Question about Brother MFC-7820N Laser Printer

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Copy function problem

The color of copied material is very light, almost hard to read. But the printout works fine, because it is new cartridge. Is there ant internal lamp or other stuff may damaged? The contrast is set up to high, and the quality is set to be photo.

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SCan glass slit is dirty, slit of glass 15cm x 3cm left top,

if not then dirty/worn lamp

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HP Officejet 5610 All-In-One. cartridge error: refer to device documentation to troubleshoot ... I was in the process of of printing a series of documents. does not print prpoperly


Will it color copy- stand alone? Try making a copy on the printer by itself. If the copy is still printing in blue, then go to the service section in the menus, and clean the print head, if that does not work then try the recalibrate function. -If the copy comes out fine when you try it stand alone, try deleting the printer and reinstalling the printer.

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Hp 4480 how do you unpause it


The HP F4480 likely has a malfunctioning ink cartridge which is causing the printer hang (i.e. internal micro-electronics damage inside the HP 60 color or black ink cartridge). You can verify the electrical condition of both HP 60 ink cartridges by activating the Tap 41 diagnostic test report (see video here for complete instructions):

http://inkjet411.com/?page_id=440 (HP 60 - Deskjet F2400/F4400/F4500 models)
    1.While holding the Power button, press Cancel (X) button 4 times, then press the Color Copy button once.
    2.Release the Power button.
    3.The 'Tap 41' diagnostic test print should print.

    Providing the color cartridge is partially functioning the Tap 41 diagnostic test print will be printed (this is a forced service print test which is mainly used for the evaluation of ink cartridge electrical health). A good HP 60/60XL color cartridge should display 1248 good nozzles, while a good HP 60/60XL black ink cartridge should show 336 good nozzles. If the results yield anything different then the ink cartridge is likely damaged and will need to be replaced. Refer to 2nd video on how to read the printout.
    http://inkjet411.com/?page_id=440 (HP 60 - Deskjet F2400/F4400/F4500 models)
    http://inkjet411.com/?page_id=444 (HP 60 - Deskjet F4200 model)

    If the printer attempts to print the diagnostic test pattern (1 page) then the printer is generally considered operational and functional, if nothing is printed, but the printer attempts to print the pattern, then the tri-color ink cartridge is either empty, clogged or severely electrically damaged (black ink cartridge is not used). You can remove the tri-color cartridge, reactivate the tap 41 test and the printer will print the diagnostic test print in black ink.

    For additional support please visit http://www.inkjet411.com

    -Thank you

Dec 09, 2013 | HP F4480 All-In-One Printer

1 Answer

Cannot make the printer work after I changed the ink cartridges?


You can validate the HP60 ink cartridge's electrical health by running the 'Tap 41' diagnostics test (this procedure is specific to the F2480 model). Refer to DIAGNOSTIC TAP 41 video procedure at the following link on how to activate and read the service test: http://inkjet411.com/?page_id=440

1. While holding the Power button, press Cancel (X) button 4 times, then press the Color Copy button once.
2. Release the Power button.
3. The 'Tap 41' diagnostic test print should print.

--- Providing the color cartridge is partially functioning the Tap 41 diagnostic test print will be printed (this is a forced service print test which is mainly used for the evaluation of ink cartridge electrical health). A good HP 60/60XL color cartridge should display 1248 good nozzles, while a good HP 60/60XL black ink cartridge should show 336 good nozzles. If the results yield anything different then the ink cartridge is likely damaged and will need to be replaced. Refer to video on how to read the printout. http://inkjet411.com/?page_id=434

---- If the printer attempts to print the diagnostic test pattern (1 page) then the printer is generally considered operational and functional, if nothing is printed, but the printer attempts to print the pattern, then the tri-color ink cartridge is either empty, clogged or severely electrically damaged (black ink cartridge is not used). You can remove the tri-color cartridge, reactivate the tap 41 test and the printer will print the diagnostic test print in black ink.

For information on North American ink refill services at a major retailer near you (should you wish to save ~50% on ink costs), general printing problem resolutions or advanced HP printer diagnosis procedures (advanced cartridge diagnostic tests/cartridge error bypass & printer reset methods, etc.), please visit Inkjet411: http://www.inkjet411.com

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1 Answer

Hp vivera


Try a hard reset of the printer and see if that does it.

Sep 08, 2017 | HP Photosmart C4180 All in One Printer,...

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My printouts have a very dark haze over them.......the printed letter are fine but it looks like the print cartrige is dumping ink on my paper as it prints. It look like a bad fax copy. What is the...


Either you purchased a a bad quality remanufactured toner cartridge or your fuser film is damaged.

If there is some kind of debris in black color that is on printouts, your fuser film might be damaged. Have a printer technician replace it.

If there is no debris, only bad quality printouts, it's the toner cartridge that needs replacement.

May 31, 2010 | Brother HL-2040 Laser Printer

1 Answer

When I change the black ink cartridge, the alignment page and instruction page are printing out fine. When I place the alignment page on the glass as instructed and press 'ENTER', the printer gives a...


I just had the same issue (align page not detected).

We had just re-installed the empty color cartridge back into the printer (long story but basically we knew we could only print B/W).

The align page printout had a lot of empty spaces around the black lines. This is apparently where the color lines are supposed to print.

Without those color lines, the printer would not detect the align page as color is part of the alignment being done.

Since we only wanted black printouts, I pressed 'cancel' to stop the alignment process, and now we just hit the Black copy button and ignore the alignment prompt on the printer window.

The HP site (enter psc750 in product window) has some helpful ideas as to what the problem might also be. It could be the shipping tape is still on the new cartridge (and preventing the black or color from printing on the align sheets) etc.

Mar 20, 2009 | HP PSC 750 All-In-One InkJet Printer

1 Answer

Light in color and won't copy dark. It come out light purple


you may try
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2) print head--- the ink channel dryer and constipated, take out print head clean it's ink channel using cleaner or steep in water (do not touch circuit pin area with water) 20 minutes or longer. then set back and test (you can do more times), still not fixed, your print head have to change.

Feb 06, 2009 | Kodak EASYSHARE 5300 All-In-One InkJet...

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Copies are very dark; almost grey.


Is this a color copier? If so are you using the color copier setting? If you are it is coping the color of the paper and it is comming out gray. Not sure but I have had this happen before.

Jan 17, 2009 | Office Equipment & Supplies

1 Answer

I need a help...


All cartridges MUST be in place, check the rear door if not fully closed, hope this works...

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