HP DeskJet Plus

How to Identify and Fix Common Problems ?

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Faint, streaky or spotty prints are all common signs of a clog but a simple cleaning can usually get your HP ink cartridges working again. Printheads clog due to infrequent cartridge use. If you regularly go a few weeks without printing, your cartridges will eventually dry out and need to be replaced.
Here are the most common causes of a printer printing faded text or images: Low ink or toner levels. Toner sticking to the fuser roller or problems with the transfer roller. Low ink or toner density settings.
Check the toner darkness settings.

Sometimes light print can be remedied by simply changing the toner darkness setting in the printer. To change the setting, go to MENU>>SETTINGS>>QUALITY MENU>>TONER DARKNESS. Increase the darkness and send a test print to see if that fixes the issue.

Reasons why your HP printer has ink but won`t print

This may seem obvious, but it sometimes happens: first make sure your paper tray has paper in it. Misalignment, clogged printheads, faulty data communication or insufficient ink levels can also be sources of the problem.

There are numerous possible causes for a printer that`s randomly producing blanks. The most common ones are empty ink cartridges, improper cartridge installation, and congested nozzles. Driver and software issues can sometimes cause this problem as well.
Unfortunately, there is no way to restore faded ink to its original state. Some chemicals are advertised to darken original inks, but they are often damaging to paper and conservators do not recommend them.
The printer is either low in toner, the density is set too low, or the Economode may be turned on. Remove the toner cartridge and shake it. This will redistribute the toner and often will temporarily solve the problem. However, this usually indicates it is time to install a new cartridge.
If you still find your laser printer not printing dark enough, toner might have built up on the laser print rollers. To prevent this from happening and lightening your laser printouts, make sure that you run a printer cleaning sheet through your laser printer occasionally to keep your laser printer fresh.
Increase Print Density For Windows

Navigate to Settings > Printers and scanners > Devices in the left-hand menu. Choose your printer from the list of options and click Manage. A dialog box will pop up. Switch to Device Settings, and increase the print density from 1-5 as you wish to darken the text.

If a fuser unit is not heating the toner powder correctly, ghost images can appear when printing. You can check to see if the fuser unit or drum unit is causing the ghosting by having a look at the ghosted images.
If you still find your laser printer not printing dark enough, toner might have built up on the laser print rollers. To prevent this from happening and lightening your laser printouts, make sure that you run a printer cleaning sheet through your laser printer occasionally to keep your laser printer fresh.
If your PC or the LCD screen on your printer is telling you that your ink cartridges are full but no ink is passing through to the paper, then it`s most likely that you are dealing with a clogged printhead. Blurry documents and images that appear faded are also signs that it`s time to remove the excess ink.
If you still find your laser printer not printing dark enough, toner might have built up on the laser print rollers. To prevent this from happening and lightening your laser printouts, make sure that you run a printer cleaning sheet through your laser printer occasionally to keep your laser printer fresh.
If your PC or the LCD screen on your printer is telling you that your ink cartridges are full but no ink is passing through to the paper, then it`s most likely that you are dealing with a clogged printhead. Blurry documents and images that appear faded are also signs that it`s time to remove the excess ink.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Print file sent but no printing occurs
ANSWER : Been working on these since they first were released. Never seen a problem like yours. If it happens again, try doing an engine test, as it bypasses the formatter board. The engine test is located at the right side of the manual tray opening. Look for a hole in the side wall. Stick something like a paper clip into it to actuate the test button. It will then print a lined test page. If it does that, then it points to the formatter board as the cause of your problem.

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HP DeskJet Plus

LaserJet 4 won't Power Up
ANSWER : I haven’t seen that particular behavior on that model. It either works or it doesn’t. My first choice would be the power supply.

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HP DeskJet Plus

Prints blank pages, won't print from computer
ANSWER : Don’t know why you replaced the fuser, but assuming you had print before, then it must have been something you did during the procedure. Only thing I can suggest is to recheck your work. Just because you reinstalled a connector doesn’t mean that it is seated firmly enough to work. Any flat ribbon connectors that you removed and reinstalled, check to see that the contacts are all flat and not peeled back.

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HP DeskJet Plus

Laserjet 4250 print quality issue (see image)
ANSWER : It looks like a fuser problem. One way to prove it is with the half-stop test. Put a sheet in the drop down manual feed tray. Send a print job and watch the paper. When the end of it is about to enter the printer, open the lid and take out the toner cartridge. Look at the printed image. If it looks OK, then it is a fuser problem. If not, then it is a toner cartridge issue since it hasn’t gone through the fuser.

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HP DeskJet Plus

HP LaserJet 2200D won't print configuration page
ANSWER : Find someone with a HP LaserJet 4100 and you can configure the card to the IP you want:

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HP DeskJet Plus

HP Laserjet 1320tn printing grey instead of black
ANSWER : Try this test. Put a page into the manual feeder and do that same test. When the end of the page is just about to enter the printer, open the lid. Take out the toner cartridge and pull back the shutter. Look at the image and see if it is black. The explanation is that there is high voltage going to both the toner cartridge and the charge transfer roller below it. If the image on the drum is black, then the fault is at the transfer roller not getting enough high voltage. The transfer roller pulls the image off of the drum and down onto the paper. It would not be a laser scanner problem as any issue with it would not result in an overall gray image, but combination of gray and black. It will probably turn out to be a bad HV power supply, which will need replacement. I’ve never seen this particular problem on this model.

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HP DeskJet Plus

My 2550n Color LaserJet does not want to print in color
ANSWER : That model had issues with the carousel solenoid sticking. That might explain why it works after you let it sit for 10 minutes. The solenoid gets hotter with use which causes the deteriorated foam on it to become sticky and hold down the release plate instead of letting it go. This allows the carousel to spin when it is supposed to stop for each color. The solenoid is located on the right side of the printer. If you open the lid, it is just behind the opening at the top right. You need to remove the top of the printer and scrape off the goo on top of the solenoid body. I put a piece of thin sticky backed felt to replace it. Other people use electrical tape.

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HP DeskJet Plus

HP Color Laserjet 3800 problem when printing color
ANSWER : Do a cold reset

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HP DeskJet Plus