HP LaserJet 4V

How to Identify and Fix Common Problems ?

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Dust, paper fiber, and other debris might accumulate on the paper feed rollers and cause paper jams and paper feed issues. Clean the rollers inside the printer, and then try to print again. Turn off the printer, and then disconnect the power cord.
Check inside the printer for any debris that might be causing paper jams. Turn off the printer, and then unplug the power cord from the electrical outlet. Remove any paper from the input tray. Open the rear access door, and then clean the paper feed rollers with a lint-free cloth lightly moistened with filtered water.
If your printer keeps jamming, you should know that the most common cause of a jam is misalignment of the paper. Paper needs to load in smoothly, completely flush with the tray. Overfilling the tray is a great way to ensure you will be spending some personal time getting to know the inside of a printer.
Common causes of paper jams include: Damaged rollers. Inserting paper that is incompatible with the printer. Loading the paper incorrectly.
The guides in the paper tray are there to make sure the stack of paper is exactly where the printer was designed to grab from. If the paper is even slightly askew, the rollers will pick it up a little crooked, and — guess what — the crooked sheet will immediately get jammed.
A paper jam is when paper or other printed material gets stuck or lodged in a printer and cannot eject.
Wipe the sensor window with one of the cotton swabs provided in the Printer Cleaning Kit, slightly dampened (not soaked) with isopropyl alcohol, to remove dried ink. If the sensor window is heavily coated with dry ink, you may need to apply some pressure while wiping, helping the cotton to absorb the ink.
When a printer resides in a humid environment, the moisture content can distort the paper, making it warped, wavy or curled. This can disrupt the function of the printer and cause paper jams. It can also cause streaks and smudging during the printing process, diminishing the print quality.
The optical sensor reads the unique media `signature` of the paper by measuring inherent optical properties and comparing them with the signatures of other papers. Once the paper is identified, the printer optimizes printing for the particular paper type.
Make sure you don`t overload the tray. A good way to stop the printer becoming jammed, is to fan the paper before you put it in the tray as this will shake out any dust and reduce static, which are two major causes of paper jams. Another way to avoid a printer paper jam is to keep your machine clean.
Stop the print spooler, delete print job files, and then restart the computer and the printer. Turn off the printer, and then unplug the power cord. In Windows, search for and open Services. In the Services window, right-click Print Spooler, and then click Stop.
Make sure you don`t overload the tray. A good way to stop the printer becoming jammed, is to fan the paper before you put it in the tray as this will shake out any dust and reduce static, which are two major causes of paper jams. Another way to avoid a printer paper jam is to keep your machine clean.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

hp 8600 pro when power on, paper jam message appear but there is no paper jam in the tray
ANSWER : Hp 8180 Photosmart All In One code keeps says paper jam and carriage jam when neither are jammed. I followed all the recommended things to do. I live in Raleigh NC any place to take this or any suggestion.

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HP LaserJet 4V

HP LaserJet 1200 Early Feeding Causes Paper Jam
ANSWER : Seriously, dmzcompute, you are awesome! And this is just what the internet does so well: a specific fix for an esoteric problem, thus keeping a 15 year old machine alive another day. Thank you!

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HP LaserJet 4V

My printer feeds through one piece of paper all the way and then a half piece of paper and stops. I pull out the paper to stop the paper jam and then it prints but sounds rough. After printing, it doesn't feed the paper all the way through.
ANSWER : And the first 2 sheets, the full and half sheet that go through first, are blank.

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HP LaserJet 4V

Good toner cartridges still available for HP LJ 4V?
ANSWER : Try directpreciseimaging.Com in Calif. Don’t worry about resistance unless there is none.

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HP LaserJet 4V

HP LaserJet 1020 paper jam on output/exit
ANSWER : Good afternoon, I have a Laserjet 1020 with the same problem, when the paper comes out, it remains a last centimeter in the last needle and the orange LED flashes.You can confirm that this is the pressure roller that presses on the fuser? MAYBE IT’S TOO HARD TO TURN?

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HP LaserJet 4V

HP Officejet Pro 8500 Wireless with fake paper jam
ANSWER : HP Officejet is by far one of the frustrating piece of equipment I have ever owned. I bought it as unused in the package, at that point no warranty left. less than 6 months and 500 pages the white cog gear wheel broke. Luckily with instructions in this site I manage to glue it back together. Then I bought new ink – problems started as they were not original HP 30$ per cartridge. Ordered originals (here in China), took over one week to get them. Then found out that printhead needed to be replaced => more than 100$ spent. Still constant problems: If my wife kids print, I need to be stand-by as you never know what happens. Really an Office level equipment. After cleaning one paper jam I broke the encoder tape, took me another 4 hours to get it fixed. Then broke the cog gear again and got it displaced. Another 4 hours. Only reason I am not throwing this s***t out of window is that there are still ink left. Luckily this drinks them like a horse, for sure I will no more buy new ink. I will get a new laser instead, and not from HP. About cog wheel fixing: make sure that the white wheel is positioned correctly so that the small torx in shaft goes into the slit in the white wheel. When fitting the black cover back, make sure that the white washers on both sides fit into to slits of the black cover. Good luck.

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HP LaserJet 4V

Paper Jam error but no paper jam
ANSWER : Obviously you didn’t get all the paper cleared out. There is a small scrap in the paper path causing the jam when the paper hits it. You can try clearing it out by inserting something stiff like a piece of file folder from the back of the printer into the paper path and pushing the offending piece out that way.

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HP LaserJet 4V

Paper Jam and carriage jam code when nothing is jammed
ANSWER : Did you try cleaning the encoder strip that runs through the cartridge assy.? Use Window Cleaner on a paper towel. Also, check inside on the right. I’ve seen a lot of times where there is a folded up scrap of paper that stops the carriage from going all the way to the right.

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HP LaserJet 4V