piece stuck on the very bottom of the screen under the plastic frame that covers the screen. I used a vacuum cleaner and soft brush to pick it up. After it was extracted from under the frame calibration started to work and succeeded. The piece was so tiny so I could not find it after.
Like above, search for any small pieces of debris wedged under the frame and attempt to safely remove it. If this doesn't work please contact your nearest service centre.
