Instructions for the Lexmark MS510 and MS610 Fuser Replacement
The fusing units in these machines are rated at around 200,000 pages. If they are anything like the E460 fusing assemblies they probably won’t have a problem making it this far. I haven’t replaced one of these yet but on the 460 models about the time you had to replace them was when something was fed through them that shouldn’t or when a customer dug around in the back of them. Anyway, on the page find the  Lexmark MS510 and MS610 Fuser Replacement Procedure along with links to order a fuser if needed.
Error Codes Associated with a Fuser Related issue are Error Codes 121.XX. If you see an error starting with 121 then you will want to be checking the fusing unit for possible issues.
Right Cover Removal
1. Open the front door.
2. Position the printer so that it sits on its left side.
3. Remove the two screws securing the right cover.
4. Release the latches to remove the right cover.
Right cover removal (MS610de)
1. Open the controller board access door.
2. Remove the two screws.
3. Open the front door. Refer back to Right Cover Removal
4. Position the printer so that it sits on its left side.
5. Remove the two screws.
6. Release the latches to remove the right cover.
Dust Cover Removal
1. Press the latches on each side of the dust cover.
2. Remove the dust cover.
Rear Door and Cover Removal
1 Position the printer so that it sits on either its left or right side.
2 Open the rear door at an angle of 45 degrees.
3 Pull the rear door to remove.
4 Remove the two screws securing the rear cover.
5 Press the two latches to release the rear cover.
Left Cover Removal
1. Position the printer so that it sits on its right side.
2. Open the front door.
3. Remove the two screws securing the left cover.
4. Release the latches, and swing the left cover upward to remove.
Top Cover Removal
1. Open the front door.
2. Remove the two screws in front.
3. Remove the two screws at the rear
Redrive Assembly Removal
1. Disconnect the cable JNRW1 from the controller board.
2. Remove the two screws, and then detach the reverse solenoid.
Note: Do not disconnect the reverse solenoid cable from the controller board. Just let it hang there or I believe you can remove the top screw and just loosen the bottom screw enough to move the solenoid out of the way.
3. Remove the six screws securing the redrive assembly.
Lexmark MS510 and MS610 Fuser Replacement
1. Disconnect the cable JEXIT1 from the controller board. The picture doesn’t it show it but you have to disconnect the output bin full sensor at the top of redrive unit from the control board. That is what their talking about in this step. Â
2. Disconnect the two cables. – Circled in Yellow
3. Remove the two screws securing the fuser. – Â Circled in Red
long procedure. Will don’t buy lexmark again
Ridiculous procedure!