Question about Brother MFC 7840W Printer

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Plugged in new printer and it doesn't print - Brother MFC 7840W Printer

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Did you follow all of the installation instructions,
including the instructions to remove some clear plastic tape that prevents ink from leaking-out while the unit is being transported (or while sitting on the shelf at the retail store) ?

Does your computer show the device as correctly installed, and "online" ?

Posted on Sep 10, 2009

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1 Answer

Printer will not print


If unplugging and re-plugging the printer into your computer doesn't help, try the steps below:

  1. Disconnect the USB cable connecting the printer from your computer.
  2. On your computer, go to Control Panel > Printers and Faxes.
  3. Delete the Lexmark print object.
  4. Reboot computer.
  5. Re-brick your printer by pulling out the power supply - black box where the power cord is plugged into on the back of the printer, and re-plug after 30 seconds.
  6. When the printer turns on, reconnect it to the computer.
  7. Wait until your computer fully recognizes the USB connection. To check, go to Control Panel > Printers and Faxes. If you see a new Lexmark print object in the list, try to print a document to verify that the problem is fixed.

You may also try to update your printer driver by visiting the Lexmark website at http://bit.ly/eVzv1x. Select your operating system, download and execute the file.

Feb 14, 2012 | Lexmark X5650 All-in-One InkJet Printer

1 Answer

Alignment problem error message.


It could be due to cartridges in the printer. Try the steps below to identify and fix the problem:
  1. Make sure the printer is on.
  2. Open the printer cover. The print cartridge carrier moves and stops at the loading position, unless the All-In-One is busy. Note: If the carrier does not automatically move to the center, turn off the printer or unplug the printer from the power source and then carefully slide the carrier to the center.
  3. Remove both cartridges from the carrier.
  4. Close the printer cover.
  5. Re-brick your printer by pulling out the power supply - black box behind the printer where the power cord is plugged in to, and re-plug after 30 seconds.
  6. When the printer turns on, reinsert one cartridge first. Close the printer cover and check for any errors.
  7. If no error appears, reinsert the other cartridge. Close the printer cover.
  8. Replace whichever cartridge is causing the error to appear with a new genuine Lexmark cartridge. Try to print a document again to verify that the problem is fixed.
If that doesn't help, try this approach:

Try to re-seat the cartridges in the printer. Open the printer cover > remove the cartridges > close the printer cover > re-brick you printer by pulling out the power supply - black box behind the printer where the power cord is plugged in, and re-plug after 10 seconds. When the printer turns on, reinsert the cartridges and close the cover. Try to print a document again to verify that the problem is fixed.


If that doesn't help, the problem could be due to a clogged print cartridge nozzle. Please follow the steps below to fix print quality issues with your model:

  1. On your computer, go to Start menu.
  2. Go to Programs.
  3. Go to Lexmark 4200 Series folder.
  4. Select Lexmark Solution Center.

From the Maintenance tab, select Align to fix blurry edges. Your printer will then print a page that will help align the cartridges.

Feb 10, 2012 | Lexmark X4270 All-In-One InkJet Printer

1 Answer

Changed the ink cartridge and now the printer doesn't recognize the computer.It says the printer is idle. What do I do?


A quick fix for most communication errors can be achieved by resetting the printer and/or rebooting the PC. Simply disconnect the printer from your computer (if USB connected)> reboot your pc > unplug and re-plug the printer into the power source to reset it. When the printer turns on, reconnect it to your computer (if USB connected). Then try to print again once the computer fully recognizes the USB connection or when the WiFi light on the printer turns solid green (if WiFi connected.).


If that doesn't help, try the steps below:

  1. Disconnect the USB cable connecting the printer from your computer.
  2. On your computer, go to Control Panel > Printers and Faxes.
  3. Delete the Lexmark print object.
  4. Reboot computer.
  5. Re-brick your printer by pulling out the power supply - black box where the power cord is plugged into on the back of the printer, and re-plug after 30 seconds.
  6. When the printer turns on, reconnect it to the computer.
  7. Wait until your computer fully recognizes the USB connection. To check, go to Control Panel > Printers and Faxes. If you see a new Lexmark print object in the list, try to print a document to verify that the problem is fixed.

Jan 29, 2012 | Lexmark X4650 InkJet Printer

1 Answer

Doesn't print the whole page


Try to re-brick your printer. Pull out the power supply, black box where the power cord is plugged in at the back of the printer, and put it back after 30 seconds.



If that doesn't help, try the steps below:

1. Disconnect the printer from your computer.

2. Re-brick your printer. Pull out the power supply, black box where the power cord is plugged in at the back of the printer, and put it back after 30 seconds.

2. On your computer, go to Control Panel > Printers and Faxes.

3. Delete the Lexmark print object.

4. Reboot your pc.

5. When your pc turns on, reconnect the printer.

6. Wait until your pc fully recognizes the USB connection. To check, go to Control Panel > Printers and Faxes. If you see a new Lexmark print object in the list, then try to print a document again to verify that the problem is fixed.

Oct 21, 2011 | Lexmark All-in-One Printer with PictBridge

1 Answer

My Lexmark z2300 sends to the printer & it says it's printing, but it doesn't actually print. I've tried several file types & programs to print from but none of them work.


A quick fix for most communication errors can be achieved by resetting the printer and/or rebooting the PC. Simply disconnect the printer from your computer. Reboot your pc. Unplug and re-plug the printer into the power source to reset it. When the printer turns on, reconnect it to your computer. Then try to print again once the computer fully recognizes the USB connection.


If that doesn't help, try the steps below:

1. Disconnect the printer from your computer.

2. Rebrick (pull out power supply, black box where the power cord is plugged in at the back of the printer, and put it back after 30 seconds).

2. On your computer, go to Control Panel > Printers and Faxes.

3. Delete the Lexmark print object.

4. Reboot your pc.

5. When your pc turns on, reconnect the printer.

6. Wait until your pc fully recognizes the USB connection. To check, go to Control Panel > Printers and Faxes. If you see a new Lexmark print object in the list, then try to print a document again to verify that the problem is fixed.

Sep 14, 2011 | Lexmark Z2300 InkJet Printer

1 Answer

It want print anything!


A quick fix for most communication errors can be achieved by resetting the printer and/or rebooting the PC. Simply disconnect the printer from your computer. Reboot your pc. Unplug and re-plug the printer into the power source to reset it. When the printer turns on, reconnect it to your computer. Then try to print again once the computer fully recognizes the USB connection.


If that doesn't help, try the steps below:

1. Disconnect the printer from your computer.

2. Rebrick (pull out power supply, black box where the power cord is plugged in at the back of the printer, and put it back after 30 seconds).

2. On your computer, go to Control Panel > Printers and Faxes.

3. Delete the Lexmark print object.

4. Reboot your pc.

5. When your pc turns on, reconnect the printer.

6. Wait until your pc fully recognizes the USB connection. To check, go to Control Panel > Printers and Faxes. If you see a new Lexmark print object in the list, then try to print again.

Sep 12, 2011 | Lexmark C533DN InkJet Printer

1 Answer

Print document system responds document is printing system responds that document is printed but no document is printed. Used troubleshooting for alignment and that works with printer?


A quick fix for most communication errors can be achieved by resetting the printer and/or rebooting the PC. Simply disconnect the printer from your computer. Reboot your pc. Unplug and re-plug the printer into the power source to reset it. When the printer turns on, reconnect it to your computer. Then try to print again once the computer fully recognizes the USB connection.


If that doesn't help, try the steps below:

1. Disconnect the printer from your computer.

2. Rebrick (pull out power supply, black box where the power cord is plugged in at the back of the printer, and put it back after 30 seconds).

2. On your computer, go to Control Panel > Printers and Faxes.

3. Delete the Lexmark print object.

4. Reboot your pc.

5. When your pc turns on, reconnect the printer.

6. Wait until your pc fully recognizes the USB connection. To check, go to Control Panel > Printers and Faxes. If you see a new Lexmark print object in the list, then try to print/scan again.

Aug 23, 2011 | Lexmark Z816 InkJet Printer

1 Answer

Wont print


A quick fix for most communication errors can be achieved by resetting the printer and/or rebooting the PC. Simply disconnect the printer from your computer. Reboot your pc. Unplug and re-plug the printer into the power source to reset it. When the printer turns on, reconnect it to your computer. Then try to print again once the computer fully recognizes the USB connection.


If that doesn't help, try the steps below:

1. Disconnect the printer from your computer.

2. Rebrick (pull out power supply, black box where the power cord is plugged in at the back of the printer, and put it back after 30 seconds).

2. On your computer, go to Control Panel > Printers and Faxes.

3. Delete the Lexmark print object.

4. Reboot your pc.

5. When your pc turns on, reconnect the printer.

6. Wait until your pc fully recognizes the USB connection. To check, go to Control Panel > Printers and Faxes. If you see a new Lexmark print object in the list, then try to print/scan again.

Aug 21, 2011 | Lexmark X4550 AllInOne InkJet Printer

2 Answers

Black PGBK doesn't print after switch to Windows7 x64


You have to make sure you're connected to the printer and the drivers are installed. If it's a direct connection to the printer, you solution is as easy as unplugging it, and plugging it back in. If it's a networked printer, then go to start > Devices and printers> and click the add new printer button near the top of the window.

Jun 19, 2011 | Canon PIXMA MP810 All-In-One InkJet...

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