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Nathan, Engineer
Category: Printers
Satisfied Customers: 28988
Experience:  Computer networking/repair. 20+ years experience printer repair
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HP Photosmart 7520 eAll in One When I turn it on it shhows a

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HP Photosmart 7520 eAll in One
When I turn it on it shhows a 'Problem Message and tells me to turn the printer off abd on again. But this does not resolve the problem. the four lights on the corners of the screen flash continually

Hi, I'm Nathan.
Sorry to hear that you're having trouble with this but I'll do my best to help you.

Hello Howell,

does it give you a specific error code/number, such as 0xc19a0022 for example?

Customer: replied 1 year ago.
No it doesn't it just say thqt there nis a problem and suggets turning the printer off and then back on. but this does not resolve the problem. There are four symbols flashing in each corner of the screen The Symbols are HOME ~ RETURN ~ ? ~ X

Thank you for the info, that is unusual though as it should be giving a specific code, or some other info such as "ink system failure" or "printhead incorrect" for example.

Please unplug power to the printer for a few minutes, and let me know if the screen changes after.

Customer: replied 1 year ago.
It has been disconnected for a few months until today and I thought that I would give it another go., and nothing has changed. But it is so difficult to get through to HP

HP support is notoriously poor, and if it is more than a few months old they wouldn't help you anyway. THey only provide support for the first few months after which they charge huge fees for a phone call.

This is a “diffuse” message which simply denotes an internal 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).

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. Then remove the input paper supply.

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. Next remove all of the ink cartridges, then clean the metal electrical contacts on the back, as well as where they mate up inside the printer, using qtips and rubbing alcohol. Dry well, then reseat the cartridges. 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. Next take a piece of heavy paper like card stock and push that through the rollers (feed path) to dislodge any last bits of paper that may be stuck.

Slide the paper guides to the center then back out, fan the front edge of the paper stack, and replace the paper supply.

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.


Customer: replied 1 year ago.
Well i have done all that you said except I could not move the cartridge carriage to remobe the cartridges and clean them but nothing has changed

Thank you for confirming, Howell.
That does tell us then where the failure point is - it is a fault in the carriage drive mechanism. This is a 2012 model printer, and was designed for a maximum service life of 3 years.

This is something that would require repairs to correct; at that point it is time for a new printer. While it can be fixed, it is not practical to do so. You'd be in the $150 range to have it repaired. For $80-100 you can replace the entire machine with a brand new model, with current technology and a fresh warranty, which makes more sense than buying the new parts for an older printer.

Depending how you'd like to proceed, I can help with finding parts, finding a local repair shop, or recommending replacement options for you. Just let me know.

Best regards, ***** ***** for the news,


Customer: replied 1 year ago.
Hi Nathan
Thankyou for your assistance I will dispose of this then and purchase a new one

You're very welcome,

If looking for a replacement, I’d recommend any of the Epson workforce series printers. They tend to be very reliable, are easy to set up and use, have good print quality, and reasonably priced ink. Example: or

Note that these, like all consumer grade inkjet printers, are designed to be low cost and are essentially disposable after a few years, subsidized by the high cost of ink cartridges. If you wish to have a better quality and longer lasting printer, that comes with years worth of ink up front, consider the Epson ecotank models instead:

Alternately, for a more business/commercial grade product that will be rated for a 5 year life, consider a laser printer. Lasers cost more up front also, but a toner cartridge can last for thousands of pages. A black only all in one laser is around $125:

while a color model is about twice that:

If you have any other questions, just let me know. Otherwise, please take a moment to rate my service as this is the only way I am credited for my time. Hopefully I have earned 5 Stars but if not please let me know what I can do to ensure you are satisfied. I also invite you to contact me directly with any future support needs at and ask for Nathan.

Thank you, ***** ***** a nice day,


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