HP Color LaserJet 3800 Printer series - Manual (Page 171)

Cannot select the printer from the computer
Cause Solution
The network is not configured correctly for this printer. Use the network software to verify the printer network
configuration, or consult with the network administrator.
The power receptacle is not working correctly. Connect the printer to a different power receptacle.
A message appears that 2-sided printing is not available for the type and size selected
Cause Solution
The selected paper is not supported for automatic 2-sided
printing. Make sure manual 2-sided printing is enabled. See Gaining
access to printer driver settings .
ENWW Printer response problems 157