Brother TN-450, reset Toner

There are two procedures for resetting the TN-420 & TN-450, depending on whether you have a print-only device (HL series) or multifunction device (MFC series).

Choose for which type of printer you want to perform the drum reset..

| Brother DCP & MFC | Brother HL | 
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Multi-function Device (DCP/MFC series):

If you have a Brother multi-function (DCP/MFC series) machine and recently replaced your TN-420 & TN-450 toner cartridge, you can manually reset the toner remaining

1. Open the front cover.
2. Press the ‘back’ button.
3. Press *00. (Ignore drum message).
4. It should say accepted on the display screen.
5. Close the door.

Print-only Device (HL series):

If you have a Brother multi-function (HL series) machine and recently replaced your TN-420 & TN-450 toner cartridge, you can manually reset the toner remaining.

1. Open the Front cover.
2. Turn off printer
3. Press and hold the GO button.
4. Power ON the printer while continuing to hold the GO button.
5. Once the 3 LED’s are lit, release the GO button.
6. Press the GO button 2 times. This will cause the LED’s to light solid.
7. With the LED’s lit solid, press the GO button 5 times.
8. Toner will be reset.
9. Close the front cover.

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 Source of information: Service support, Brother & SCC & Uninet & Summit