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Nathan, Engineer
Category: Printers
Satisfied Customers: 19580
Experience:  Computer networking/repair. 12+ years experience.
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I have a Lexmark pro4000 series and there were several pages

Customer Question

I have a Lexmark pro4000 series and there were several pages that came out all crumpled. The message says printerhead jammed.
Machine is beeping and when I hit OK, I hear paper moving.
How do I open up the printer to remove the jam.
I've opened everything I can find to no avail.
Miles **** ***@******.***
Submitted: 4 months ago.
Category: Printers
Expert:  Nathan replied 4 months ago.

Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.

Sorry to hear you’re having trouble, Mike.

This message indicates a carriage fault. That can be caused by anything from debris/obstruction (paper jam, bent/damaged rails, out of place purge assembly/wiper, or dirty/dislocated encoder strip) to an actual hardware defect (bad sensor or control board, faulty carriage drive motor/gear/belt, bad printhead/carriage pcb). Printhead failures are extremely common with this model, so that is quite likely as well.

What we can try here are some cleaning and reset steps.
First, open up the printer, and check for any internal debris such as scraps of paper, paperclip or staple, etc. Check if you’re able to move the carriage manually, or if it moves on its own when lifting the lid. If it does move, you can proceed with cleaning by blowing out the inside compartment with compressed air and checking carefully on both sides for any obstructions. Then wipe down the encoder strip, which is a clear plastic strip running the width of the printer, that sits just slightly above and behind the carriage.

Then reset the machine:
unplug power at the wall outlet
wait 5 minutes
press and hold the power/on button for 60+ seconds
keep holding while plugging back in, and for another 60 seconds after, then release

Let me know the results, and I’ll advise further if needed.