Chapter 11 193Troubleshooting When an Error is Displayed Regarding Automatic Duplex Printing Error No.: 300 is DisplayedMP Drivers is not installed properly. Uninstall then reinstall the MP Drivers.1. Click [Start], and select [All Programs] (or [Programs]), the name of yourmachine, and [Uninstall].2. Follow the on-screen instructions to uninstall the driver.3. Follow the procedures described in the Easy Setup Instructions andreinstall the MP Drivers.Cause ActionThe correct media size is notselected in the printer driver.Check the Page Size setting from within your application software toensure that it matches the size of the paper loaded.Check [Page Size] on the [Page Setup] tab in the printer properties dialogbox (Windows) or the [Page Setup] dialog box (Macintosh) to ensure that itmatches the size of the paper loaded.The page sizes that can be used for Automatic Duplex Printing are Letter,A4, B5, A5, and 5" x 7" / 127.0 x 177.8 mm. Check that the page size of theloaded paper is correct.NoteTo print on both sides of the page manually, follow the procedure below.On the [Page Setup] tab, clear the [Automatic] check box. Then try printingagain.The manual duplex printing function cannot be used.Cause ActionThe machine is not ready. Ensure that the lamp on the Operation Panel lights.If the lamp on the Operation Panel is off, turn the machine on.While [COPY] is flashing, the machine is initializing. Wait until [COPY]stops flashing and stays lit.When the Alarm Lamp lights orange, an error may occur in the machine.For details on how to resolve the error, see “An Error Message isDisplayed on the LCD” on page 161.Machine is not properly connected. Ensure that the printer cable is securely connected to the computer.z If using a switching hub or other device, disconnect the machine andreconnect it directly to the computer and try printing again. Ifsuccessful, the problem may have been with the device.z There could also be a problem with the cable(s). Replace the cable(s)and try printing again.Cause Action
