The TN-420 and TN-450 cartridges have a flag gear which tells the printer if the cartridge is new. If your cartridge doesn't already have this gear installed (as is the case with starter cartridges), you will need to install one yourself. This video will show you how.
How to Install the Flag Gear on a Brother TN-450 Cartridge
How to Install the Flag Gear on a Brother TN-450 Cartridge Tube. Duration : 1.25 Mins.
The TN-420 and TN-450 cartridges have a flag gear which tells the printer if the cartridge is new. If your cartridge doesn't already have this gear installed (as is the case with starter cartridges), you will need to install one yourself. This video will show you how.
The TN-420 and TN-450 cartridges have a flag gear which tells the printer if the cartridge is new. If your cartridge doesn't already have this gear installed (as is the case with starter cartridges), you will need to install one yourself. This video will show you how.
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