HP LaserJet 5000
I have changed the fuser film and pressure roller but the toner does not adhere properly

Experienced technical support provide their insights in answering this question :
Was that the original problem? If not, then it’s possible you put too much grease on the heater assembly. That would act as an insulator. You just need a thin layer on the heater itself. Otherwise, you can adjust the temperatures in the control panel to apply more heat. Another thing to try is to feed from the Manual Feed tray. That will slow the printing by half and apply more heat.

How to Identify and Fix Common printer Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

Why does my HP printer keep saying cartridge problem? Please check and wipe the cartridge contacts. The common cause of the cartridge problem message is the gold contacts found on an electronic chip on the body of the HP cartridge being cloaked with dirt or ink or even because of physical damage.
Most commonly “Cartridge Problem” means that your HP printer simply cannot recognise the colour or black ink cartridges. Thankfully however this error message can usually be cleared with some basic troubleshooting.
A Cartridge is Low or Cartridge is Very Low message displays when the amount of toner in the cartridge is below a certain percentage. This message is a reminder to have a replacement toner cartridge available. You do not need to replace the toner cartridge until print quality becomes unacceptable.
Clean the Cartridge Contacts: one of the most common reasons you might get a cartridge problem error when your cartridges are new and full is the contacts on the cartridge might be dirty or otherwise obscured from making good contact with the electronics in the printer head carriage.
On your computer, in the Windows Notification Area (bottom-right corner of your Windows desktop), right-click the printer icon. In the printer menu, select the Properties or Preferences option. In the printer settings window, the ink or toner levels are displayed for the currently-installed cartridge(s).
The No Toner message appears if the toner cartridge or the toner cartridge and drum unit assembly is not installed correctly. Remove the toner cartridge and drum unit assembly. Remove the toner cartridge from the drum unit, and reinstall the toner cartridge back in the drum unit.
An inkjet cartridge is made of a dye-based ink dissolved in water or glycol. These cartridges spray liquid onto a paper as tiny precise drops from the nozzle. The inkjet cartridges come with inbuilt microchips that control the ink spray for accurate printing.
The message TONER LOW appears on the display when one of the toner cartridges is running low on toner, but the cartridge has not reached its end of life. This is just an alert that the toner cartridge will reach its end of life in the near future.
As a general rule, when a printer runs out of ink or toner, it stops printing legibly. Depending on the printer model, the unit may look to replace one colour with another. For example, if you run out of black ink, your printer could replace it with blue, in order to still print the document you need.
Cartridge Protection: This feature permanently associates toner cartridges with a specific printer, or fleet of printers, so they cannot be used in other printers. Protecting cartridges protects your investment.
Streaks, smears and stripes on your printout are all signs of a bad cartridge, as is a lack of a particular color or a color appearing very faint. Sometimes the printer refuses to print if a cartridge is faulty.
Your printer displays the “Missing or Failed Printhead” error to signal a malfunctioning printhead. The issue could be due to clogged ink nozzles, dirty ink cartridges, internal paper jams, and more. HP printers may also display this error if the printhead pulls air from ink cartridges.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Brother toner cartridge low toner override
ANSWER : Thank you. You are a genius. Of course this is not a substitute for cartridge replacement but it is great for extending the life of the color cartridges and allowing you to continue to print until you can get new cartridges.

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HP LaserJet 5000

MFC9420CN toner problem
ANSWER : There is no reset or override http://www.uninetimaging.com/downloads/technical/TecArtWebAdded/Brother_HL_2700_TN_04_Reman_eng.pdf

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HP LaserJet 5000

Problem with toner
ANSWER : Printers get dirty when dust or flakes collect on the printer. If left unchecked, the printer will start producing documents of low print quality. A toner cartridge has a life expectancy of roughly three to six months. It is a good idea to keep a few basic cleaning supplies on hand and clean the printer each time a toner cartridge is replaced. Some of the things needed in the printer cleaning kit would be some lint-free cloth, alcohol, a small brush, gloves, and a spray-n-wipe cleaner.

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HP LaserJet 5000

Toner Problem
ANSWER : There is a strip of plastic film that seals the toner bin to keep it from leaking in transport. If you don’t pull it out, then you will get blanks. Went to a customer once who had the same problem. He tried 3 cartridges and they were all printing blanks.

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HP LaserJet 5000

Brother toner cartridge low toner override
ANSWER : follow these steps:

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HP LaserJet 5000

Expired Toner and Suggestions for Source of Toner
ANSWER : Hi Frank, I had a very similar question two weeks ago, but my “old beloved workhorse” is an HP Laserjet 4L. From the good old days! I too had made bad investments in “new but old truly HP” toner cartridges, hoping to coax more life from my printer. I ended up choosing to try a remanufactured cartridge from www.4inkjets.com. It was a gamble, but the website said they had a 100% satisfaction guarantee. And I can tell you they have lighting fast service. I’ve now printed 50 pages without a flaw. JOY! While the cartridges and technology are different, I suggest you try the same place. And good luck!

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HP LaserJet 5000

Problem with toner
ANSWER : Was that the original problem? If not, then it’s possible you put too much grease on the heater assembly. That would act as an insulator. You just need a thin layer on the heater itself. Otherwise, you can adjust the temperatures in the control panel to apply more heat. Another thing to try is to feed from the Manual Feed tray. That will slow the printing by half and apply more heat.

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HP LaserJet 5000

toner reset problem
ANSWER : There’s a chip on each cartridge. You can just buy replacement chips and that will reset the count back to zero. Then you just watch for the print to start getting light and then you replace the cartridge or refill it. https://www.youtube.com/watch?v=wkWi2iqggyY

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HP LaserJet 5000