If you can not make anything better, go to Samsung website and download reflash tool (ML1640_V1010083.exe) to reflash it back to very first firmware version. If red light still is on, you can turn of your printer and start to reflash from begin. Don’t turn off printer when reflashing. Read carefully to find out what’s your firmware version. Your printer will printe out self test page. Press and hold down until data light on. Turn on your printer (red light still on). Everything you need have just do step by step as Readme.txt and wait for self reflashing routing active. This tool has two batch files have been named step1.bat and step2.bat to make all thing become easy. After a long time I have resetted alot of Samsung ML-1640, I wanna give to all this tool. There many of articles about how to reset Samsung ML-1640, but I think almost of its are all fail because Samsung has changed Counter Chips and Firmware (from. If you are an technican, it will be very easy (how to do, I will post up later). So what’s happen? Samsung (maybe me if I made it ) don’t like customers refill tone cartridge so they placed a counter chip on mainboard. It’s very easy to refill but it will make you mad sometimes when red light is on. The Resetter supports a work with the chips from the menu list Chip Model only. Samsung ML-1640, a compact and cheep price and suitable for home and small office, has a starter Toner Cartridge can print maximum about 700 pages.

This way is applied to refill toner cartridge. This will stop the flashing red LED and the system tray will say the cartridge is full. The electrical contacts are not in the cartridge but inside the printer: There is a plastic fuse holder on the cartridge, even the starter cartridge. You should purchase a reset fuse with 250mAh and 3/4″ inch long (20 mm) round glass with metal ends like this. And this is the way Samsung tell user must replace toner with new.

Samsung ML-2510, when you insert a new toner printer sends a pulse on the fuse and it blows, and samsung detects new toner has been installed with starter toner cartridge.

Samsung 1640 reset program