Question about Brother MFC 7840W Printer

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Brother 7840w keep getting paper jam inside open front door and remove paper from drum, I cleared jam and try printing same error again I change durm and still no good.

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  • 140 Answers

Most jams in this area of a printer are caused by two things: The Pickup Roller and the Separation Pad in the Tray. You can clean the roller with a coffee filter and water or use a non-amonia based cleaner. I suggested the coffee filter for several reasons:
Cheap, Lint Free & Durable. Now as to the Separation Pad: Rough up the pad with a sharp knife [lightly please!] or rub with steel wool. this should be done if the pad feels slick when you rub you finger over it. Also, check the registration sensor flag which is usually just under the toner cartridge or just before it. If that flag is sticking, or slow to return to its correct position, the signal detects its late and stops all paper movement thinking it's jammed.

Posted on Oct 22, 2013

Testimonial: "thanks for you respond, but after trying several different steps I found that if I print using just 1 page in the paper door or the manual feed it prints ok. Now I questions is what sensor is failing."

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Posted on Jan 02, 2017

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SOURCE: Brother DCP-7020 Drum problems

Open the front of the printer by pulling on both tabs at the finger grips on both sides of the front panel. The front panel will flip down. The drum and toner cartridge comes out as a single unit. It is black plastic within gray plastic and has a handle like grip in the middle. Grasp this grip and pull the unit up and out. It feels kinda funny the first time you do it and you may feel like it will break, but it won't. Pull it up and out in a kinda circular arc. Do not touch the drum. If you ever need to replace the toner cartridge, press on the blue tap and separate the drum from the toner cartridge. You will have to replace the drum after every five toner cartridge replacements so practice doing it now. Note the tabs and slots on the sides before separating the drum and cartridge. Align the cartridge into the drum carriage and slide it in until it clicks. To replace the cartridge assembly into the printer, angle the cartridge at about 45 degrees and rotate in while pushing. It should click into place. If the front door then closes properly, you should have it in properly. Practice a few times and you should be an expert. For paper jams, there are many places to check and they may not all give warnings. First pull out the paper tray and check for and remove misfeeds. Remove the drum cartridge assembly and described here and check for and remove any paper. Open the back cover and check for and remove any paper. Open the automatic feed and check there as well as lifting the cover where the scanning surface is. Look in the rollers for the automatic feed for paper pieces. The last place almost never gives you a warning. Reach into the slot where the paper exits after being printed and grasp the whole top cover. Lift upward and it will open about 4 inches. This is a good place where small pieces of paper or even whole sheets may get stuck. Clean out any dust while you are there.

Posted on Oct 04, 2007

  • 13 Answers

SOURCE: How to clear a Machine Error 76

Error 76 is fuser error, you need to change the fuser but first just in case try to reset settings to factory defaults.

Posted on Nov 30, 2007

  • 50 Answers

SOURCE: how to remove toner drum on the Brother MFC-7840W

http://www.brother-usa.com/manuals/default.aspx?ProductID=MFC7420&ProductGroupID=5&WT.cg_n=Support&WT.cg_s=Manuals

Go to that link and download user manual or read their support pages

Posted on Mar 20, 2009

  • 7 Answers

SOURCE: Brother HL-2030 paper jam

1. Face the back of the printer. You may have to disconnect the cables. Just note their position for later reconnection. Open the rear cover.
2. Lower the forkish cover that is further in the back of the printer. It has a sticker on its left side.
3. There is a "finger" in the middle of the forkish cover that may not be in position. Note that there is on the mid-right side of it a tab, that has to be positioned to go down into the hole.
4. Close both covers and reconnect the wires if necessary.
5. It should now be working BS"D!!!

Posted on Nov 02, 2009

  • 24 Answers

SOURCE: my brother mfc-7840w printer keeps telling saying

The drum is the photosensitive roller that the image is charged onto so I'm afraid cleaning the corona wire won't help. If the drum is removeable try reseating it, otherwise it looks like you may need to buy a new drum kit for it.

Posted on Apr 28, 2010

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Paper keeps jamming


dear friend this printer is brand new/ old. if old how much old?

Jun 27, 2013 | Brother MFC 7840W Printer

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Mfc 7840w keeps jamming


use a 20lb paper in lieu of regular copy paper, works for me

Jan 21, 2013 | Brother MFC 7840W Printer

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Drum error


try this trick, open then the front cover and remove the drum&cartridge assembly then reinsert while the cover is open press clear/back key and will ask you 'replace a new drum' just answer yes by clicking an arrow up

May 31, 2011 | Brother MFC 7840W Printer

1 Answer

Ready and alarm lights keep blinking. will not print


Service manual: ready and alarm blinking :
Paper Jam
Clear the paper jam and press the panel button if the printer
does not automatically resume printing.
Misfeed:
Re-install the paper and press the panel button.

Clear the jammed paper inside the printer. Press the panel button
if the printer does not automatically resume printing.

check the sensors:
1) Turn off the printer power switch, open the front cover, and remove the drum unit.
2) Turn on the printer while pressing the control panel button. The Drum LED comes ON.
3) Lightly press the panel button again.
Alarm LED is ON = Front registration sensor is turned ON.
4) Press and release the panel button again.
Drum LED is ON = Paper eject sensor is turned ON.

If sensors are On, paper is being detected, Off- no paper


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

Feb 21, 2011 | Brother HL 1240 Printer

1 Answer

DRUM ERROR - HAD PAPER JAM, CLEARED THAT AND NOW IT WILL NOT PRINT - KEEP GETTING DRUM & ERROR


Sorry to hear you are having problems. Printers can be very frustrating at times. Below is a description of how to complete clear paper jams paper can get jammed it there pretty tightly and in very small places. Ensure you've followed all the steps to clear your paper jam and you should see your printer start working again. Refer to your user guide (or download via the link provided at the bottom) for illustrations.
  1. Open the front of the printer.
  2. Slowly take out the drum unit and toner cartridge assembly. Some of the jammed paper will be pulled out with the drum unit and toner cartridge assembly.
  3. Set the drum unit and toner cartridge assembly on a piece of disposable paper or cloth in case you accidentally spill or scatter toner.
  4. To prevent damage to the printer caused by static electricity, DO NOT touch the electrodes inside the printer.
  5. Close the front cover.

    Note: Do not put the drum unit and toner cartridge assembly back in at this point.

  6. Pull the paper tray completely out of the printer.
  7. Pull the jammed paper down and out of the printer.
  8. Open the back cover (back output tray).
  9. Still looking at the back of the printer, pull the tab toward you to open the fuser cover.
  10. Pull the jammed paper out of the fuser unit.

    HOT SURFACE
    After you have just used the printer, some internal parts of the printer will be extremely hot. Wait for the printer to cool down before you touch the internal parts of the printer.

  11. Close the back cover (back output tray).
  12. On the drum unit you set aside, push down the green lock lever and take the toner cartridge out of the drum unit. Clear the jammed paper if there is any inside the drum unit.


    CAUTION
    Handle the toner cartridge carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold water at once.

    To avoid print quality problems, DO NOT touch the roller part of the toner. Try to keep you hands, fingers and everything else away from there.

  13. Put the toner cartridge back into the drum unit until you hear it lock into place. If you put the cartridge in properly, the green lock lever will lift automatically.
  14. Open the front cover. Put the drum unit and toner cartridge assembly back in the printer.
  15. Put the paper tray firmly back in the printer.
  16. Close the front cover.
  17. Make sure that the Error LED is now off.
http://www.brother-usa.com/ModelDocuments/Consumer/Users%20Manual/UM_HL_2140_2170W_EN_1160.PDF

Jan 27, 2011 | Brother HL-2170W Laser Printer

1 Answer

I have this model printer (brother mfc-7840W) and i'm getting an error on the screen-it says Drum Error. See troubelshooting and maintenance chapter in the user manual


If you have the manual follow the steps for trouble shooting.
It will tell you to remove the drum, remove toner, clean corona wire and reinstall. If that does not solve the issue it will recomend replacing the drum. You can check your drum life by going to menu- press machine info, choose option 3 drum life and press ok. This will show you the remaining percentage of your drum if the number shows less than 25% replace the unit.
If it shows more than 50% you can reset the drum counter allowing the machine to read it as a new unit.( Bare in mind this will change the usage meter back to 100%, you will have to keep an eye out for print defects or light pages as this will signal the end of the drum life) to reset page counter remove the drum from the machine, with the front door open press Clear/back until the lcd displays reset drum yes? no? press 1 for yes and reinstall drum. The machine will cycle until ready; if this still has not cleared the message you will need to contact brother for a manual reset or service.

Jan 05, 2011 | Brother MFC 7840W Printer

1 Answer

Drum error message


To reset MFC-7840W drum count use the following steps.

1. open the front cover (leave open).
2. Press clear/back.
3. Then confirm the new drum install by pressing 1.
4. The display will indicate accepted.
5. Then close the front cover.

This should be done each time the drum unit is replaced.

Jun 18, 2010 | Brother MFC 7840W Printer

1 Answer

PAPER JAM MESSAGE APPEARS WHEN THERE IS NO PAPER JAM


Please follow the directions below to clear the paper jam error orincase there is one somewhere.

Turn off the Printer. Remove the drum and toner from the front cover. Remove the toner from the drum. Look inside machine incase of possible paper jam. Open back cover and paper tray incase of jam. Close all doors and put toner and drum back in machine. Turn on the printer, and see if the error message is gone.

Apr 04, 2010 | Brother MFC 7420 All-In-One Laser Printer

1 Answer

UNIT KEEPS ASKING FOR NEW DRUM EVEN AFTER I INSTALL. ALSO PAPER JAM MESSAGE KEEPS COMING UP


The drum error can be cleared by opening the front door and pressing either the options or menu button. It will ask if it's a new drum and you press 1 for yes. Your paper jam error you will have to look where it's jamming and remove scraps, without seeing it myself I can't tell you what to do to fix it.

Jan 28, 2010 | Brother DCP-8045D All-In-One Laser Printer

1 Answer

Drum error


With that error you need to remove the drum, run the little blue tab on top back and forth about 20 times, blow out the area below the blue tab, and re install and try printing again. If the error is drum life end you need to open the front door and press either menu or options, sometimes the clear/back button and tell it it's a new drum.

Dec 30, 2009 | Brother MFC 7840W Printer

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