Challenger 650 DCP problem

[Seraku]

What does the DCP mean and how can I solve it. My captain side FD can't use anymore.

[nantemann]

It's a Display Control Panel Failure.  I'm not sure what caused it.  Here's what the QRH has to say about it.  I would check that all your Displays Reversions are in the right place and all your circuit breakers as well.