We have WinXP SP3

We have just installed a new Samsung printer/fax/scanner
unit CLX6210FX on the computer via a network cable.

Our other printer is a SharpAR5316 copier/printer connected
via a USB cable.

When we have it all connected up, the Sharp AR5316 keeps
giving a constant off/on signal to the computer, and its
small icon flashes on & off in the Settings/Printers and
Faxes menu. Additionally the Sharp AR5316 will not work.

Please help, Frank

We have loaded the latest drivers to each printer.