Epson PX-M840F Error 0x21 If you encounter the Epson PX-M840F error code 0x21 displaying on your scanner, it indicates an issue related to the Scanner/ADF ALD PID excess speed error. This error can be caused by several factors, including ALD motor failure, motor driver failure, cable disconnection, or FFC disconnection. When the ALD motor fails,…
Epson PX-M840F Error Code 0x21 Part 79404
