A.a. take the cartridge out from the printer, check the cartridge chip and the contact point in printer, use a dry cloth or paper tissue to clean the chip and the contact point if necessary and then reinstall.
b.If the cartridge is without chip, please check whether the technical gear is installed properly, and reset it by following the instruction on our website
c. For some brand for example Samsung/Lexmark, the original manufacturer frequently update the hardware, old chip can’t work on updated version, pls contact with your sales manager for a new updated chip.
d. Please check the compatibility list if the cartridge can be used for this printer. Sometimes XXX capacity cartridge can’t work on printers which use lower capacity.
e OEM has more and more complicated chip technology, to avoid the aftermarket competition, for some Lexmark and HP new models, the aftermarket chip has many serial numbers. If you use same serial number chip on same printer, the printer will report error code. You need to replace with a new chip or another cartridge.