ME33 can't identify the replaced ink cartridge, which may be a problem with the ink cartridge, or a problem with the contact between the ink cartridge detector and the ink cartridge chip on the machine.

LJ2400 ink cartridge light is always on, but there is no toner. Need to replace a brand-new compact, if you know that the compact has been reset, reset it. It can be used on other people's machines, because the powder number of other people's machines has not expired.