To reset your Canon PIXMA G3400, you likely need to clear the 5B00 error, which indicates that the ink absorber (or "diaper") is full. Manual Reset Procedure (Service Mode)
This process clears the internal counter without needing external software. Enter Service Mode: Ensure the printer is off but connected to power. Press and hold the Stop button (red triangle). While holding Stop, press and hold the Power button. Release the Stop button but keep holding Power.
Press the Stop button exactly 5 times. The alarm lamp should flash with each press.
Release the Power button. The green light will flash and then stay steady, indicating you are in Service Mode. Reset the Counter:
Once the green light is steady, press the Stop button 5 times again.
Press the Power button once to confirm the reset. The printer will process and may print a page with "D=000.0" (indicating the counter is now zero).
Press the Power button again to turn the printer off. When you turn it back on, the error should be gone. Alternative Reset Scenarios
Resetting a Canon PIXMA G3400 is the go-to fix when your printer stops mid-job with a "Support Code 5B00" or flashing orange lights. This error usually means the waste ink absorber is full, but often, it’s just a software counter that needs a quick refresh. The Quick Fix: Factory Reset
Use this if your printer is acting glitchy, having Wi-Fi issues, or showing non-critical errors. Turn on the printer. Press and hold the Stop button. Wait for the Alarm lamp to flash 21 times. Release the button. The settings are now restored to factory defaults. The Deep Fix: Service Mode Reset
If you are seeing the 5B00 error (Ink Absorber Full), a standard reset won't work. You need to enter Service Mode. Step 1: Enter Service Mode Turn off the printer (keep it plugged in). Press and hold the Stop button. While holding Stop, press and hold the Power button. Keep holding Power, but release the Stop button. While still holding Power, press the Stop button 5 times.
Release all buttons. The power light should blink and then stay green. Step 2: Clear the Counter
Once the green light is steady, you are in Service Mode. To clear the "Ink Full" error: Press the Stop button 5 times. Press the Power button once to confirm.
The printer will print a page (or a few lines) indicating the counter is at 0%. Turn off the printer to save the changes. ⚠️ Important Note on Ink Absorbers
The "Ink Absorber Full" message isn't just a software trick; there are physical pads inside the printer that soak up waste ink. Resetting the software lets you keep printing immediately.
Ignoring the pads can eventually lead to ink leaking out of the bottom of your printer.
If you reset the counter multiple times, consider opening the printer to clean or replace the physical sponges.
💡 Pro Tip: Always make sure your ink tanks are at least half-full before performing deep resets or cleaning cycles to avoid air bubbles in the tubes. If you'd like, I can:
Help you find a download link for the Service Tool software (v4720 or newer) Explain how to manually clean the waste ink pads
Troubleshoot clogged print heads or white lines in your prints
4. Factory Reset (Network & Settings)
Clears Wi-Fi, admin password, and all user settings — does not clear waste ink counter.
Step 1: Entering Service Mode
- Ensure the printer is powered off but plugged into the mains.
- Press and hold the Stop/Reset button.
- While holding Stop/Reset, press and hold the Power button. (Hold both buttons simultaneously).
- Release the Stop/Reset button while keeping the Power button held down.
- Press the Stop/Reset button 5 times. (You must do this rhythmically while holding Power).
- Release the Power button.
- The printer will enter Service Mode. The power light will usually flash or turn solid green, and the LCD (if applicable) may display "Idle."
Types of reset
- Soft reset — power-cycle to clear temporary errors
- Network reset — clears Wi‑Fi settings (if applicable)
- Factory (service) reset — restores defaults and clears custom settings