“Why is my Brother MFC-L3770CDW showing’No Drum’ Open top cover then install the drum unit. Magenta”
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We understand you're experiencing a no drum unit error with your Brother MFCL3770CDW machine. We'd like to help. Below is a FAQ that may help you with this issue: https://help.brother-usa.com/app/answers/detail/a_id/166278 If you continue to have issues, our Brother Customer Support Team is available to assist you direct: www.brother-usa.com/brother-support
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