Question about Brother MFC 9700 All-In-One Laser Printer

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MAchine error 72 on the brother MFC 9700. - Brother MFC 9700 All-In-One Laser Printer

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This code say that Cannot detect Beam Detect signal
u should call an engineer or if u wish to try ur self try
replace the toner and drum. verifie cables were pluged in correctly. clean sensors
good day

Posted on Jun 02, 2010

  • Paul Bell Oct 07, 2013

    Beam Detect refers to the laser unit & is not at all related to toners/drums. Either the LSU (laser unit) or Main pcb is faulty. If you machine is out of warranty it may be more cost effective to dump & replace it.

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