How To Reset - Sharp Ar-6020 link

Because "reset" can mean different things depending on the problem you are facing, this guide covers the three most common types of resets: a hard reboot (for glitches), a factory reset (for settings), and a maintenance reset (for service codes).

Still Having Issues?

If the error returns within 24 hours:

Replace the drum unit (life is ~20,000 pages).
Check the toner cartridge – is it genuine Sharp?
Clean the corona wire (small green lever under the drum unit – slide back and forth 5 times).

Need a service manual? Sharp does not publicly release full service codes, but Simulation Modes 42, 44, and 14 cover 90% of AR-6020 reset needs.

Disclaimer: Resetting the maintenance counter without replacing parts will void any remaining warranty and leads to poor print quality. Perform at your own risk.

Have a different error code? Drop a comment below with the exact letters/numbers on your display.

Final Checklist: Your AR-6020 Reset Cheat Sheet

Print this table and keep it near your machine:

3. Service Mode Reset (Simulation Mode)

Best for: Clearing persistent error codes (like "H4", "F2"), resetting the developer counter, or resetting the drum counter.

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:

Press the P key (program key) or the CA key (Clear All) to ensure the machine is at the home screen.
Press the following keys in rapid succession:
- CA (Clear All) → Interrupt → 0 → 0
- Alternatively, try: CA → P → * (Asterisk) → C (Clear)
- Another common variation for this series: Press System Settings → Stop/Clear → 0 → Start.
If successful, the screen will display "SIM" or a number pad.

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

Sim 14: Clears most "H" codes (like H4, which indicates a fuser error). Enter 14, press Start, select "1" to execute.
Sim 21: Resets the memory/initialization.
Sim 24: Resets the copy counter.

3. Reset "H" or "U" Error Codes (Maintenance Codes)

If you see H2, H3, H4 (fuser/heater errors), or U2 (EEPROM error), do not run a normal reset. You must clear the specific trouble code:

To clear H2-H4 (Fuser errors):

Enter Simulation mode: # → * → C → * → P
Key in 14 → Press Start.
Set the code to 01 → Press Start again.
Power off/on.

To clear U2-30 / U2-40 (EEPROM checksum error):

Enter Simulation mode.
Key in 16 → Press Start until you see "U2" related option.
Press Start to execute clear.
Turn off/on.

Part 2: Resetting the Maintenance Indicator (Yellow Light / H2, H4, H5)

The most common reason users search for a reset is the maintenance indicator light. On the Sharp AR-6020, this is usually a yellow light or an "H" code (H2, H3, H4, H5, H6, Hx). This appears every 20,000 to 40,000 copies to remind you to change the drum, blade, or developer.

Do not reset this without changing the parts. Resetting the counter without replacing the drum/developer will lead to poor print quality (gray background, black spots, or faint text).

Part 3: Fixing and Resetting Paper Jams (J Code)

A common frustration is a paper jam that persists even after you have removed the paper. The Sharp AR-6020 has several jam codes (J0, J1, J2, J3, J4).

Before resetting, clear all paper:

Open the side cover (right side). Pull out the green levers and remove any crumpled paper.
Open the front cover and pull out the drum/developer unit. Check for paper wrapped around the black drum roller.
Open the paper tray (Tray 1 or 2). Remove the stack, fan the paper, and load it again.
Check the bypass tray (multi-purpose feeder) for folded paper.

To reset the jam indicator:

The Sharp AR-6020 automatically resets jam codes once you close all covers and lift the document feeder (RADF) if you have one.
If the jam light stays on, open and close the side cover firmly 3 times. This re-seats the paper detection actuators.
If still flashing, perform a soft reset (Power OFF/ON – see Part 1).

Note: The Sharp AR-6020 does not have a manual "jam reset button." It relies on sensors. If jams persist after reset, you likely have a broken sensor flag or a worn-out paper feed roller.

2. Hard Reset / Factory Reset (Erases All User Settings)

This resets the machine to factory default: language, tray settings, auto clear time, toner save mode, etc.

Steps:

Enter Simulation mode: # → * → C → * → P
Key in 56 → Press Start
Use the arrow keys until you see 1 (or ALL CLEAR).
Press Start (or OK).
The machine will reboot automatically.

3. Maintenance / Timer Reset (Clearing "H" or "Maintenance Required")

After approximately 60,000 copies, the AR-6020 will display "H2", "H3", "H4", or "Maintenance Required". This is a timed counter, not necessarily a hardware failure. You can reset it using the service program.

Step-by-step maintenance reset:

Turn off the machine using the main power switch.
Hold down both the Start (green) button and the Clear button simultaneously.
While holding them, turn the main power switch ON.
Wait until the display shows "P" (Program mode).
Release both buttons.
Using the numeric keypad, enter "64".
Press the Start button. The display will show a number (e.g., 60).
Use the numeric keys to enter "0".
Press Start again. The display should blink or change to confirm.
Turn the machine OFF, then back ON normally.

The "Maintenance Required" message should now be cleared. Because "reset" can mean different things depending on

How To Reset - Sharp Ar-6020 __link__