December 14, 2025

Canon Service Tool 4905 Fixed 【2026】

Report: Canon Service Tool v4905

Date: October 26, 2023 Subject: Technical Overview and Usage of Canon Service Tool v4905

Error 3: Printer Still Shows Error 5B00 After Reset

  • Cause: The physical waste ink pad may be truly saturated, triggering a hardware short.
  • Fix: You cannot reset your way out of a physical overflow. You must open the printer, remove the pad, wash it, dry it, or replace it with a diaper pad or paper towel layer. After physical cleaning, run the service tool reset again.

Part 10: Conclusion – Should You Use Canon Service Tool 4905?

Yes, if:

  • You are technically comfortable with entering service modes.
  • Your printer is out of warranty.
  • You understand that a reset is a temporary measure and are willing to eventually replace the absorbent pad.
  • You have a virus scanner ready.

No, if:

  • Your printer is still under warranty (Canon will fix it for free).
  • The ink pads have already leaked onto the main logic board.
  • You own a laser printer (irrelevant).

The Canon Service Tool 4905 is a powerful, community-driven lifesaver for budget-conscious users and eco-friendly repair enthusiasts. It keeps thousands of printers out of landfills every month. However, treat it with respect: wrong clicks can convert your printer into a paperweight.

By following this guide—matching the tool to your model, carefully entering service mode, resetting only the waste ink counters, and physically maintaining the pads—you can extend the life of your Canon PIXMA printer by years.

Last updated: October 2025. No affiliation with Canon Inc. Use at your own risk.

The Canon Service Tool V4905 is a specialized software utility used primarily by technicians and advanced users to perform deep maintenance on Canon PIXMA printers. Its most critical function is resetting the "Waste Ink Counter" when it reaches its limit, typically indicated by error codes like 5B00 or P07, which would otherwise halt all printing. Key Features and Compatibility

Primary Use: Effectively clears error codes (5B00, P07, E08) that signal a full ink absorber pad. canon service tool 4905

Supported Series: Compatible with a wide range of PIXMA models including: IP Series: iP2700, iP2770, iP4800, iP7240, and more. MG Series: MG3540, MG3670, MG5770, MG7770, etc.. MP Series: MP230, MP250, MP280, MP287. MX Series: MX320, MX397, MX410, MX497, MX537. G Series: G1000, G2000, G3000.

Unsupported Models: Specifically cannot reset certain models like the E40x, E41x, MG24xx, and TR457 series. How to Access Service Mode

Before the tool can communicate with your printer, the device must be put into Service Mode manually: Service Tools for Canon Printers - PrinterKnowledge

The Canon Service Tool V4905 is a specialized utility designed for maintenance and repair tasks on Canon inkjet printers, specifically focusing on resetting internal counters. It is primarily used to address the "waste ink absorber full" error, which effectively locks a printer once its internal waste pads have reached a predetermined saturation level. Functionality and Compatibility

The V4905 version is an update in a series of tools used by service technicians to communicate with a printer while it is in "Service Mode." Its primary functions include:

Ink Counter Resets: Resetting the "absorber" or "main" ink counters to zero after the physical pads have been cleaned or replaced.

EEPROM Information: Reading and printing internal printer data, such as page counts and error history, for diagnostic purposes. Report: Canon Service Tool v4905 Date: October 26,

Print Head Cleaning: Triggering deep cleaning cycles more effectively than the standard user interface might allow.

This version supports a wide range of models, including the G-series (G1000, G2000, G3000, G4000), E-series (E400, E410, E470), and various MG and IP models. However, it does not work on "disposable" models like the MG24xx or MG25xx, which often require hardware-level chip flashing rather than software resets. Critical Usage Requirements

To use the tool, the printer must first be placed into Service Mode. This typically involves a specific sequence of button presses:

Turn off the printer but leave it connected to the PC via USB. Hold the Stop/Resume button and then press and hold Power.

While holding Power, release Stop/Resume and press it 5 or 6 times (depending on the model) before releasing both buttons.

Caution: If the printer's service mode is "locked" or damaged due to previous failed attempts or using incompatible software (often indicated by an Error Code 002 or 006), the Service Tool will not function. In such cases, the only solution is replacing the printer's logic board or manually reflashing the EEPROM chips. Acquisition and Safety

Step 6: EEPROM Check (Optional but Recommended)

  • Click the EEPROM button. A text window will appear. Scroll down – you should see Dd=000.0 or Main=0. This confirms the counter is zeroed.

Conclusion

The Canon Service Tool 4905 can be a powerful aid for advanced printer maintenance and repairs but should be used cautiously: confirm compatibility, understand risks to warranty and hardware, and prefer official service for critical or under-warranty devices. Error 3: Printer Still Shows Error 5B00 After Reset

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Subject: Canon Service Tool v4905 – Usage, Risks, and Download Information

Body:

The Canon Service Tool v4905 (also known as ST4905) is a proprietary software utility designed for Canon inkjet printer service technicians. Unlike standard maintenance drivers, this low-level tool grants access to the printer’s EEPROM and internal service mode, bypassing normal user restrictions.

Troubleshooting Common Errors with ST4905

| Error | Likely Cause | Solution | |-------|--------------|----------| | "Tool cannot find printer" | Printer not in service mode, or using Wi-Fi | Re-enter service mode; use USB cable | | "Communication error V5.0" | Driver conflict | Install Canon printer drivers normally first | | "EEPROM write failed" | Write protection on some newer firmwares | Downgrade firmware (advanced) or use newer tool | | Printer still shows 5B00 after reset | Platen counter not reset | Click both "Main" and "Platen" in tool | | Tool crashes on launch | Missing Visual C++ runtimes | Install Microsoft Visual C++ 2010-2022 redistributables |

Legal and Ethical Considerations

The Canon Service Tool 4905 is distributed in a grey area. Canon never authorizes end-users to access service mode. However, in many countries (including the US under the Magnuson-Moss Warranty Act), using third-party tools for maintenance does not automatically void warranty unless the tool directly caused damage.

That said:

  • Copyright: The tool’s source code is Canon’s intellectual property. Distributing modified versions is illegal.
  • E-waste: Using this tool is actually environmentally positive—it prevents perfectly functional printers from being thrown away due to a software lock.

You can legally download the tool from various tech forums (e.g., BadCaps, PrinterKnowledge) or GitHub repositories that reverse-engineered the protocol. Always scan downloaded .exe files with antivirus software—some repackaged versions contain malware.

Why I can’t provide this

  1. Official restriction – Canon designates these tools exclusively for authorized service centers. They are not intended for end users.
  2. Risk of misuse – The tool can permanently alter printer firmware, EEPROM, waste ink counters, region settings, and serial numbers. Incorrect use can brick your printer or void any remaining warranty.
  3. Potential for fraud – Features include resetting page counters, which is sometimes misused to misrepresent a printer’s usage history.