How To Reset Sharp Ar-6020 -
The Sharp AR-6020 uses a developer unit (developer mix) that should last ~60,000 pages. Some online guides incorrectly advise resetting the developer counter when changing toner. Do not do this. Resetting the developer counter (Simulation 42) without replacing the developer powder will lead to light copies, backgrounding, and streaks.
If you have actually replaced the developer unit, you reset it via:
If your Sharp AR-6020 displays a code, use this cheat sheet:
| Error Code | Meaning | Reset Method | | :--- | :--- | :--- | | U2 | EEPROM error | SIM 16 (Clear EEPROM) | | F1 | Toner motor error | SIM 14 (Cancel) + replace toner cartridge | | F2 | Toner density sensor error | SIM 25-02 (Manual adjustment) | | F5 | Communication error (scanner) | SIM 14 + reseat flat cables | | L1 | Mirror motor lock | SIM 14 + lubricate scanner rail | | L3 | Main motor lock | SIM 14 + check drum rotation | | CH | Please add toner / Door open | Replace toner or close front cover properly | | EE | EEPROM write error | SIM 16 (Reset NVRAM) | how to reset sharp ar-6020
How to execute SIM 16 (EEPROM Reset):
This resets the machine to factory default: language, tray settings, auto clear time, toner save mode, etc.
Steps:
| Problem | Reset Method | Speed | | :--- | :--- | :--- | | Frozen screen, ignoring buttons | Power cycle (unplug) | Fast | | Red "Drum" light after new drum | Drum counter reset (Method 2) | 30 sec | | Red "Toner" light with new toner | Toner gear check + code | 1 min | | H3 / H4 error (fuser) | Simulation 14 | 1 min | | Corrupted settings / Selling device | Factory reset (Simulation 67) | 2 min | | False paper jam | Jam clear (Simulation 8) | 30 sec |
Before diving into complex button sequences, try the most basic reset. This solves 90% of "freezing" or "unresponsive" issues.
When to use: The screen is frozen, buttons don't respond, or the machine is stuck on a processing loop. The Sharp AR-6020 uses a developer unit (developer
Steps:
This is a hardware reset. It will not clear error counters, but it will reboot the CPU and clear temporary memory glitches.
Important: After SIM 24, you must perform a Toner Density Adjustment (SIM 25-01) or the machine will over-toner or under-toner. To do this: If your Sharp AR-6020 displays a code, use