HP LaserJet 4

How to Identify and Fix Common Problems ?

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

LaserJet 4200

They were introduced in December 2002 together with the HP LaserJet 4300 series.

The HP LaserJet 1300 is a high performance laser monochrome printer with a printing speed of up to 20 ppm, which improves your productivity and performance.
Hewlett-Packard introduced the LaserJet P4014 in 2008 for businesses and professional practices with heavy media traffic. Versatile paper handling is abundant. The standard capacity starts with the 250-sheet tray and 100-sheet bypass tray.
A good rule of thumb: if your printer is more than seven years old, you may want to start pricing new units. In this case, even a relatively inexpensive component is not worth the investment.
Save time, money, and paper when you use HP`s two-sided printing accessory. The accessory prints both sides of the page automatically, so you can concentrate on more important work. You`ll see budget savings because paper consumption is cut in half.
If you look at the back door cover of the printer there is a label that has your model number serial number and also includes the date of manufactuer. Hope this helps. If you look at the back door cover of the printer there is a label that has your model number serial number and also includes the date of manufactuer.
P4015: Speed is 50 ppm A4 size and 52 ppm Letter-size.
Improve Productivity

The powerful HP LaserJet P4015 Printer series features print speeds of up to 52 pages per minute (ppm), and the Instant-on Technology delivers a quick first page in less than 8.5 seconds from Sleep mode, so you can boost team productivity.

Stay productive—Print at up to 26 ppm and get a first page out in as fast as 8.5 seconds. 5 • Share printing resources with an Ethernet-connected MFP. Tackle multiple-page documents and two-sided prints with the 35-page automatic document feeder.
Open the HP Smart app, and then create an account or sign in. If you do not have HP Smart, download it from 123.hp.com or your app store. From the app home screen, select your printer name or image. Click Printer Information to view the model name, product number, and serial number.
The average lifespan of a printer is around 3-5 years. With proper upkeep and maintenance, some printers can last longer, but eventually your machine will need an upgrade.
High Cost of Ink Cartridges

Old printers use ink and toner faster than the newer models. Thus, if you notice that you have been spending too much money on the ink cartridges, you might need to consider buying a new printer that uses ink more efficiently.

If you look at the back door cover of the printer there is a label that has your model number serial number and also includes the date of manufactuer. Hope this helps.
The average lifespan of a printer is around 3-5 years. With proper upkeep and maintenance, some printers can last longer, but eventually your machine will need an upgrade.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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 LaserJet 4

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 LaserJet 4

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 LaserJet 4

HP Laserjet 4250 – RFU LOAD ERROR
ANSWER : Italiano:

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HP LaserJet 4

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

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HP LaserJet 4

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

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HP LaserJet 4

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 LaserJet 4

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 LaserJet 4