Machine Error 46 indicates that the ink absorber pad is full and needs replacing. You will need an engineer to replace this.
If your machine is out of warranty, please contact Brother Customer Service:
7777 North Brother Blvd.
Bartlett, Tennessee 38133
1-877-BROTHER (877-276-8437)
901-379-1215 (fax)
M-F, 9:00am to 8:00pm Eastern Time