Toner droppings on right hand side of paper. about 1/4 inch tall and 1/2 inch wide. five of them. Am using Lexmark Toner Cartridges obtained from Staples. Replaced the toner cartridge in hopes that it would fix it. Didn't. Frustrating as I love the printer

THE PAPER SELECT ARE NOT COMPATABLE, SELECT LGL IS EQUAL TO 8.5/14 FLSC IS EQUAL TO 8.5 /13. TRY TO SELECT BLACK COLOR OR CLEAN YOUR DEVELOPING UNIT.

there are typically a few causes of this.

1 - low toner

2 - charge and transfer rollers need to be replaced

3 - high voltage power supply is failing

the first 2 can be checked and fixed very easily

take the toner out and give the toner a shake and replace into the printer.


remove the toner, drop the front door down a couple inches and you will see the charge roller attached to the 2 arms drop down from the top of the printer in the toner bay. if the roller is yellow or orangish it needs to be replaced because the roller should be gray in color. hope this helps!

Start a print or copy, and just as the trailing edge of paper is entering the machine; quickly open it to stop print and take out the cartridge and look at the drum and the paper underneath. If the issue is there at that point then it would point to the cartridge. If not then it is in the fuser area.

Clean the loose toner up with a dry lint free cloth.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

1. Take the toner out and shake it side to side so you even the toner level in the cartridge.
2. If this won't fix it, check toner level, might be low. If low, you need to replace toner.
3. Last option, you might have to replace the Photoconductor Unit.

Don't know about your "primed" toner, but go to Diagnostics and run the PQ test. See what that looks likes. Go to Disable Cartridge Check and swap the black and cyan toner. Run another PQ test. Are the lines still there and are they black or cyan? If they are cyan, the cartridge is bad. If they are black it's not the cartridge. It going to take a tech to look at it.

This is more than likely down to the upper roller in the fuser assembly. It's the heat roller at the back of the printer. The upper roller wears so paper dust and toner stick to the roller which then can get deposited back on to the page.

1. Openthe front cover and pull out the drum unit. Place the drum unit on a drop clothor large piece of disposable paper to avoid spilling and scattering the toner.


2. Holddown the lock lever on the right and pull the toner cartridge out of the drumunit. Handle the toner cartridge carefully. If toner scatters on your hands or clothes,immediately wipe it off or wash it with cold water.


3. Unpack the new toner cartridge.Place the used toner cartridge into the aluminum bag and discard it accordingto local Regulations.

4. Gently rock the toner cartridgefrom side to side five or six times. To distribute the toner evenly inside thecartridge.

5. Remove the protective cover.

6. Insert the new toner cartridge inthe drum unit until it clicks into place. If you put it in properly, the locklever will lift automatically.

7. Clean the primary corona wire inside the drum unitby gently sliding the blue tab from right to left several times. Return the Bluetab to the Home position (▼) before reinstalling the drum Unitand toner cartridge assembly.

8. Reinstall the drum unit and tonercartridge assembly and close the front cover.

hello! It sounds like the imaging drum is damaged. In some toner carts (especially by HP) they have the drum built right in the cart. And when a new cartridge is installed and when they are replaced can rule out a bad drum. In this case It must be separate. You should be able to remove the image drum and inspect it. Just don't touch the drum with bare hands! This can also be a symptom of three other things. It can also be the drum that heats the toner onto the paper. It could be dirty and that is tricky to repair along with the fact is that toner could be being scraped off the paper before being hardened as well. This line streak can be traced to a foreign material in beween the pinch rollers, it is a good idea to see if a piece of ripped paper is stuck inside. Finally, it could be electronic failure with the laser module; scanning electronics. That is bad news!

Hi, This worked for us:

The message "Toner Error" is usually caused by the drum and/or toner
cartridge not being installed properly or if the machine does not
recognize the toner. To clear this message, follow the steps listed
below:

1. Verify you are using Genuine Brother Cartridges. Brother strongly
recommends that you do not refill the toner cartridges provided with
your machine. We also strongly recommend that you continue to use only
Genuine Brother Brand replacement toner cartridges. Use or attempted use
of potentially incompatible tone cartridges in the Brother machine may cause damage to the machine and/or may result in
unsatisfactory print quality. Our warranty coverage does not apply to
any problem that is caused by the use of unauthorized third party toner
and/or cartridges. To protect your investment and obtain premium
performance from the Brother machine, we strongly recommend the use of
Genuine Brother Supplies.

2. Make sure that you are using the correct drum and toner cartridge(s)
for your machine. The part numbers for your model are as follows:
NOTE: Some cartridges can look EXACTLY the same among different models
and will fit the machine even if they are not designed for use in that
model. Verify the part number before using the cartridge(s).

TN550: Toner cartridge (standard)
TN580: Toner cartridge (high yield)
DR520 = Drum unitt.

3. Make sure that the cartridge is not damaged. Remove the toner
cartridge by following the steps listed below:

a. Press the cover release button and then open the front cover.

b. Remove the old drum unit and toner cartridge assembly. Place it on a
drop cloth or disposable paper to avoid scattering toner.
NOTE: Be careful not to spill the toner. If toner gets on your
clothes or hands, wipe or wash it off immediately with cold water.

c. Hold down the blue lock lever on the right and pull the toner
cartridge out of the drum unit.

d. Look at the toner cartridge and see if any parts or pieces appear to
be broken or missing, if so, the cartridge may be defective and should
be replaced.

4. If the toner cartridge is not damaged, reinstall it into the drum
unit. If it was damaged, use a new toner cartridge and reinstall it into
the drum unit.

5. Reset the drum/toner unit into the machine.

6. Close the front cover.

7. If the message "Toner Error' continues to appear on the display
unplug the machine from the wall outlet.

8. Open the front cover and remove the drum and toner assembly.

9. Look inside where the drum was. On the left side wall, look for a
small, black plastic lever/actuator. A flashlight may help see it.

10. Using the palm of your hand, slide it along the left wall in and
out a few times as this may free up the actuator/lever in case it is
stuck. The actuator/lever is spring loaded and needs to move back and
spring forward to operate correctly.

If the lever does not move, spring back or is missing and your machine
is within warranty, you can locate a Brother Authorized Service Center
(ASC) in your area or contact Brother Customer Service by calling
1-877-Brother (1-877-276-8437) Monday through Friday, excluding
holidays. If the machine is out of warranty, you can locate a Brother
Authorized Service Center using the information listed above.

If the lever moves freely and springs back to its original position
continue to Step 11.

11. Reinstall the drum and toner assembly, close the front cover and
plug the machine in.

To clear white vertical lines from printed documents follow the steps listed below:

NOTE: The use of non-Brother or generic toner may cause white vertical lines.

Brother strongly recommends that customers do not use generic drum units 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.

1. First, power OFF the unit for safety. The ON/OFF switch is located on the left, rear side of the unit.

2. Open the scanner cover by pulling the blue lever located below the control panel toward you and lifting the cover. Make sure the cover is completely open.

3. Remove the drum unit by holding each side of the drum by its handles and gently lifting the drum forward (toward) you.

4. Place the drum unit on a drop cloth or large piece of disposablepaper to avoid spilling and scattering the toner. Make sure thedirections and DR-250 stickers are facing you.

5. With the drum removed from the Brother machine, clean the laser glass. The laser glass is located inside the Brother machine where the drum was located. It is a piece of glass, about 1/2 inch wide and approximately 8 inches long, located on the bottom of the inside. Gently wipe the glass with a clean soft DRY cloth. DO NOT use isopropyl alcoholor any liquid to clean the glass.

6. Gently pull up on the mauve lever to turn the toner cartridge toward you until it stops. Remove the toner cartridge from the drum unit by gently sliding it out of the drum unit. ***Handle the toner cartridge carefully. If toner scatters on your hands or clothes, immediately wipe it off or wash it with cold water.

7. Gently rock the toner cartridge from side to side five or six times to distribute the toner evenly inside the cartridge. Then, reset the toner into the drum (be sure it clicks into place). Gently push on the mauve lever to turn the toner cartridge away from you until it stops.

8. With the DR-250 sticker facing you turn the drum upside down. There is a blue tab located on the right side. Slide the blue tab back and forth seven times to clean the corona wire. When finished, make sure the blue tab is locked to the right side of the drum.

9. Reset drum unit in Brother machine. Close the cover securely.

Print the help list to test the unit by pressing the REPORTS key located on the control panel and then (1) on the dial pad.

If the white vertical lines still continue, the drum unit will need to
be replaced.

If the purchase date of the original drum or replacement drum is less than 90 days (within the warranty of the drum), contact Brother Customer Service Center at 1-877-Brother (1-877-276-8437) . The center is open Monday-Friday, 9:00am to 7:00 pm EST, excluding holidays.