Sharp MX4140 Printer with list Error Codes and Epson ET-16500 Adjustment Program – Printer model: Sharp MX4140 – Error codes on Sharp MX4140 with details instruction fixing: Code: A0-01 Description: PCU PWB ROM error Causes: The firmware version-up is not completed properly by interruption of the power during the version-up operation, etc. PCU PWB trouble. […]