If your machine is displaying an error code such as , H3 , or H4 , it often indicates a fuser-related issue that requires a manual clear through the service mode. According to various technical guides , follow these steps to reset:
: Once the display allows input, enter the number 14 using the keypad [5.21]. how to reset sharp ar-6020
Once a technician has replaced consumables like the drum or developer, the maintenance indicators (like the "sun" icon ☼) must be reset: Enter Simulation Mode . Type 20 and press START . Type 01 and press START to execute the reset. Developer Counter Reset: Enter Simulation Mode . Type 24 and press START . Type 06 and press START to reset the developer counter. 4. Resetting the Admin Password H2 If your machine is displaying an error