How To Reset Sharp Ar-6020

This resets the Non-Volatile RAM (NVRAM) back to factory default.

If the machine still says or "Developer Required" after changing the cartridge: how to reset sharp ar-6020

After approximately 60,000 copies, the AR-6020 will display , "H3" , "H4" , or "Maintenance Required" . This is a timed counter, not necessarily a hardware failure. You can reset it using the service program. This resets the Non-Volatile RAM (NVRAM) back to