HP LaserJet 4050N

How to Identify and Fix Common Problems ?

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

When your printer leaves black lines, the lines indicate that there are excess toner powders on the rollers or transfer belt within the printer. As the paper is moved along by the rollers and transfer belt, any excess powder left on them can result in lines being left on the paper.
Black lines and smudges on your document may indicate that your printer is dirty. Dirt, dust, or toner accumulated on the rollers or transfer belt can cause smears and smudges on the paper as it goes through the paper.
HP has determined that 99% of all lines and streaks on copies made by feeding the original documents through the ADF are caused by debris on the ADF glass. Debris can include dust, paper or toner dust, residue from sticky note adhesive, correction fluid or tape, ink, fingerprints, and more.
A printer printing lines on the page are normally caused by a blocked, dirty, or damaged print head. Blocked ink cartridge nozzles, or not removing protective seals correctly when you installed a new ink cartridge can also cause missing lines of print.
Conclusion. If your laser printer is causing horizontal black lines you either have a problem with the optics or the drum. Cleaning the optics and replacing the drum should fix the problem in most cases.
If you notice white or dark lines in your prints (also called banding), try these solutions before you reprint: Run a nozzle check to see if any of the print head nozzles are clogged. Then clean the print head, if necessary. Make sure the paper type setting matches the type of paper you loaded.
Wipe clean the cartridge carriage where the cartridge connects to remove any dried ink (make sure the printer is off and unplugged). If the printhead is built into the printer, clean where the ink comes out with a damp cloth. Re-install cartridges and run a print head cleaning process.
For cleaning, HP recommends using HP Equipment Cleaning Wipes, but you can use an HP-approved lint-free wipe and deionized or distilled water. Note: If dark spots appear on back side of prints, clean drum screen. Note: If minilab prints more than 2000 prints each day, clean drum screen up to twice daily.
These types of lines are typically caused by dirt or white out (correction fluid) on the scanner unit, or one of the corona wires for printing is dirty. This problem is usually resolved by cleaning the scanner glass, scanner glass strip and white plastic bar with a soft lint-free cloth, or cleaning the corona wires.
Horizontal lines (or vertical lines) appear all around the desktop display area. They are usually caused by a faulty video card or monitor cable. Depending on your operating system and graphics driver version, horizontal line issues vary from a minor nuisance to complete failure.
A vertical line is a line extending up and down. On a table (like the one shown to the right), the legs of the table are vertical lines. The y-axis is an example of a vertical line.
A common cause of faded, faint printouts from your inkjet printer is dried ink particles causing a blockage in your printer. The printheads on an ink cartridge can be become blocked if the printer is not used for a period of time, so it is recommended to print a few pages each month to maintain the print quality.
Printer Faults – Faded One Side of a Print. Fading at a margin generally suggests: an imbalance of the toner, all of it is unshiftably at one side of a cartridge. The toner agitators or stirrers should move the problem but don`t invariably succeed.
The most obvious is most common on laser color printers and can be detected by a flashing message on the printer display screen. Other signs of a bad printer drum include printing blank pages, printing gray pages and strange sounds coming from the printer as it prints.
You`ll know the drum is dirty if you notice that the print quality has become blurry and features blank spots or oddly-colored spots despite having full toner cartridges. Horizontal lines across the printout when the paper passes over a dirty area are another sign that it`s time for some maintenance.
The streaks or lines might be caused due to low ink levels in one or both ink cartridges. Check the ink levels using the HP Toolbox to determine if the ink cartridges are low on ink and need to be replaced. note: Ink level warnings and indicators provide estimates for planning purposes only.
“Lines on a Copy” is caused by debris on the scanner glass. Debris can range from dust, wite-out, or ink. If the scanner glass appears clean, use the bad copy to help you find where the scanner glass is dirty.
Streaking is usually caused by a worn out drum unit or spent toner cartridge. Drum units are a consumable and only need to be replaced after the use of 3 or 4 toners. Not all printers use a separate toner and drum unit.
Black copies or images scanned into the computer are typically caused by dirt or white out on the scanner unit. The scanner unit is the mechanism that reads in the documents that are being copied or transmitted. 1.
Horizontal lines are an event in time. Rainbow colored lines might be due to a flickering lamp. Or the scanner has an internal high frequency power supply for the lamp, and it might cause such a problem.
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 the contacts between the cartridge and the printer are dirty or clogged, there is a high chance that this can be the main cause for the ink to leak on the paper. To properly clean the contacts, open the printing machine and remove the ink cartridges and place them on a clean piece of paper.
Fill a bowl with warm water (or a mixture of water and vinegar to clean the printhead) and place the printhead directly in it. Let it sit for five minutes or so. Pull the printhead out of the water and use a lint-free cloth or paper towel to remove the dried ink.
Clean Your Print Cartridge Manually

First, locate your print head. Next, dip a q-tip in a mixture of isopropyl alcohol and warm, not hot, water. Swab the q-tip along your print head and dislodge any dry pieces of ink that may be causing blockages.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP 26 vs HP 29 cartridge compatibility
ANSWER : Eu decidi fazer um binário opções, o primeiro passo neste trabalho yavlyaetsya formação inicial e os fundamentos .. Put Options and Call Options Trading É por isso que eu escolhi um par de artigos de alguns sites na Internet, se você pode se perguntar vospolzovatsya put-call-options.com/br/what-are-options/binary-options-and-strategies

Read Full Q/A … :

HP LaserJet 4050N

HP laser jet 3015 "Upgrade Error Call HP Support"
ANSWER : rgtr

Read Full Q/A … :

HP LaserJet 4050N

evenly spaced horizontal lines on hp laserjet III printout
ANSWER : The lines would be a toner cartridge problem. Which paper tray? The MF tray or the optional paper cassette?

Read Full Q/A … :

HP LaserJet 4050N

HP CM2320fxi – Groaning / Vertical Lines
ANSWER : Sounds like you need a monochrome laser printer. I know you want to keep what you already have but it just doesn’t make sense to have to deal with a machine that is meant to provide color printing when you only want black and white printing. Chuck the color laser and get a black and white printer. It will save you money and headaches in the long run.

Read Full Q/A … :

HP LaserJet 4050N

HP PSC 2410 clicking noise problem
ANSWER : I have the same issue… I’ve tried everything above… I don’t believe it’s dust as this happens on and off occasionally… I think I may need to make a youtube video of me “fixing” this printer! I’m really frustrated with this thing!! If it doesn’t work soon, I’m gonna by the solution in the form of a hammer!

Read Full Q/A … :

HP LaserJet 4050N

HP 4101MFP Hard Drive Question
ANSWER : To initialize: turn off – Press start and hold down while turning on, release after all three light light, you should see initialize disk hit check, and allow to boot.

Read Full Q/A … :

HP LaserJet 4050N

HP 9040 MFP Error code
ANSWER : bonsoir

Read Full Q/A … :

HP LaserJet 4050N

HP 4250n – blurry text
ANSWER : What is the fuser? And how can it be changed?

Read Full Q/A … :

HP LaserJet 4050N