Question about Samsung SCX 4521F All-In-One Laser Printer

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Put in second toner and machine is still saying toner empty

I have replaced the toner twice, yet still it is saying toner empty?

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If you are using refilled cartridges those errors are common, Samsung has an eeprom on the cartridge keeping track of usage and you need a new chip from the refillers. If you are using OEM cartridges you need to clean the contacts inside the machine that the cartridge connects to and wipe the contacts on the cartridge before installing, Otherwise a shop repair for the CRUM circuits.

Posted on Sep 11, 2009

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It says there is no cartridge, or does it say that the cartridge is empty?

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If not, then one of the contacts must have been damaged. Remove the cartridge and look inside the machine. See if you can find any of the metal contacts on the side of the inner chamber that is bent or damaged and try to bend it back.

Check the drum and make sure none of the contacts are damaged.

If the unit is still saying Toner Empty, try this. On the left side of the toner there will be a while lever in a semi-circular notch.

Unplug the unit, use a small screwdriver or a key to push that white lever back to the front of the notch. Put the drum and toner back into the machine and plug the power back in.

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