HP DesignJet 4000

How to Identify and Fix Common Problems ?

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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.
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.
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.

There are four primary causes for horizontal banding on prints from inkjet printers, (1) nozzle clogs, (2) mis-aligned print heads, (3) low quality print settings (4) incorrect paper thickness settings. Below we will describe each of these causes for horizontal banding as well as ways to try and fix them.
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.
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.
In the [Advanced Settings] dialog box, select [List of Settings] [Toner Density] [Adjust] → click [Details]. Adjust the density for each color → click [OK].
Toner light: When the print cartridge is low, the Toner light illuminates. When the print cartridge is out of the printer, the Toner light blinks. Cancel button: To cancel the print job currently printing, press the Cancel button. While in the Startup state, the Go, Ready, and Attention lights blink one after another.
The Edge light bar glows white in the center when the printer is idle and not connected to a network.
If you notice that your print quality is uneven, too light, too dark, or there are vertical or horizontal lines in the print (banding), try these solutions: Run a nozzle check to see if any of the print head nozzles are clogged. Then clean the print head, if necessary.
Usually a quick paper setting adjustment will clear up a ghosting issue right away. Run a cleaning – Most printers have a cleaning function built into the machine. Run this a couple of times to attempt to clear up the printing issue. Inspect the drum – Sometimes excess toner powder can stick to the drum.
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

HP 4000 Dupler Grinding Noise
ANSWER : More Information

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HP DesignJet 4000

HP Laserjet 4000 Printing Blank Pages
ANSWER : Would just like to say thank you to every one. I am a teacher and need my printer for a ridiculous amount of paper work that keeps me away from working with students. My printer was down for 5 school days. I finally got the new toner and it still didn’t print. After following your meticulous instructions I was able to get it working. Thank you Thank you Thank you to all people who contributed to this.

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HP DesignJet 4000

Cleaning HP 4000 duplexer
ANSWER : I know this is a very old post, but I haven’t been able to find any information regarding how to disassemble this duplexer. The 6 screw’s easy, but how do you “prise” off the left cover? If I do it wrong, I know I will break one or more molded hooks on the cover. Can someone please help?

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HP DesignJet 4000

HP 26 vs HP 29 cartridge compatibility
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HP DesignJet 4000

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.

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HP DesignJet 4000

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

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HP DesignJet 4000

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?

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HP DesignJet 4000

Not lifting paper
ANSWER : This isn’t Twitter. You can type in more details so we know what is happening and maybe we can offer advice.

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HP DesignJet 4000