Question about Brother Multi-Function Center MFC-665CW All-In-One InkJet Printer

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Brother mfc 665cw connection error

My laptop & printer all indicate they are on the same network, yet the laptop tells me it is offline. No option to go online. The printer says "connection error" when I go to easy WLAN set up. WHen I look for its network, there it is. I've enable all the sharing, installed the printer drivers, (I have Vista). The printer works fine wired. Just wirelessly, I'm missing something. Any thoughts? I keep searching online. My desktop laptop ping each other fine. The 2 computers show up in the lap top, the printer does, too, as part of the desktop, One simple click seems to be missing! HELP!

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  • 3 more comments 
  • Widgit Apr 02, 2008

    Connection error from iBook G4 to Brother MFC-665CW. All other systems are 'go'. Installed 2nd printer yesterday. If this caused "connection error" on 1st printer (MFC), how do I fix it? I need both printers to be able to print from this one computer. I Know someone out there has my answer! Is it you??

  • PatCurley Apr 17, 2008

    Same problem, it appears that my computer and printer is networked. My wife's computer has no problem printing. But my status monitor states I am offline.

  • seagle Jul 13, 2008

    Since I bought this printer I always get the same problem. It goes offline. I've updated the firmware but it still goes offline. The only way I can find to get it to go online again is to turn it off then on again. There must be a better way

  • SMSturbo Sep 28, 2008

    I have two Dell Laptops and both were working fine with the 665cw. Now one computer shows the status monitor with the printer being offline. At the same time, my other laptop prints and scans fine.

  • ladyvxn Nov 03, 2008

    I downloaded the ink tracking widget for the mfc 665cw from the Brother web site, and every time I call up the widget, it says "connection error". How do I fix this? 

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I have a MFC665CW connected wirelessly to a router and a pc connected by ethernet to the router, with a broadband satellite receiver connected to the WAN port of the router (plan to add another PC to the network soon, so have set up the network in advance). I had trouble with the brother status montior flashing 'Ready' then 'Offline' all the time, when I knew the printer was always connected to the network. I had set up the DHCP stuff on the router to allocate IP addresses to everything that connects to the network, like you are supposed to. I updated drivers and firmware, but the problem continued.
When I checked the router status log I saw that one MAC address in the network was making a DHCP request every 5 minutes (i.e. it was asking the router to allocate it an IP address at regular intervals). Every time the router answered that request it made the Brother status monitor go 'offline'. The MAC address was my broadband modem. I fixed the issue by setting the router to allocate a static IP address to the MAC id for my broadband modem (in the DHCP setup section in the router's admin interface). That stopped the dynamic IP address requests from the broadband modem and the Brother status monitor works fine now. I also set static IP adresses for the printer and PC to be on the safe side, although I don't think that matters.
So, check your network log and look for a MAC id that makes regular DHCP requests and then set a static IP address for it. Hope this helps you guys too.

Posted on Oct 09, 2008

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  • tepl Oct 15, 2008

    The solution I posted, about setting static IP addresses in the DHCP section of your router admin turns out not to be the whole issue, although I think it helps to have static IP addresses.

    I have been troubleshooting this for about a week now, with the help of Brother Tech Support, and I have finally fixed the problem for me. The issue in my case was that I had the MFC665CW connected by USB cable to my PC before I set up a network. Then I bought the router, uninstalled the Brother software, and re-installed it, selecting 'Wireless' connection instead of USB. What I didn't know is that the USB driver actually stays on the computer and is not uninstalled when you un-install the software. To get rid of it I had to go to Printers & Faxes, right-click on the folder background, select Server Properties off the pop-up menu, go to the Drivers tab in the dialog that appears, then select and Remove all the drivers for the MFC665CW that I did NOT need anymore (the Brother USB one in my case).

    So, for each computer you are using: If you uninstall the Brother software, then get rid of all the old drivers are still there (by going to Printer & Faxes and doing the right-click stuff I described above) and then install the MFL software for the MFC665CW connection-type you are using for that computer, everything should be OK.

  • tepl Oct 19, 2008

    My (hopefully) last comment on this issue (for me at least, it has been a quite a mission to get this sorted out) is this:

    The point I mentioned on Oct 9th about a mac address making regular DHCP requests has now been clarified... I actually disabled the DHCP server on my router and manually assigned static IP addresses to my MFC and PC during troubleshooting and the same node continued to make DHCP requests like before. The node turned out to be the WAN port of the router, and I think the activity was because the DNS caching feature on my router was enabled (i.e. the router was periodically going to my ISP's DNS server to get data to cache for me).

    The other thing I noted was that CMD ping was sometimes getting a reply from the MFC's IP address, and sometimes not - so the problem was a networking problem, not a brother software one.

    When I disabled the DNS caching feature on my router, the network became stable and I'm finally OK.

    I thought I'd fixed everything earlier, but after MFC & PC were shut down overnight, I'd find the problem was back again next morning (because the router was DNS caching all night!).

    Finally, the problem with Brother uninstall not clearing all drivers as been addressed - they have a uninstall util you can download from the solutions centre (see link in Mix-It-Up's post of Mar 30, 2008).

    Over-and (hopefully) -Out!! :-)

  • tepl Oct 21, 2008

    The MFC665CW seems happier with the following wireless comms settings:

    TX Rate 18; CTS Mode NONE; No Super G or turbo; and maybe channel 1 or 11. I'm using a Dlink-624 router (revD) and these settings work for me.

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Just an idea:

http://welcome.solutions.brother.com/bsc/public/us/us/en/faq/faq_top.htm?reg=us&c=us&lang=en&prod=mfc665cw_us_as

Posted on Mar 30, 2008

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Printer is offline


Do you mean get the printer powered ON? Simply press stand-by-fax to get it back ON.

Or do you mean the wireless connection?
plz take a look around here:
http://welcome.solutions.brother.com/bsc/public/us/ca/en/faq/faq_top.htm?reg=us&c=ca&lang=en&prod=mfc665cw_us_as

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