Edimax PS-1210MFn Manual page 140

6. When I use LPR, IPP or RAW printing, the printing jobs are not
able to print to the MFP or printer.
Check if the MFP is "Idle" but not being connected. Printing
from all PC connected to MFP server will be performed when
the MFP Server is not being connected. The printing jobs are
been queuing in the Windows spooler when there is a PC
which is under connected with MFP Server.
Disable "Bi-Directional Support". Please follow the steps
below.
1. Right click the printer from "Printer and Faxes" in the
Windows.
2. Select "Properties" and select "Ports".
3. Uncheck the "Enable bidirectional support ".
Check if the MFP you are using is in the "Compatibility List"
in Appendix or contact your dealer.
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