Question about HP LaserJet 4ML Printer

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HP LaserJet 4ML printer toner cartridge replaced but only clear or very faint output. Test page shows very faint title.

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Faded prints even after replacing the toner cartridge could most likely be due to dust at the laser reflecting mirrors inside the printers, which requires cleaning by a professional.

If you are comfortable with working inside such machines, you may do it your self. Download repair and service manual for your printer and study it before you attemp cleaning/ servicing.

Hope this helps!!
Let me know if any further clarification is needed.

CreativeTECH

Posted on Nov 13, 2010

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Posted on Jan 02, 2017

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Why are pages printed on my HP LaserJet 3380 rather faint. Per haps the toner needs replacing but is there anyway to find this out. I do not want to buy another toner unless the toner does need to be...


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Two faint white horizontal lines


the white ghost lines are down to the charge wire within the toner cartridge being dirty, the only real way forward is to replace the toner cartridge as access to the charge chorona wire is not possible without ruining the cartridge itself

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LOCATION OF PRINTER SENSOR


Jams

Clearing jams

CAUTION Do not use sharp objects, such as tweezers or needle nose pliers, to remove jams.
Damage caused by sharp objects will not be covered by the warranty.

CAUTION Always pull jammed media in the direction it would travel through the paper path.
Do not pull jammed media against the direction of travel through the paper path to avoid damage
to the printer.

To prevent damage to the printer when clearing jams, including jams in the output bin, always open the
print-cartridge door and remove the print cartridge. Keep the door open and the cartridge out until the
jam has been cleared. Opening the print-cartridge door and removing the print cartridge relieves tension
on the printer rollers, which prevents damage to the printer and makes the removal of jammed pages
easier.

Occasionally, media becomes jammed during a print job. You are notified of a media jam by an error
from the software and the printer control panel lights. See Control-panel lights (HP LaserJet 1010 series
printers) on page 102 or Control-panel lights (HP LaserJet 1020 printer) on page 106.

The following are some of the causes of media jams:

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The input trays are loaded improperly or are too full. See Loading media on page 25.

NOTE When you add new media, always remove all of the media from the input tray and
straighten the stack of new media. This helps prevent multiple sheets of media from feeding
through the printer at one time, reducing media jams.

The media does not meet HP specifications. See Media specifications on page 21.

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Typical media jam locations

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Print cartridge area: See Removing a jammed page on page 43.

Input tray area: If the page is still sticking out of the input tray, gently try to remove it from the input
tray without tearing the page. If you feel resistance, see Removing a jammed page on page 43.

Output path: If the page is sticking out of the output bin, see Removing a jammed page


NOTE There might be loose toner in the printer after a media jam. This toner clears up after
a few sheets are printed.

Removing a jammed page

Use the procedures in this section to remove a jam.

CAUTION Media jams might result in loose toner on the page. If you get any toner on your
clothes, wash them in cold water. Hot water will permanently set the toner into the fabric.


Partshere Troubleshooting

CAUTION To prevent damage to the printer when clearing jams, including jams in the output
bin, always open the print cartridge door and remove the print cartridge.

To prevent damage to the print cartridge, minimize its exposure to direct light. Cover the print
cartridge with a sheet of paper.

NOTE The following illustrations show the HP LaserJet 1020 printer. The same procedure is
used to remove a jam in the HP LaserJet 1010 series printers.

1

Open the print cartridge door, and remove the print cartridge.

2

Grasp the middle edge of the side of the media that is most visible, and carefully pull it free from
the printer.

CAUTION Do not use sharp objects, such as tweezers or needle nose pliers, to remove
jams. Damage caused by sharp objects will not be covered by the warranty.

CAUTION Always pull jammed media in the direction it would travel through the paper path.
Do not forcefully pull jammed media against the direction of travel through the paper path to
avoid damage to the printer.


3

When you have removed the jammed media, replace the print cartridge, and close the print cartridge
door.

After clearing a media jam, you might need to turn the printer off then on again.

NOTE When you add new media, remove all of the media from the input tray and straighten
the stack of new media.

Sep 25, 2011 | HP LaserJet 1020 Printer

1 Answer

My HP 4ML has been printing fine until recently. Every print job, big or small, the first couple of pages print the pages mostly black, then start to fade the more pages I print in the same print job. ...


You didn't say that you swapped out the toner.
Let's come back to that point later.

Put paper in the manual feed tray.
Print something.
As soon as the paper feeds halfway into the printer, open the top cover.
Pull out the toner, look down at the paper. Is it mostly black?
If the answer is yes....replace the toner.
Vacuum out the inside of the printer and print again.
I think you have a bad toner cartridge

Feb 01, 2011 | HP LaserJet 4ML Printer

1 Answer

HP Lexmark 4050N Printer is smearing pages with faint ink mark.


This is more then likely due to an old or bad toner cartridge. Away for you to find out is to run a test print and if you listen close you can hear the paper advancing through the printer. It might take you a couple times but try to catch the paper at a point in the printing to where it would be just passing by the toner cartridge and ope the top cover. Remove your toner cartridge and pull the paper out. But becareful when pulling the paper out to not rip it or get toner on you. The toner has not yet been bonded to the paper yet until it passes the fuser at the back of the printer. If the paper shows the smear just after the toner cartridge then there is the issue.


Best of luck... And have a Happy and safe Holidays..

Dec 01, 2010 | HP LaserJet 4050n Printer

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replace the toner cartridge or get the cartridge refilled as its about to empty .

Dec 09, 2008 | HP LaserJet 1020 Printer

1 Answer

Toner all over the page with bubles


REPLACE THAT BAD RECYCLED TONER CARTRIDGE

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Test Page blachy, text faint, supplies staus page bar vertically spotted


Have you tried the toner cartridge?? IF not please do so. Failing this clean out the middle of the machine with a dry cloth as you may have loose toner in there. Try this if it doesn't work then the laser unit may have a fault.

Hope the first one helps
Thanks J

Jan 15, 2008 | HP LaserJet 2430n Printer

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