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I'm trying to set up at used Pixma mx850 with no cd rom on a MacBook Pro. The support site says there are no drivers for my OS, El Capitan, that the driver may be included or I may not need a driver. I have a usb cable. No additional support seems to...
The unit shows error code B200, and tells me to contact the service center. Pressing buttons does no good. Opening lid to ink tank area does no good. Shutting down, unplugging, restarting does no good. It worked up until today. What does this mean?
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