USB Connection Problems

  • Common to Windows and Mac OS X

Cause

Solution

Reference

An unsupported USB cable is used.

Use a USB 2.0 cable.

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A USB hub is used.

Directly connect the machine to the computer.

Connecting via a USB Interface

A printer driver is not installed correctly.

Reinstall the printer driver.

Installing a Driver and Software to a Computer

  • For Windows

Cause

Solution

Reference

[USB Assignment] is set to [IPP].

Press [Device Settings], and then select [AdminSetup] > [Management] > [Local Interface] > [USB Menu] > [USB Assignment] > [Legacy].

Management

The machine is offline.

Right-click the OKI MC873 icon on the [Devices and Printers] folder, and then select [See print jobs] (if multiple drivers are installed, select [OKI MC873(*)]). In the dialog box, select the [Printer] menu and then clear the check of [Use Printer Offline].

* Select the required driver type.

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A switch, buffer, extension cable, or USB hub is used.

Directly connect the machine to the computer.

Connecting via a USB Interface

Another printer driver that works when connected via a USB interface is installed.

Remove the other printer driver from the computer.

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