Sharp MX3550N Printer with list Error Codes and Epson XP-610 Adjustment Program – Printer model: Sharp MX3550N – Error codes on Sharp MX3550N 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. […]