- 98 -4. Troubleshooting• Common to Windows and Mac OS X• For WindowsUSB Connection ProblemsCause Solution ReferenceAn unsupported USB cable is used. Use a USB 2.0 cable. -A USB hub is used. Directly connect the machine to thecomputer. Connecting a USB Cable(User's Manual)A printer driver is not installedcorrectly.Reinstall the printer driver. Installing a Driver and Softwareto a Computer (User's Manual)Cause Solution ReferenceThe machine is offline. Right-click the [OKI C542 *] icon onthe [Devices and Printers] folder, andthen select [See print jobs] (If theicons are grouped, select [See printjobs] > [OKI C542 *]).* Indicates the driver type. (ex. PCL 6/PS/XPS)In the dialog, select the [Printer] menuand then clear the check of [UsePrinter Offline].-A switch, buffer, extension cable, orUSB hub is used.Directly connect the machine to thecomputer. Connecting a USB Cable(User's Manual)Another printer driver that workswhen connected via a USB interfaceis installed.Remove the other printer driver fromthe computer.-