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When printer is set up to print, it makes a brief knocking sound and on little screen at top it says...unlock scanner

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If the printer LCD screen continues to display the same error message, do the following:
Remove both cartridges from the printer.
Move the red lock switch (at the back of the printer) from the down position to the up position, and then move it back to the down position.
Unplug the printer and turn it onto its left side.
Then return the printer to the upright position and reapply the power supply.
Attempt this fix twice and then try to print and scan once more.
note : Installing the wrong upgrade file will not cause damage to the printer, but the LCD display will display some characters incorrectly. Downloading and installing the correct firmware will resolve this issue

Posted on Jul 05, 2008

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