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Repair and disassembly guides for Brother printers.

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Unable to print 4F

Brother Printer all in one MFC J615W

if I try to print , it writes on fhe LCD: unable to print 4F. someone told me that the ptinting head is ruined because I used not original ink. is it true? How can i fix it?

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same as me...unable to print init.4F

for brother dcp-j315w

if I try to print , it writes on fhe LCD: unable to print 4F. someone told me that the ptinting head is ruined because I used not original ink. is it true? How can i fix it?my printer the type is DCP-J125 brother, some body please shre and you examination... tq

Cara mengatasi Printer brother yg clean unable 4F

Back to “someone told me that the ptinting head is ruined because I used not original ink“. Can others respond to this claim??

Don’t think I ever bought original Brother cartridges for the MFC-J615W (now deceased). Used many discount cartridges for over 3+ years with well over 5,000 pages printed. Bought discount cartridges for the replacement MFC-J775DW, but still using the originals despite notice (for past 3+ months and over 1000 sheets ago) that 2 cartridges are LOW.

IMO - if the discount cartridges do destroy the head, I will still have saved enough $$ to buy a new printer a couple years down the road.

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How to Clear the "Unable to Print" Message from the Brother Printer Display

Found this on youtube. If this doesn't work, try the one below.

Access the internal maintenance mode by pressing the Menu/Set button, then press * 2 8 6 4 within 2 seconds. This should put you in the maintenance mode menu. Enter 80, then scroll down with the arrow down (round) key. You'll find an entry listed as purge count. If number is over 6000, enter 2 7 8 3.

This will reset the purge count value. Then the printerwill restart, hopefully without the annoying cannot clean message.

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I fixed my MFC-J615W by merely opening it up and jiggling the head left and right a few times. It is possible that I just needed to unplug it for a few minutes for error to clear. Hoping (and expecting) that I can run a few more reams of paper thru it before replacement.

Extremely disappointed with Brother Support. Screen says refer to troubleshooting in User Manual - downloaded - nothing at all about 4F error code. 15 minute call with Brother Support, only thing they could tell me is ‘take to service shop’ - they could not tell what 4F meant. Call their recommended service shop - $79 just to diagnose but cleaning and adjustment was no extra cost. Asked what replacement of HEAD would cost “the tech will quote after diagnosis”.

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So 6 days later, everything is still operating as if brand new. Admittedly I have only printed about 60 pages, typically 1 - 2 pages per instance.

In Early/mid 2019 the dreaded "unable to print 4F" came back. Tried all suggested, shutting down, jiggling - ended up replacing printer. Luv the high capacity cartridges - going on 2 months of "Ink Low" on 2 colors and still printing fine with at least 500 sheets used.

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