The ML-2160/2165 series utilizes a CRUM (Customer Replaceable Unit Monitor) chip. This IC stores cartridge region codes, toner capacity, and page count. The printer firmware reads this data to determine if a cartridge is valid. Once the counter reaches zero, the printer halts operation.
on 'W' models) button for ~10 seconds until the LED flashes green, then release. Supplies Information: firmware reset samsung ml 2160 2165 2160w 2165w