I put an envelope in the printer since then its doesn?t work, I tried to restart, change the drum and push in a paper by the special slot and it still doesn?t work. Just the motor is turning and the excess fan is working constantly

Brother Hl 2140 Printing on thick paper, labels and envelopes 2
When the back output tray is pulled down, the printer has a straight paper path from the manual feed slot through to the back of the printer. Use this paper feed and output method when you want to print on thick paper, labels or envelopes.


Open the back cover

Open the manual feed slot cover.

Using both hands, slide the manual feed slot paper guides to the width of the paper that you are going to use.

Using both hands, put one piece of paper or one envelope in the manual feed slot until the front edge of the paper or envelope touches the paper feed roller. When you feel the machine pull in the paper, let go.

• Put the paper into the manual feed slot with the side to be printed face up.
• Make sure that the paper or envelope is straight and in the proper position on the manual feed slot. If it is not, the paper or the envelope may not be fed properly, resulting in a skewed printout or a paper jam.
• Do not put more than one piece of paper in the manual feed slot at any one time, as it may cause a jam.
• If you put any Media (paper, envelope and so on) in the manual feed slot before the printer is in the Ready state, the media may be ejected without being printed on.

Generally, since you have not mentioned what printer you are using, remove all the paper.

Slid the enveople into the bottom of the paper tray, face side down (flap up) and the flap to the left. Push the envelope to the right side of the tray and as far forward until it stops.. On the left side, you may have a rail that will slid to the right against the envelope.

or The paper tray may have a slot on the right near the back. Slid the envelope into that slot, flap up and to the left, as far as it will go.

Once the envelope is put in place, run the software that you use to print.

Good luck!

To load paper or other media in the Manual Feed Slot (directly above the Paper Tray)

You can load envelopes and special print media one at a time into this slot. Use the manual feed slot to print or copy on labels, envelopes or thicker paper.

1. Slide the paper guides to fit the paper size.
2. Using both hands put one sheet of paper in the manual feed slot until you feel the front edge of the paper touch the paper feed roller. Let go of the paper when you feel the machine feed the paper in a short distance.



Note: When you put paper in the manual feed slot, please remember the following:
■ The side to be printed on must be face up.
■ Put the leading edge (top of the paper) in first and push it gently into the slot.
■ Make sure that the paper is straight and in the proper position on the manual feed slot. If it is not, the paper may not be fed properly, resulting in a skewed printout or a paper jam.
■ Do not put more than one sheet or envelope in the manual feed slot at a time or you may cause the machine to jam.
■ You can remove smaller sizes of printed paper from the output paper tray more easily if you lift the scanner cover using both hands as shown in the illustration.

You can still use the machine when the scanner cover is raised. You can return the scanner cover to its home position by pushing it down with both hands.



If you would like to disable Manual Feed Mode, check that the manual feed mode is not selected in the printer driver.

Here is a copy of the User's Manual for the Brother MFC-7820N.


I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Hi. The reasons listed in the manual that cause the LED to flash normally are:

Front cover is open
Close the front cover of the printer.
Back cover is open
Close the back cover of the printer.
Paper jam
Clear the paper jam. See Paper jams and how to clear them on page 6-5.
If the printer does not start printing, press the Go button.
No paper fed manual feed slot
Put the paper in the manual feed slot. See Printing on plain paper, bond paper
or transparencies from the manual feed slot on page 1-10 or Printing on thick
paper, labels and envelopes from the manual feed slot on page 1-13.
Memory full
The printer memory is full and the printer cannot print full pages of a
document. See Solving print problems on page 6-15.
Print overrun
A print overrun occurred and the printer cannot print full pages of a document.
See Solving print problems on page 6-15.
Drum Error
The corona wire needs to be cleaned. See Cleaning the corona wire on page 5-14.

If you check out page 6-5 it tells how to clear the paper jam from the rear of the machine! A point often missed.

Check out the website below if you don’t have a copy of the instruction manual =

http://welcome.solutions.brother.com/BSC/public/files/dlf/doc002089/US_Eur.pdf

If all else fails, try a reset of the printer Drum & Page counter:

1. With printer tuned on.
2. Press and hold the “internal button” behind front cover, until all LEDs illuminate.
3. Make sure Drum light is off, then release and close front cover.

Hope some of this helps………..Please post a response back here and let us all know if it works?............Regards, Cornwellnet (UK)

Please try these steps:

1. Turn the printer off and open the access cover.
2. Look for any obstructions in the paper path and remove them if necessary. (It is possible to move the carrier assembly with the power off.)
3. Turn the printer on, load some paper, and press the Form Feed button.
4. Watch the paper as it feeds through and try to determine where the jam is occurring.
5. Check to see if all the rollers are turning.

If all the rollers are turning, there may be something in the feed path that you can't see. Go to step 6.
If not, there is probably a feed motor or a gear problem and the printer may require service.
6. If the paper is jamming under the carrier assembly, you may be able to fix it using the manual feed slot.
7. Turn the printer off.
8. Take a #10 envelope and feed it through the left side of the manual feed slot until it comes right through the printer to the back of the exit rollers.
9. Move it up and down first, and then slowly move it over to the right side. If something is stuck under the black guide plate, this may work it loose.

nstructions Use the following steps to ensure that you are ready to print envelopes. Your printer can have either a single envelope or multiple envelopes loaded and ready for printing.

• If you are printing a single envelope, you can use the single envelope slot and leave your paper in the lower (IN) tray. This allows you to print the envelope and then a letter.
• If you are printing a stack of envelopes, use the lower (IN) tray for loading the stack of envelopes.

To Load a Single Envelope

1. Do not remove the paper from the lower (IN) tray. Be sure the card guide is in the down position, before using the single envelope slot.
2. Remove a single envelope from its packaging.
3. Slide the envelope evenly into the single envelope slot. The single envelope slot is located on the right side of the upper (OUT) tray. The envelope should be loaded with the address side down (flap side up).
4. Make sure the creased flap edge of the envelope aligns with the right side of the single envelope slot.
5. Slide the envelope through the slot until it stops. Make sure the envelope is not bent and is straight in the envelope slot.
   NOTE: To minimize print skew, use envelopes with rectangular flaps rather than triangular flaps.

To Load Multiple Envelopes

1. Slide the paper width adjuster to its leftmost position.
2. Pull out the paper length adjuster and remove any paper from the IN tray.
3. Remove up to 20 envelopes from their packing and tap the short edge of the envelopes on a flat surface to even the stack.
4. Slide the envelopes evenly into the IN tray, address side down (flap side up).
5. Slide the paper width adjuster to the right until it gently touches the left edge of the envelope stack.
6. For size Invitation A2 and C6 Envelopes, press the inside of the paper length adjuster handle to release and lower it.
7. For all sizes of envelopes, push the paper length adjuster in toward the envelopes until it stops. Make sure the envelopes are flat in the lower tray and not bent.

Set up the Printer Properties

1. Select Start on the taskbar. Choose Settings, then Printers. Right-click the printer. Select Properties from the pop-up menu.
2. Select the Paper or Setup tab depending on the version of the printer driver software.
3. In the Paper Options section, select the desired envelope size from the Paper Size drop-down box.
4. Click OK.

Print Print the envelope from your chosen program. From most applications, just select the File menu, then choose Print. After Printing the Envelopes Reset the printer and the printer properties for the kind of printing you will be doing next.

1. Remove any remaining envelopes from the lower (IN) tray.
2. Slide the paper width adjuster to its leftmost position.
3. Load the desired paper into the lower (IN) tray.
4. On the computer, Select Start on the taskbar. Choose Settings, then Printers. Right-click the printer. Select Properties from the pop-up menu.
5. Select the Paper or Setup tab depending on the version of the printer driver software.
6. In the Paper Options section, select the desired paper size from the Paper Size drop-down box.
7. Click OK.

Use the manual feed slot to print or copy on labels,
envelopes or thicker paper.

Slide the paper guides to fit the paper
size.

Using both hands put the one sheet of
paper in the manual feed slot until you
feel the front edge of the paper touch the
paper feed roller.

Let go of the paper
when you feel the machine feed the
paper in a short distance.

did you put these envelopes right way (portrait/landscape) also you have to change in printer menu paper source paper type from plain paper to envelope.

Must use Tray 1 bpass to feed labels, on word change media type to envelopes ie page size,paper type and on printer set tray1 paper type to envelopes