HP LaserJet 4L

How to Identify and Fix Common Problems ?

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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.
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.
Updated: 02/07/2022 by Computer Hope. A paper jam is when paper or other printed material gets stuck or lodged in a printer and cannot eject. When this occurs, the printer does not function properly until the paper is manually removed.
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.
Sometimes a paper jam error persists even though there is no jammed paper (false paper jam). Reset the printer, which might clear a false paper jam error, and then try to print again. With the printer turned on, disconnect the power cord from the printer. Unplug the power cord from the power source.
Improperly Loading Paper into the Device

Loading paper that is stuck together, frayed, curled or bent can cause a jam. Overloading the paper tray, loading different thicknesses of paper in the tray or using paper that isn`t appropriate for your particular printer can all result in a jammed printer.

With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet. Remove USB cable, if present. Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
On some Laserjet printers, you might need to remove the toner cartridge and/or imaging drum to access the paper jam. If your printer has a paper path cover behind the carriage, remove the cover, and then remove any jammed paper. Pull out the input tray, and then remove any jammed paper.
With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet. Remove USB cable, if present. Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
A piece of paper stuck in the paper tray or inside the printer can create a paper jam. Paper jams can occur for a variety of reasons, such as overloading the paper tray, loading different thicknesses of paper in the tray, or using paper that isn`t appropriate for your particular printer.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

newly installed printer…can scan but cant be set as a default printer???
ANSWER : ITS AN EPSON L210…

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HP LaserJet 4L

P2055dn Duplex Jam – Jam in Output Bin
ANSWER : I have same problem on duplex of 2nd page. Paper stops just behind Tray 1 pickup roller. Noted there is a small black 1/2″ lever tab behind the lower rear jam door. Noting that when printer jams trying to finish 2nd side, the lever is down ??? No answer, I know, just observation & looking for mention of this by someone. Going to try and find a black or white sensor which may be out of position.

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HP LaserJet 4L

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 4L

PRINTER MX 320 CANON ALL IN ONE PRINTER
ANSWER : Probably a worn feed roller. You can try cleaning it with a damp rag as it might just be covered with paper dust.

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HP LaserJet 4L

Difference Between Laser Printer and InkJet Printer
ANSWER : Laser uses toner which is a powder that gets melted onto the page. Inkjet uses ink that gets squirted onto the page.

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HP LaserJet 4L

Printer jammed, after jam clearance there is an error message
ANSWER : I am looking for steps to isolate this issue. I don’t suspect the formatter.

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HP LaserJet 4L

printer error fix
ANSWER : Epson 2540

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HP LaserJet 4L

HP Laserjet printer page counter backward move
ANSWER : On all HP laserjet printers if you power them off the page count will decrease back to the nearest 10. For example, if the page reading is 123,799 and you power it off, the page count will go back to 123,790.

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HP LaserJet 4L