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Brother FAX-2920 Plain Paper Laser - Page 7 Questions & Answers
Model MFC-9970CDW. Why does it display 'print unable 40' or 'error'?
- Turn off the power to the machine. ...
- Fully open the top cover of the machine by lifting the top cover handle (1). ...
- Remove the drum units and toner assemblies from the machine by grasping them by the center and lifting them from the machine.
- Test the drum units.
A drum unit may be responsible for the issue. In order to determine which drum(s) is causing the issue, they will be placed one by one in the BLACK position of the machine.
a. Open the top cover of the Brother machine.
b. Choose any drum/toner and place it in the BLACK position of the machine.
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