How do I Fix a Unable to Initialize error message 51 on a Brother MFC 820CW

SOURCE: Brother Mfc 420cn says machine error AF

Open the small cover that hides the scanner flat cable. It has to be reconnected to the main pcb.

SOURCE: unknown error message UNABLE TO INIT. printer just stopped working

press menu then start bk-copy then fourtimes arrow up. machine switches to maintenance mode. press start bk copy. what two digit error code does the display show off? Post here again

SOURCE: Error message 50

Confirm Success on a 440CN

1) Remove Plastic wire covers from inside printers, and release plastic stay on lower edge, tilt cover to 90 Degrees
2) make a note of where each connector goes
3) release the Ribbon and 3 Multicore cables, removing grounding screw, then remove scanner module by sliding it off the hinges at 90 degrees.
4) Remove Three Front Panel Screws, carefully leaver front panel upwards releasing front side clips.
5) Remove front panel by disconnecting ribbon and wireing on both sides.
6) Remove 6 Screws (2 on back, three at front and one middle right
7) Carefully remove speaker cable (Red Connector) and lift up plastic casing, leaving printer uncovered.
8) Re-Seat Encoder Strip into guide. (The Transparent strip)
9) Re-assemble in reverse and Hey Presto.

All Cured. Hopefully!

SOURCE: brother mfc 440cn Unable to change error 51

mfc-440cn unable to chang 51

SOURCE: brother MFC-465CN printer Error code 51 unable to print

Usually this is caused by a foreign object or debris under the printhead path, or under where the printhead "parks."

Unplug the machine. Open the cover. Check the printhead path for little bits of paper, push pins, paperclips, staples etc. Note the location of the printhead.

If the printhead is at the far left, gently slide it towards the center (do not force it). Look carefully under where the printhead was stopped for debris. Use a flashlight if necessary.

Close the cover. Plug in the unit. Try again.