Question about Lexmark X4270 All-In-One InkJet Printer
I have an HP 750 printer that takes No. 15 black cartridge. After installing, it says error-incorrect black cartridge installed an unsupported cartridge
Make sur u r not using refilled carts...
Cleaning the copper contacts on the carts as well as the copper contacts inside the cartridge carrier..
And install the carts thru the HP software..this might fix..or the carts are defective
Posted on Jun 19, 2008
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Posted on Jan 02, 2017
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