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Lexmark T656

Lexmark T656

Paper Jams and the Printer Displays a 'Check Duplex' or a '23x' Type Paper Jam Message: Lexmark T650, T652, T654, or X65x Series Printers

What you will see

Paper repeatedly jams whenever the printer tries to print on both sides of the paper (front and back). The printer displays a Paper Jam message. The accompanying numeric error code is somewhere in the range between 230 and 239.


The printer has detected a sheet of paper or other print media jammed in either the back of the printer or in the duplex area.

Clearing the paper jam

The first action is to locate and remove the jammed paper. Use the instructions and images in the table below for assistance in this task.

IMPORTANT! If this print job consisted of more than one page, probably more than one page is stuck inside the printer. Follow all the steps in the table below and confirm that the entire paper path is clear before attempting to print again.

The images in the table below show a Lexmark T652/T654 model printer. However, the directions also apply to the X65x (X651, X652, etc.) multifunction models as well. T650 model printers do not have an internal duplex assembly, as shown in the table below. For T650 models to have duplex capability, a duplex option must be installed. xref_SO4124_xref for directions on how to locate and clear the paper jam on a T650 model.

1Remove the top paper tray (Tray 1) from the printer.
2Look into this area of the printer. Look for a green tab on the right-hand side. Push down on the green tab to lower a large guide.
Click here for larger image.
3Look for any jammed sheets of paper stuck behind the guide. Remove any jammed paper you find.Click here to view example.
4If you cannot locate a sheet of paper jammed behind the guide, open the lower front cover (i.e., the Multipurpose tray), if it is closed.

Open the upper front cover of the printer, then remove the print cartridge. Place the cartridge aside.

Look inside the printer and remove any jammed paper that you find.

6If you still do not see a jammed sheet of paper, go around to the back of the printer. Open the lower rear access cover.
7Look into this area of the printer and locate a green tab along the right-hand side. Push down on this green tab to lower another large guide.
Click here for larger image.
8Look for any jammed sheets of paper stuck behind the guide. Remove any jammed paper that you find.Click here to view example.
9If you cannot locate a sheet of paper jammed here, open the upper rear access cover. Look for any jammed paper and remove it.
The paper may be crumpled up tightly inside the printer, so look closely.

IMPORTANT! If you still cannot find any jammed paper after checking the entire paper path, a timing issue may have occurred with one of the sensors. Power off the printer, then continue with the steps below.

10Close the upper rear cover, then close the lower rear cover.
11Reinstall the print cartridge assembly.
12Close the upper front cover, then close the lower front cover.
13Reinsert the paper tray.
14Press the
button to clear the error and continue printing. Try printing again. If paper continues to jam, see the additional suggestions below.


If you powered off the printer, power it back on. Once the printer returns to the 'ready' status/screen, try printing again. If paper continues to jam, see the additional suggestions below.

If the jamming continues

If paper jam errors continue to occur every time you try to print, clear the jammed paper from the printer and power off the printer. Try the following:

If the error is something other than a duplex (230 - 239) paper jam, use the location described in the error or the Show Areas feature on the printer operator panel to help you locate and clear the jam. If you cannot locate any jammed media anywhere inside the printer, a sensor unit may be failing. This will require a service action to correct the issue. For information on arranging repair service, contact Lexmark Technical Supportor a local authorized service center.

Confirm that the printer is sitting on a sturdy, level surface.

Carefully inspect the inside of the printer, especially the duplex area (see steps 2 and 7 in the table above). Confirm that there are no small pieces of paper crumpled up inside the printer.

Confirm that none of the parts inside the printer appear broken or loose. If any parts do appear damaged, the printer may require a service call to correct the issue. Contact Lexmark Technical Supportfor more information.

Are you printing on plain copy paper? If not, try printing again with plain copy paper. This test will eliminate any special media as part of the cause of the jamming. Perform this test even if the special media has worked in the past.

- IMPORTANT! Certain specialty papers, letterhead stock, light-weight paper, and card stock sheets tend to jam more often in the duplex option. Certain other media types (envelopes, transparencies, as well as any sort of labels) should not be fed through the duplex area at all. For more information on paper types recommended for use with the duplex feature, please refer to the printer's User's Guide.

If none of the suggestions above correct the issue, try printing on only one side of the page. If the printer correctly prints one side of the page, the source of the issue will be somewhere in the duplex area of the printer.


If one-sided pages feed through correctly, you can continue to use the printer like this until service can be performed.

If you need to contact Lexmark

If the issue continues after you have implemented the steps above, or if you need assistance setting up warranty service, please contact Lexmark Technical Support.

When contacting Lexmark for assistance with your printer, please be prepared to describe the problem you are experiencing and any troubleshooting steps already taken. You will also need to know the printer's model/machine type and serial number (SN). This information can be found on labels located under the upper front cover and on the back of the machine. xref_HO3428_xreffor further details.


When calling Lexmark Technical Support, please call from near the printer in case the technician on the phone asks you to perform a troubleshooting task on the printer.


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