Question about Brother MFC-8840D All-In-One Laser Printer

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BROTHER MFC-8840D "Check Scan Lock" error message

I purchased my Brother printer new over 4 years and it's been great. Unfortunately, It recently displayed "Check Scan Lock" message on LCD and the printer will NOT print or scan anything. The scan lock button has never been used until I tried that simple troubleshooting tip and it did not resolve the problem. Is there a solution for a home user besides taking it in to Brother repair shop?

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  • Walter Jorgensen Mar 12, 2009

    "Check Scan Lock" appears in the display window but the scan lock is in the OFF position, i.e., w/o the red showing. In fact, the scan lock lever won't slide all the way ON! Of course, the machine will not do either ADF or flatbed scanning. ??????????????????????

    It will, fortunately, still print from the computer.

    Walt Jorgensen
    waltjorgensen@comcast.net

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I had the same problem. It means the scanner lamp is in the park position and is stuck. You need to lean the printer away from the sheet feed side and bump it on the side. This may fix it. If it doesn't turn off the power and remove the two screws that hold the scanner lid on. Then remover the other 6 screws located under the lid on the left side while the lid is hanging from lid open sensor cable be carefull not to drop the lid, break the cable or the glass bed. After removing the base screws you can set the lid on the scanner again while you lift the scanner bed exposing the scan lamp mechanism. Push it a few inches in the machine and close the lid. You can do a test by powering the unit on and hold the lid open sensor button located on the bottom left of the lid. The system should initialize and bring the scan lamp back to the proper position. Turn off replace all screws and your done. If it doesn't work the first time push the scanner lamp farther into the scanning area and repeat. Good Luck

Posted on Nov 28, 2008

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