![]() ![]() If the two metal connectors seem squashed back, gently (so not to break anything), pull them forwards. Now visualise where these would connect inside the printer and look for the corresponding connectors inside the printer (making sure the printer is switched off and unplugged). Remove your toner cartridge and have a look for something that resembles a microchip or two metal squares. If the contacts aren’t touching, your printer will think that the toner isn’t installed. The metal contacts in the printer and the ones on the toner complete a circuit. So a printer can detect a toner cartridge that has been installed, 2 tiny metal contacts must connect to the corresponding contacts on the cartridge.
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