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PIXMA MX850 Support
FAQs & troubleshooting

Writing Error/Output Error/Communication Error (Windows)

Content Id: 8200021100


Issue

Cause and solution

The machine is not ready

Check if any lamp on the Operation Panel is lit.

If all the lamps on the Operation Panel are off, press the ON/OFF button to turn on the machine. While the COPY button is flashing, the machine is initializing. Wait until the COPY button stops flashing and remains lit.

If the Alarm lamp is lit orange, an error may have occurred in the machine. For details on how to resolve the error, see [ An Error Message Is Displayed on the LCD ].

Cause and solution

The machine is not connected properly

Make sure that the USB cable is securely plugged into the USB port of the machine and is connected to the computer.

If you are using a relay device such as a USB hub, disconnect it, connect the machine directly to the computer, and try printing again. If printing starts normally, there is a problem with the relay device. Consult the reseller of the relay device for details.
There could also be a problem with the USB cable. Replace the USB cable and try printing again.

When you use the machine over wired LAN, make sure that the machine is connected to the network with a LAN cable and is set up correctly.

Cause and solution

Printer port setting does not match the computer's interface connecting the printer

Check the printer port settings.

* In the following instruction, "XXX" signifies your machine's name.

(1) Log into a user account with administrator privilege.

(2) Click Control Panel, then Printer under Hardware and Sound. In Windows XP, click Control Panel, Printers and Other Hardware, then Printers and Faxes.

In Windows 2000, click Control Panel then Printers.

(3) Right-click the Canon XXX Printer icon, then select Properties.

(4) Click the Ports tab to confirm the port settings.

Make sure that a port named USBnnn (where "n" is a number) with Canon XXX Printer appearing in the Printer column is selected for Print to the following port(s).

If the port setting is not correct, change the port setting according to the interface you are using, or reinstall the MP Drivers.

Caution

When the machine is used over wired LAN, the port name of the machine is displayed as "CNBJNP_xxxxxxxxxxxx".

* "xxxxxxxxxxxx" is the character string generated from the MAC address or a character string specified by the user when setting up the machine.

Cause and solution

MP Drivers are not installed properly

The MP Drivers may not be installed properly. "How to install the MP drivers "

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