Question about Brother MFC 7840W Printer

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Mfc 7840w won't accept 26 digits for wep code

Won't accept the 26 digits I enter for wep code. Seems that there isn't enough room for all the digits.

Posted by Anonymous on

6 Suggested Answers

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: "brother mfc 7840w printer goes offline and i cannot print need turn printer on and off.

The solution, and it took me a long time to find the simple solution, is to right click on your printer, click properties, click the ports tab and click on your Brother printer and click on configure port (or you can delete the existing one and then add another one). What you want to do is update the IP Address. The problem is that the printer does not have a static IP address, it is dynamic. If you want to confirm that, go to your printer and press the reports button and print out the network configuration report. Your IP address will show on that. It's really the last digit in the IP address that changes. This will absolutely solve your problem. Good Luck!

Posted on May 17, 2009

  • 37 Answers

SOURCE: problem with our Brother mfc-7840w toner all over the page

please check the life of your drum, probably that are the problem.

Posted on Sep 03, 2009

Jimsta01
  • 405 Answers

SOURCE: Will a Brother MFC-7840W wireless printer work

When entering the wep key, after each character is entered push the right arrow. If the same character repeats itself it will overwrite the other if you dont.

Posted on Mar 27, 2010

  • 1739 Answers

SOURCE: The manual that comes with my brother MFC-7840W

Information on the scanning function can be found here:

http://welcome.solutions.brother.com/bsc/public/as/au/en/faq/faq_list.html?reg=as&c=au&lang=en&prod=mfc7840w_all&Cat=107


In order to scan a multi-page document into a single file, you must configure the scan to use a file type that supports multi-page documents. For illustrated instructions of how to scan multiple pages into one file instead of each scan being saved as a separate file go to here:

http://welcome.solutions.brother.com/BSC/public/as/au/en/faq/faq/000000/002500/000078/faq002578_001.html?reg=as&c=au&lang=en&prod=mfc7840w_all&Cat=107




Posted on Feb 10, 2011

SuperTech-11
  • 1591 Answers

SOURCE: I HAVE A BROTHER MFC-7840W

Whenever it says "Enter" read this as "OK"
Why the printer doesn't just say "press OK" I couldn't tell you.

Posted on Mar 27, 2011

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Wep = Wired Equivalent Privacy this is basically a password to keep your wireless system secure

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Your code must be wrong, double check your password. If you have set it before , please reset the nertwork settings first.

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Brother mfc-7840W not picking up wireless IP address


It is common, mainly because the MFC connection is lost to your PC. Are you able to print or scan from another wireless PC that you have? If yes, contact your network admin or router oem. If no, reset network card. Run the Setup Wireless Wizard. Make sure you have router info such as SSID, Network Security Key, Authentication Method (Open, Shared, WPA/WPA2-PSK), Encryption (None, WEP, AES, TKIP). Enter those info, it must be CASE SENSITIVE. Just in case you dont know your router info, contact your router oem.
For Advanced Users.1. Click your Wireless Icon at Task Tray2. Right-Click your Wireless Network Name3. Select Properties4. Go to Wireless Security Settings5. Take note of the settings that you have there and enter it again on your MFC
Goodluck! If you still need more assistance. Call us 1-877-Brother. :)

Jan 03, 2012 | Brother MFC 7840W Printer

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How to enter WEP passkey for router when there are 4. using HP210


On your router set up interface you will find the wireless network key.
If it is WEP then it will show you WEP Passphrase and WEP Key.
You need to type in WEP key and not the passphrase. WEP key is 10 or 26 digit Hexadecimal number. You need to enter this 10 or 26 digit number.
open the set up page of the router and check the wireless settings of the router.

Click here for more information about the router and networking

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1 Answer

Where is the enter key at it dosent show on the i have a mfc-7840


When you're done entering in the key hit the right arrow button - It will turn the last digit to a * then hit ok, it will then ask you to accept - I fought for 3hrs to figure this out - LOL - Hope it helps

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Will a Brother MFC-7840W wireless printer work with a Netgear RangeMax Next Wireless Router (WNR854T)? My Toshiba laptop setup was a breeze with this router. I'm having trouble connecting the printer to...


When entering the wep key, after each character is entered push the right arrow. If the same character repeats itself it will overwrite the other if you dont.

Dec 10, 2009 | Brother MFC 7840W Printer

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Printer will not accept the WEP encription code during setup wizard. We have double checked the code and it is correct


you may have been putting the passphrase and not the hexadecimal equivalent network key. you should be inputing hex chars (0-9, A-F).

For 64-bit WEP: 10 hex characters
For 128-bit WEP: 26 hex characters

Hope this helps!

Sep 17, 2009 | Brother MFC 7840W Printer

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Try setting your wireless security on WPA2 instead of the WEP. This is also supposed to be a more secure incryption.

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Brother MFC-7840w wireless printer won't connect to network


Ignore the instructions that come with the printer, choose Open System, then choose WEP, enter, and it hooks up. Thanks to the above posters for this solution.

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