Question about Brother MFC 420CN All-In-One InkJet Printer

1 Answer

MFC-420CN scanner error

Printer is connected by Lan connection. When trying to scan either with the PC or directly on the printer I receive the following error message. "Unexpected data has been received. Please turn the device OFF and then turn it ON again. Then restart your PC and try the scan again.[TW004]" I have done this several times but still get the error.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 832 Answers
Re: MFC-420CN scanner error

This might be a hint: another one is this:

Posted on Oct 05, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Have a brothers mfc 420cn using windows

go to printers and faxes (where the printer is displayed). make sure the printer is turned on. you should see a place which indicates some thing like get pictures from scanner. click on it to scan. additionally open my computer to see if the printer scanner image is showing. you right click and select get pictures using wizard from the right click context menu.
good luck

Jul 04, 2010 | Brother MFC 420CN All-In-One InkJet...

1 Answer

I have a brother MFC 9440CN when I try to scan a document the error message comes up as not being connected to pc. The cable is definitly connected as the print option works fine. Can you help. Thank you.

Are you scanning from the PC, or are you scanning from the printer?

If the latter, the scanner is trying to send the document to a server software on the PC, which is probably not running; hence the "not connected" message.

Try acquiring a picture using Control Panel -> Scanners -> Acquire Image and see if it works. If it does, you must run (or reinstall) the Control Center software, and configure it as to where to store the Scan-to-File documents.

Nov 02, 2009 | Brother MFC-9440CN Laser Printer

1 Answer

I am trying to scan and fax a paper and it is asking for me to check connection

Check both ends of the USB lead are firmly in place in the scanner and at the computer.
Turn off the MFC-4200, leave 10 seconds & turn back on. Reboot the computer.
That should sort the problem,

Oct 30, 2009 | Brother MFC 420CN All-In-One InkJet...

1 Answer

How to scan with brother mfc 7840w

Just put the scan job in the scanner and press the scan tab in your printer the scan image will appear in your directly connected machine/pc.

Oct 24, 2009 | Brother MFC 7840W Printer

3 Answers


I had the SAME problem. I have 3 pc laptops and 1 Mac. The Mac could still print, but the pc's were hosed. I called BrotherUSA and this fixed the problem!

Go to your printer and after making sure it's connected to the network with the Ethernet cable, go to Menu > Print Reports > Network Config. This will print a page that shows your printer's IP address. We need to config that address in your Printer, Fax and Scanner settings in Control Panel.

Go to Control Panel > Printers & Faxes. Right click on your printer > Properties > Ports tab. Click Add Port and select Standard TCP/IP Port. Click New Port and click Next on the wizard. Enter the IP address of your printer in the first field (the second one will auto-fill). Click Next and Finish. Printer's done!

Right click on your PC-FAX in Printers & Faxes and Properties. Click on the ports tab and just check the box that you just created for Standard TCP/IP Port. Click OK. Fax is done!

Go back to Control Panel and select Scanners & Cameras. Right click on your printer/scanner > Properties > Network Setting tab. Select the Specify your machine by address radio button and, if it's not already in there, enter the IP address of your printer. Click OK. Scanner's done!

This will work as long as your router is running. You may need to repeat this process after a power outage or if you need to reboot your wireless router. Not too bad, though! I just wish everything was as easy as a Mac!!!

Jun 25, 2009 | Brother MultiFunction Center MFC-440CN...

3 Answers

Unable to scan

I encountered the same problem (prints but won't scan) over a network connection. A download from Brother got it working again. The filename is BrRegDev.EXE and it is available free at:

If the link doesn't work, try searching for the filename using Google (for example).

XP Device Manager still lists "MFC-420CN LAN #2" (even though there has only ever been one), but at least it scans now.

Mar 17, 2008 | Brother MFC 420CN All-In-One InkJet...

2 Answers

Brother Mfc 420cn says machine error AF

Open the small cover that hides the scanner flat cable. It has to be reconnected to the main pcb.

Oct 23, 2007 | Brother MFC 420CN All-In-One InkJet...

3 Answers

Printer message: Unable to Print

5A means that the purge cam stopps abnormally when it is in use. This could be of a broken cam shaft. You have to replace the whole purge unit. This is a service job to do!

Aug 27, 2007 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Osx 10.4 scanner

Have you tried a new driver? Did it work before? What program are you using to try your scanning?

Jun 22, 2007 | Brother MFC 420CN All-In-One InkJet...

Not finding what you are looking for?
Brother MFC 420CN All-In-One InkJet Printer Logo

1,036 people viewed this question

Ask a Question

Usually answered in minutes!

Top Brother Printers & Copiers Experts

Jim Yeh

Level 1 Expert

15 Answers

Jesus  Colon
Jesus Colon

Level 1 Expert

12 Answers

Rick Johnson
Rick Johnson

Level 2 Expert

84 Answers

Are you a Brother Printer and Copier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides