Phenomena need to reset toner cartridge counter for Brother HL-2250DN printer: - Toner LED on control panel of Brother HL-2250DN printer is red light on or orange light on. - Printer does not print and offer the massage shown on status window of computer : toner cartridge end of life , or install the toner cartridge , toner life end ... Cause of need to reset toner cartridge (reset counter) Brother HL-2250DN printer: - To manager toner powder remaining in toner cartridge of Brother HL-2250DN printer was expired or not, calculating coverage printed onto plain A4 paper on the OPC drum of oprinter (for most cartridge this mean 5%). This printer use to gears system to manager. - Brother HL-2250DN printer manager the toner powder remaining in the cartridge through calculating the rotation number of gears system. The toner cartridge compatible with Brother HL-2250DN is TN450 and Yields up to 2,600 pages. This means: the rotation number of gears system limited is 2,600. - When the rotation number of gears system has limit reached, the Brother HL-2250DN does not print, although toner powder still pretty much in the toner cartridge How to reset toner cartridge(reset counter) for Brother HL-2250DN printer - Pay for new genuine TN450 toner cartridge. The cost of new genuine toner cartridge is 62 USD and new compatible are: 22 – 26 USD, expensive to use. To reset counter for Brother HL-2250DN, you need to have the KIT reset toner cartridge for Brother HL-2250DN. The KIT include: one gears, one springs, and a plastic lid. However, on the original toner cartridge packed with printer have not KIT reset. You need to pay new genuine toner cartridge or just pay KIT reset couter (very cheap) Introduction reset toner cartridge(reset counter) for Brother HL-2250DN printer Step 1 : Remove the protective cap , which contains gears system of toner cartridges . Insert the springs like this one: Step 2 : Rotation the semicircle gears as same as the following image: Step 3 : Reassembly all gears as this one: Step 4: Reassembly plastic lid as same as in the picture: Step 5 : Insert the toner cartridge into the printer , the printer will automatically rotating gears system , making reset toner cartridge (reset counter) of the printer. Wish you success!