Question about Brother MFC-5840CN All-In-One InkJet Printer
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Posted on Jan 02, 2017
SOURCE: Brother MFC5840 CN Print heads
I guess you have used generic ink carts.
You should buy an original brother ink cart.
When done so make sure all other carts are at full level:
Press menu then start b/k copy then fourtimes arrow up (tel.index). Machine will be in maintenance mode. press 7 then 6 then 4 then start b/k copy. Machine will refresh ink within tubes and print head and do some power cleaning. when finished press 7 then 6 then 3 then start bk copy to run an extra power purge.
Leave maintenance by pressing 9 then 9.
Do run a quality test print.
If you re lucky the ph will work again.
THERE IS NO WAY TO CLEAN THE PH OUTSIDE EXCEPT BY Power Purge (7-6-3) within maintnenace mode.
If you like to save money refill ORIGINAL Carts by drilling a 2mm hole into the top (O of brother brandname) . You can leave the hole open to refill the cart next time directly without taking it out of the printer.
Mix some 3ml 85%-glycerin alc (drugstore) with 3ml of destilled water and 5 ml of DYE(!) ink and refill the c/y/m cart.
For bk mix 1 ml glycerin alc with 4ml dest. water and 15 ml bk DYE ink (shake well before refill).
This is -nearly- the exacte mixture of original brother ink.
Posted on Mar 02, 2008
If you don't print at least once a month, you will clog the machine. You unfortunately have to get it fixed by a professional or get a new printer. Sorry!
Posted on Jun 14, 2008
I had the same problem so i took out all of my cartridges and squeezed them i noticed ha t the ones that worked had ink dripping from a small hole at the bottom and the ones that didnt were blocked so i took a sharp kitchen knife and puntured them... all BETTER! I hope this helps>>>>
Posted on May 26, 2009
Open up amd release blue stay at bottom by pressing edges inward and pulling slightly forward. Remove the 4 screws, 2 small plastic covers and the earth screw. Pull out the ribbon connector near the USB plug. Unplug the 2 white and one red connectors, noting how the cables fit in. Fully open the lid and pop the scanner part off. Remove all the ink cartridges. Now using a flat screwdriver unclip the top of the base all the way round and lift off. The print head is now accessible. Rotate the white paper feed cogs to release the print head. Slide it all the way to the right and remove it by tilting the back edge upwards. You mow have access to the print head!!!!
Posted on Jun 02, 2009
Hi I need help because I have an exam tomorrow and my printer is playing up. I have a Brother MFC 235C. I had a paper jam that I cleared but after the printer reads "printer unable 50" refer to instructions or routine maintenance.
Looking online Magenta printhead often seems to be the problem. I notice that my magena cartridge has split open and is leaking. are they connected? Any thoughts on how I repair it
Posted on Dec 11, 2009
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