# Brother MFC-L3750CDW Toner Reset Brother printers, both inkjet and laser, have a problem with fresh cartridges not being detected when fitted. We're going to look at how to reset a toner cartridge in a [Brother MFC-L3750CDW](https://www.inkjetwholesale.com.au/printer/brother/mfc-l3750cdw/14838/) laser printer today. When replacing a cartridge, make sure your printer is turned on, and only replace them when you are instructed to do so. This usually decreases the need to manually reset the cartridge, but it's not guaranteed, and if it does, the manual reset technique is quite simple to follow. Only if the chip is obsolete or damaged, or if the toner hasn't been physically reset when created, can a Brother toner fail to reset even when done manually. So let's have a look at how to reset these toner cartridges. The TN-253BK and the three colors (TN-257C, TN-257M, and TN-257Y) are the real cartridges for this model. Before trying the reset, double-check that the toners are the correct ones. ![](https://i.imgur.com/cSQBxCz.png) # Brother MFC-L3750CDW reset procedure 1. Open the printer's front cover as if you were replacing the cartridges. 2. With the cover open, hit the Back and Cancel (X) buttons at the same time. Then simply press the Back button. It may take a few tries for the reset menu to show onscreen. 3. Select the cartridge colour you want to reset from the menu and press "yes" to reset when requested. 4. When the reset is finished, the LCD will indicate "Accepted."