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How to replace the Fuser Assembly for Lexmark MS321

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Unsure how to replace the fuser assembly in your Lexmark MS/MX321? We'll show you step by step how to do this necessary maintenance to keep your unit running smoothly.

The following tutorial is for these models:

Lexmark B2338dw, Lexmark B2442dw, Lexmark B2546dw, Lexmark B2650dw, Lexmark M1242, Lexmark M1246, Lexmark M3250, Lexmark M3350, Lexmark MB2338adw, Lexmark MB2442adwe, Lexmark MB2546adwe, Lexmark MB2650adwe, Lexmark MS321dn, Lexmark MS421dn, Lexmark MS421dw, Lexmark MS521dn, Lexmark MS531dw, Lexmark MS621dn, Lexmark MS622de, Lexmark MS631dw, Lexmark MS632dwe, Lexmark MX321adn, Lexmark MX321adw, Lexmark MX421ade, Lexmark MX521ade, Lexmark MX521de, Lexmark MX522adhe, Lexmark MX532adwe, Lexmark MX622ade, Lexmark MX622adhe, Lexmark MX632adwe, Lexmark XM1242, Lexmark XM1246, Lexmark XM3250, Lexmark XM3350

WHEN DO YOU NEED TO REPLACE THE FUSER ASSEMBLY?

If you're getting error messages, this may indicate it's time to replace the Fuser Assembly. Listed here are all the errors that indicate a problem:

920 Error- Turn off the printer, wait about a minute, and then turn it back on. If the error persists, the fuser unit may need to be reinstalled.

921, 922, or 923 Error- The fuser unit may not be at its ideal temperature. Make sure the printer is in an environment above 16 degrees and that there are no cool breezes near the machine.

121.24 Error- The printer's fuser may never have reached the fuser detection temperature. This may happen if the printer is not connected to a proper voltage outlet.

STEP-BY-STEP GUIDE: REPLACING THE FUSER ASSEMBLY

Prior to starting, it is imperative to remember power off the device and disconnect from its power source at the back.

This step-by-step tutorial will further break down the steps to remove and replace a Fuser Assembly for the Lexmark MS/MX321. Let’s begin!


STEP ONE: REMOVE BOARD SCREW

Remove the screw holding the controller board access cover that is located on the right side of the printer.

STEP ONE: REMOVE BOARD SCREW

STEP TWO: OPEN BOARD DOOR

After removing the screw, open the controller board access door.

STEP TWO: OPEN BOARD DOOR

STEP THREE: DISCONNECT FUSER CABLE

Disconnect the fuser cable from the controller board.

STEP THREE: DISCONNECT FUSER CABLE

STEP FOUR: REMOVE REAR COVER

Remove the rear cover by gently applying pressure up and pulling back the cover.

STEP FOUR: REMOVE REAR COVER

STEP FIVE: DISCONNECT EXIT CABLE

Locate and disconnect the Fuser cable that is connected to the Exit Guide.

STEP FIVE: DISCONNECT EXIT CABLE

STEP SIX: DISCONNECT POWER CABLE

Locate and disconnect the Fuser cable that is connected to Power Supply.

STEP SIX: DISCONNECT POWER CABLE

STEP SEVEN: REMOVE FUSER SCREWS

Remove both screws on the left and right side of Fuser.

STEP SEVEN: REMOVE FUSER SCREWS

STEP EIGHT: REMOVE FUSER

To remove the fuser, carefully slide out from the printer making sure the cable is free.

STEP EIGHT: REMOVE FUSER

STEP NINE: INSERT NEW FUSER

To insert the new Fuser, begin by feeding the fuser cable through the slot.

STEP NINE: INSERT NEW FUSER

STEP TEN: SLIDE IN FUSER

Carefully slide in the fuser by aligning it with the tracks inside the printer.

STEP TEN: SLIDE IN FUSER

STEP ELEVEN: RECONNECT EXIT/POWER

Reconnect the fuser cables to the Exit Guide and Power Supply.

STEP ELEVEN: RECONNECT EXIT/POWER

STEP TWELVE: RECONNECT CONTROLLER CABLE

Reconnect the fuser cable to the Controller Board.

STEP TWELVE: RECONNECT CONTROLLER CABLE

STEP THIRTEEN: CLOSE BOARD DOOR

Once the fuser cable is connected to the Controller Board, the door can be closed.

STEP THIRTEEN: CLOSE BOARD DOOR

STEP FOURTEEN: FASTEN BOARD SCREW

Fasten back the screw from the controller board on the back of the printer.

STEP FOURTEEN: FASTEN BOARD SCREW

STEP FIFTEEN: REPLACE FUSER SCREWS

Replace the right and left screws on the Fuser. Use a screwdriver to tighten screws.

STEP FIFTEEN: REPLACE FUSER SCREWS

STEP SIXTEEN: REINSTALL REAR COVER

Reinstall the rear cover by aligning to bottom tabs from the printer and closing.

STEP SIXTEEN: REINSTALL REAR COVER

ORDER YOUR REPLACEMENT PARTS TODAY!

Congratulations! You’ve learned how to successfully and adequately replace the Fuser Assembly for the Lexmark MS/MX321!

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