The Scanner of my MFC 490CW does not work, even though the Printer does work. When I press the Scan button, I receive the message CHECK CONNECTION. This does not make sense, since the connection between my computer and the printer must be working if I can print. The list of Scanners and Cameras in the Control Panel is blank and remains so after I press the Refresh button. I have tried (i) reinstalling the appropriate driver for a Windows 7 64-bit operating system from Brothers website, (ii) switching off and on my laptop and printer, and (iii) unplugging and replugging the jacks to my router and printer, all to no avail. The Brother operating manual does not provide a description off what to do when the message CHECK CONNECTION appears. Please tell me how to fix the problem.

SOURCE: Brother mfc-490cw is offline

If you are running Vista and SNMP is turned off
1. Check to see if SNMP is turned off this is a component of Vista
a- Control Panel
b- Program and Features
c- Left side of screen you should see turn windows features on or off
d- Click on this a window box should open scroll down and see if SNMP feature is checked if it is then turn it off (unchecked) follow these steps
e- Under printers select Brother MFC-940CW printer right click
f- Select run as administrator
g- Select properties
h- Select ports
i- Select button configure ports
j- Under port settings uncheck enable SNMP
k- Click ok printer should be on line
l- To find MAC address for MAC filtering on router
m- Run the brother remote setup program and note the IP address
n- Run the command prompt as an administrator at the prompt type the following “apr –a” without the quotes and then hit return and note the physical address (MAC) for the above IP address you noted. Log on to your router and enter the MAC address from the step above and save.
o- Run the brother remote setup program again and change TCP/IP from “auto to static” please note you must have box checked at the top of the window edit network settings.
p- Restart the computer

SOURCE: Brother MFC-490CW Won't Print

If you have installed something since yesterday you might want to use system restore. the program might be causing the flaw. If not dont worry. You will need to uninstall the printer from your printer page and reinstall it. depending if it is a networked printer or a usb connected. If networked all you have to do is follow the install wizard. but if it is a usb you will have to go to the company's website and download a printer driver. after that it should work. dont forget to restart your computer. sometimes that can help too.

SOURCE: NO CONNECTION (LAN) on Brother MFC-440CN

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!!!

SOURCE: MFC-440CN: Prints but does not scan

Go to system/computer control panel, select "scanners and cameras". you should see your brother system in there (if u were able to print to it but not scan). Right click on it, select properties, and select "Network Properties" Tab. Choose select "specify your machine by address" rather by "by name". Most home/home office users dont have a local domain server at home, so even though your printer was named, it cannot be located by tcp-ip using the name, but rather by ipaddress. This solves the issue.

SOURCE: my brother mfc-490cw I can't send or recieve faxes.

According to the User's Manual for the Brother MFC-490CW:

• Poor Line Connection indicates an issue with your telephone line (Page 136). If you are sharing the fax line with any splitters or computers, try connecting the MFC-490CW directly to the phone jack and send a fax. If you are still getting a Poor Line Connection error message, call the telephone company and have a repair technician check your telephone line.
  
  
• Out of Memory error message means the machine's memory is full (Page 138).
  
  Try pressing Stop/Exit and wait until all current operations finish and try again.
  
  Try clearing the data in memory. To gain extra memory space. turn off Memory Receive (See Page 48).
  
  Try printing the faxes that are in memory (See Page 49).
  
  
• System Busy error message wasn't in the manual, but I suspect it means there's a current operation in progress and the machine needs time to finish before moving on to another job. Just wait for the current job to finish, then try again.