"unable to print 51" message error on Brother MFC 845CW


- Machine off
- Switch on the machine while holding down the "Menu" button,  until all the leds are flashing on/off: it's the "maintenance" mode.
- Press 80
- Press the "Mono start" button several times until you see "purge: xxxx"
- Press "2783" in order to reset the purge counter. You will see: "purge:0000"
- Press the "Stop" button.
- Press "99" to exit the maintenance mode.


Carol Saynisch said...

I followed the instructions and reset purge to 0000...and exited according to your directions. I still get the unable to print error 51 message. Now what?

Jann Lassalle said...


Try these solutions:

Val said...

I followed the instructions but it still shows the error 51 what can I do???

Jann Lassalle said...

Hi Val,

Open the scanner and remove any foreign object inside the printer.