How To Reset Sharp Ar-6020 «HIGH-QUALITY»

Use this when the spanner/wrench light is solid or blinking.

To reset the developer counter (if you changed the developer):

A common reason people search for "how to reset sharp ar-6020" is the dreaded "H3" or "H4" error. This means the fuser unit failed to reach temperature. Never ignore H errors – they are fire safety locks.

How to clear H3/H4 on Sharp AR-6020:

  • Use the arrow keys to navigate to Simulation 14.
  • This clears the fuser error latch. The machine will attempt to reheat.
  • Exit Service Mode by turning the machine off and on.

    • Warning: If H3/H4 returns immediately, your fuser lamp or thermostat is broken. Do not keep resetting it – call a technician. how to reset sharp ar-6020

    Resetting the Sharp AR-6020 without addressing the root cause will damage your machine. Here is a maintenance schedule to follow before hitting reset:

    | After Reset Code | You Must Replace | Part Number (Example) | | :--- | :--- | :--- | | SIM 24 (Drum) | Drum cartridge, Blade, Grid, Main charger | Sharp AR-201DR | | SIM 42 (Developer) | Developer powder (Magnet roller base) | Sharp AR-201DV | | SIM 14 (H2-H6) | Thermistor, Heat roller, Fuser lamp | Sharp AR-201FT |

    The Golden Rule: If you reset a maintenance counter without changing the part, the machine will continue to run but will produce bad copies. You will eventually ruin the developer unit, requiring a $200+ repair.

    Best for: Clearing persistent error codes (like "H4", "F2"), resetting the developer counter, or resetting the drum counter. Use this when the spanner/wrench light is solid or blinking

    This is a more advanced reset used by technicians. Proceed with caution; changing settings in Simulation Mode can cause hardware issues if done incorrectly.

    How to Enter Simulation Mode:

  • If successful, the screen will display "SIM" or a number pad.

    • Common Reset Codes: Once in Simulation Mode, type the code and press Start:

    | Problem | Likely Cause | Solution | |--------|--------------|----------| | Toner reset fails | Chip on toner cartridge is defective | Replace with genuine Sharp cartridge | | Maintenance code returns | Counter was not set to zero | Repeat step 3, ensure you entered "0" after code 64 | | Buttons unresponsive | Control panel locked | Unplug machine for 5 minutes to discharge capacitors | | Factory reset doesn’t clear error | Physical issue (fuser, laser, paper feed) | Call service – reset won’t fix hardware | To reset the developer counter (if you changed

    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.

    Steps:

    This is a hardware reset. It will not clear error counters, but it will reboot the CPU and clear temporary memory glitches.

    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: