- 130 -6. TroubleshootingPrint ProblemsThis section describes problems with printing from a computer.• If you cannot solve a problem with the following solutions, contact your dealer.• For problems caused by an application, contact the manufacturer of the application.• Unable to Print• Common to Windows and Mac OS X• For WindowsUnable to PrintCause Solution ReferenceThe machine is in Sleep mode orDeep Sleep mode.Press the (POWER SAVE) buttonto enter standby status. Saving Power Consumption withthe Power Save FunctionThe machine is turned off. Turn the machine on. Turning the Machine OnA LAN cable or USB cable isunplugged.Check that the cable is plugged intothe machine and computer properly. Connecting a LAN Cable/USBCableThere may be a problem with acable.Replace the cable with a new cable. -The machine is offline. Press the (PRINT) button, andthen select [Online].-An error message is displayed on thetouch panel.Check the error messages displayedon the touch panel or press [?] on thetouch panel.Error Message ListThe interface setting is disabled. Whether there is a consistency withthe machine's settings and thenetwork connection environment,check the settings of the interfacethat you are using on the operatorpanel.Connecting a LAN Cable/USBCableThere is a problem with the printfunction.Check if the menu map can beprinted. Checking the Information of theMachine (Advanced Manual)The power switch LED lamp quicklyflashes at approximately 0.3-secondintervals.A malfunction may occur in themachine. Unplug the power cordimmediately, and then contact yourdealer.-Cause Solution ReferenceThe machine is not set as the defaultprinter.Set the machine as the defaultprinter.Right-click the [OKI C542 *] icon onthe [Devices and Printers] folder, andthen select [Set as Default Printer].* Indicates the driver type. (ex. PCL6/PS/XPS)-