Question about HP LaserJet 3050 All-In-One Printer

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Line down side of document when copying - changed cartridge but this did not help used cleaning mode this did not help

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Might I assume that you are using the Automatic Document Feeder(ADF) to make your copies?

Put a document on the Flat Bed Glass and copy it. I bet there is no line. Lift up the copy section so you can see the glass. To the left is a thin glass. Clean it. Glass cleaner and a lint free cloth.

Try your copies again. They should be good

Posted on Feb 12, 2010

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When making copies af a document a black line is showing on the bottom of the copied page. How can we fix it.


Clean the document laying flat glass with micro fiber cloth.

Pull out the toner/drum assrmbly and clean the drum with same cloth. Turn the drum using black circular dial on the side and clean it. Do not touch the drum. Also, change the toner cartridge if you have not for long time. This mostly happens when the cartridge is about to run out of toner ink powder.

hope this helps.

Dec 15, 2015 | Samsung SCX 4521F All-In-One Laser Printer

1 Answer

Have a black line on all my scanned files, runs the length of the page, about 1 1/2 inches from the left edge.


To determine if the vertical lines appearing on your printed documents are related to a printing or scanning issue, print a test page by pressing MENU, 4 (Printer), 2 (Print Options), 3(Test Print) and COLOR START.
If the vertical lines appear on the Test Print continue to Procedure A:Cleaning the Corona Wires Inside the Drum.
If the vertical lines do NOT appear on the Test Print continue to Procedure B: Cleaning the Scanner Glass.
Procedure A: Cleaning the Corona Wires Inside the Drum:
NOTE: Brother strongly recommends that customers do not use generic drumunits and/or toner cartridges, or refill their Brother toner cartridge. Each Brother laser printer is designed to work at pre-set temperatures that are matched exactly to each of our individual toner formulations. Each individual component is designed to work with the other to ensure quality and reliability. Using non-Brother supplies may affect the hardware performance, print quality and machine reliability. The Brotherlimited warranty does not apply to any problem that is caused by the useof unauthorized third party drum units, toner cartridges or toner.
A1. Power off the Brother machine using the power switch located on the right side of the machine.
A2. Press down on the front cover release lever and open the front coverby pulling it towards you.
A3. Hold the green handle of the drum unit (labeled 1). Lift the drum unit up and then pull it out until it stops.
NOTE: If you cannot pull the drum unit out, make sure that the front cover is fully open.
A4. Remove the toner cartridges one at a time, by holding the handle of the cartridge and lifting it up and out of the drum unit.
Note: We recommend you place the toner cartridge(s) on a clean, flat surface with a piece of disposable paper underneath it in case you accidentally spill or scatter toner.
A5. Lift the white plastic corona wire cover by lifting the tabs locatedon the right and left side of the cover.
A6. Clean the corona wire inside the drum unit by gently sliding the green tab from left to right several times.
Note: Be sure to return the tab to the home position. If you do not, printed pages may have a vertical stripe.
A7. Close the corona wire cover.
A8. Repeat Steps 5 through 7 to clean each of the remaining three coronawires.
A9. Reinstall the toner cartridge(s):
NOTE: Before reinstalling the toner cartridge, shake the toner cartridgeside to side.
Hold the handle of the toner cartridge and slide the toner cartridge into the drum unit. Make sure that you match the toner cartridge color to the same color label on the drum. Fold down the toner cartridge handle once the toner cartridge is in place. Repeat this for all the toner cartridges.
A10. Push the drum unit back into the machine until it clicks into place.
A11. Close the front door and power on the Brother machine.
A12. Print a test page by pressing Menu, 4 (Printer), 2 (Print Options),3(Test Print) and Color Start.
Procedure B: Cleaning the Scanner Glass
B1. For safety reasons, power the Brother machine Off using the power switch located on the right side of the machine.
B2. Lift the Document Cover and clean the following with a lint-free cloth moistened with a non-flammable glass cleaner:
a. Run your fingertip over the scanner glass of the flat bed to check for debris. If you feel debris, clean the entire glass area but concentrating in the area in which you felt the debris. (Caution! Do notpress down on the glass very hard.)
b. Run your fingertip over the scanner glass on the left to check for debris. If you feel debris, clean the entire glass area but concentrating in the area in which you felt the debris.
c. The white plastic pad located on the underside of the Document Cover
d. The white plastic pressure bar located to the left of the white plastic pad.
B3. Close the Document Cover.
B4. Test the machine by making a copy of a blank sheet of paper using the ADF (Automatic Document Feeder) and a copy using the Flat Bed.
a. To make a copy using the ADF, place the document face UP in the ADF, press the COPY mode key located below the LCD display and then COLOR START. If the problem continues,repeat Steps 2b and 2d at least 3 additional times.
b. To make a copy using the flat bed, lift the Document Cover of the flat bed, place the document face down on the scanner glass (make sure the ADF is empty) and close the Document Cover. Press the COPY mode key located below the LCD display and then COLOR START. If the problem continues, repeat Steps 2a and 2c at least 3 additional times.

Oct 29, 2010 | Brother MFC-9440CN Laser Printer

1 Answer

Red/yellow line down left side of document when using feeder


the solution to this issue is cleaning the scanner glass below the automatic document feeder(mind you its not the scan bed that you normally use while copying) .you will get the ADF scnner glass once you lift the ADF door,you will see a 1 inch wide scanner glass.that is what you need to clean.

If you want any further support a technician can help you online for free.You can find free online technical support at http://tinyurl.com/m7ghqz

Jun 13, 2009 | HP OfficeJet 7410 All-In-One InkJet...

1 Answer

Line down the scanned document on a HP LAser Jet 3050


If you are scanning using the Auto Document Feeder be sure to clean the glass where the documents get scanned. A small speck will cause a line down the page. On HP there is often a narrow strip of glass on the left side of the platen glass.

Apr 10, 2009 | Brother IntelliFAX 4100 Laser Fax

3 Answers

Black line on document when I scan from platen or ADF or scan to save as PDF.


As a tech I've never seen that happen. from the doc feeder only Yes, not both the feeder and the glass but not show up when you print from the computer ?????????

For sure there is a dot or something on the small strip of glass, only when you do it from the feeder.
the reason is that the document is moving and the dot on the "small" strip of glass now looks like a line to the copier.

You said it also does it when you lay it down on the glass !!??(platen) that should of indicated the drum has a ring around it, but since it doesn't come out on the PC copy then the glass must have a line on it.

Oct 07, 2008 | Canon PIXMA MP830 All-In-One InkJet...

1 Answer

Line down center of page.


Hi Sherrey, I think I can help! If you open the ADF cover where you insert your pages to make a copy. You will see a scanner glass about 1/2 inch wide and runs across the width of the printer. You can take a soft towel and some glass cleaner and clean the glass. There will probably be some white build up that looks like white out on the glass just make sure you clean it very well. I hope this helps!!!!

Dec 04, 2007 | Brother IntelliFAX 4750 Plain Paper Laser...

1 Answer

Brother MFC-5440CN Printer Problem


If this only happens when you are copying.

1. Your scanner glass is dirty. Open the lid, use windex to clean the flatbed. Look on the left side. You should see a strip of glass, with the scanner sitting under it. This strip is used when the document feed is being used. Make sure it is clean. Most common problem is getting a little whiteout or the sticky residue from scotch tape on this glass, which causes lines down your copies.

Clean it with alcohol which will dissolve the sticky stuff and the whiteout.

If this does not solve the problem, the CCD scanner in your machine might be going bad.

Oct 24, 2006 | Brother MFC-5440CN All-In-One InkJet...

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