Question about Brother MFC 420CN All-In-One InkJet Printer
Printer was working just fine now will not print anything in black ink. All cartridges are full. I had the Brother 'clean' the ink, still will only print the if there is color on the page I want printed.
Make sure that the carts are FULL, placed well and are secured!
press menu then start bk copy then fourtimes arrow-up-button.
machine will be in maintenance mode. press 7 then 6 then 4 then start bk copy. machine will initialize the carts and refresh ink in tubes and the ph. leave the maintenance mode when finished by pressing 9 then 9.
Run a quality test print.
If you still cant see any bk this might be because of generic ink which had clogged the bk channel. this cant be fixed anymore!
Posted on Jan 03, 2008
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