Question about Brother MFC-7420 Printer
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A quick fix for most communication errors can be achieved by resetting the printer and/or rebooting the PC. Frequently, issues are caused simply by a break in the signal sent from PC to printer or vice versa. Unplugging and re-plugging the printer allows the small amount of on-board memory on the printer to be cleared, with the result that the PC recognizes the machine properly. Programs continuing to run in the background of the operating system (OS) can cause the signal to be lost. Rebooting the PC ends all programs that may be running and makes a 'clean' start, allowing the signal to be detected.
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