Yeah, this is a textbook "the CDR put my laser too far out" issue. Open the door, is the laser on the end of its travel? If so, just shove it back a little bit, like 1cm. The system will take it from there.
You can take the system apart and wind it back, or you can just...shove it a bit. Either way works fine. This seems to be an issue with black Duos and CDRs. It's never happened to me on my IFU or Duo R systems.