HP CopyJet M

How to Identify and Fix Common Problems ?

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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.
Smears and smudges on the paper can be caused by dirt, dust, or toner accumulated on the rollers or transfer belt as it passes through the paper. Cleaning your printer, particularly the rollers, is one of the options for removing black markings from paper.
Adjust the application settings and the printer settings to the highest possible resolution. Both of these features can typically be accessed from the “Print” menu. Dpi settings can range between 72 dpi and 2400 dpi. Choose the highest dpi setting available for best results when using a laser printer.
The drum cartridge may be defective. If you have a spare cartridge, replace and try to copy and print again. For details, refer to Replace the Drum Cartridge or follow the installation instructions that are included with the new cartridge. If the problem persists, contact Support.
Paper Jams

This is a common laser printer problem. Primary causes include grime, dust, worn rollers, or incorrect paper weight. The most basic way to prevent paper jams is simply through regular cleaning of your printer. Also, replace parts as needed.

Common causes include dust and grime, worn rollers, or inappropriately weighted paper. Prevent paper jams by regularly cleaning your printer and replacing parts as needed. Check the weight of paper that your printer is rated for as well. The printed product is faded.
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.
Laser printers, on average, have a faster print speed than inkjet printers, and usually have a higher print quality. The most affordable models are more expensive than even budget inkjet models, but many people who print a lot find their strengths worth that premium.
If your printouts are blurry or smeared, try these solutions: Make sure your paper is not damp, curled, old, or loaded incorrectly in your product. Use a support sheet with special paper, or load special paper one sheet at a time. Make sure your paper meets the specifications for your product.
If you try to print an image larger than the size for which the image has available information, the image will begin to look jagged or blurry. This is known as “pixelization,” because the printer is literally making the pixels of the image larger to account for the lack of picture information.
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.
If your printouts are blurry or smeared, try these solutions: Make sure your paper is not damp, curled, old, or loaded incorrectly in your product. Use a support sheet with special paper, or load special paper one sheet at a time. Make sure your paper meets the specifications for your product.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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 CopyJet M

What repair needs to be done for a "50 needs repair" message on an HP Laserjet IIIP?
ANSWER : I don’t know what you mean by good toner cartridges. They haven’t been built in about 10 years, so if they are new OEMs in the box, they are guaranteed to fail. The 50 error on that printer is mostly a burned out fuser lamp. This site was sold, so as you can see, there are no more kits available.

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HP CopyJet M

Magenta toner smeared all over printouts
ANSWER : Forgot to add, I have a spare Fuser kit I can install but I’m guessing that won’t fix problems with magenta toner spilled all through the guts of the machine. Is it worth installing?

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HP CopyJet M

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 CopyJet M

HP Laserjet M3035xs RFU Upgrade
ANSWER : There’s no way.

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HP CopyJet M

How to copy a card slot in HP laserjet 4250N
ANSWER : None that I know of, using a computer is likely your best option but I never attempted it.

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HP CopyJet M

HP Laserjet 4200 50.2 Fuser error
ANSWER : if you are using a good fuser the next part to try would be low voltage power supply

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HP CopyJet M

Hp laserjet IIIP
ANSWER : That’s almost always a bad DC controller. Slight possibility of it being a formatter board.

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HP CopyJet M