Fix Canon E500/E510 Error P07 with Service Tool v3400 on Windows

The printer had been working fine all morning. Then, mid-document, it just stopped — the LCD blinked Error P07 and refused to do anything else. My first instinct was that something had failed mechanically: a clogged head, a snapped gear, something that would mean a repair shop. I was already mentally calculating the cost. Turns out it was a software counter, and the fix took less than five minutes. Error P07 on the Canon E500 and E510 means the printer's internal waste ink counter has hit its maximum value. The printer tracks how much ink the waste pads absorb over time, and once that number maxes out, it locks itself down — even if the pads still have physical capacity. The counter is a software safeguard, not a hardware failure, and you can reset it yourself using Canon Service Tool v3400 on Windows.

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The Canon E500 and E510 are nearly identical printers — same mechanism, same internals, same quirks. Both use the same counter system, and both display P07 in the same way when the limit is reached. This is not a sign that your printer is broken. Canon builds the counter in to prevent waste ink from overflowing and damaging internal components or leaking onto your desk. Once it trips, the printer refuses to operate until the counter is manually zeroed in the EEPROM chip. In most cases — especially on a first-time maxout — the physical pads still have room, and a software reset is entirely safe to do.

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Because the Service Tool communicates directly with the printer's mainboard memory, improper handling can corrupt the firmware and brick the printer permanently. Follow these safety rules strictly:

1. Direct USB Connection: Always connect the printer directly to a motherboard USB port. Never use a USB hub or extension cable, as data dropouts during memory writes can crash the EEPROM.
2. Disconnect Other Printers: Ensure no other printers or scanners are connected to the PC during this process. The service tool sends commands to the default USB printing port, which can confuse or damage other devices.
3. Verify Service Mode First: Never run the Service Tool software until you are absolutely certain the printer has entered Service Mode (indicator lights solid green, display blank). Clicking buttons in the tool while the printer is in normal mode will cause the tool to freeze and crash.

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Have these ready before going through the steps:

• A Canon E500 or E510 connected to your Windows PC via direct USB
• A few sheets of blank paper loaded in the printer tray
• Windows Defender (or any other antivirus) temporarily disabled — the resetter tool triggers false positives almost universally. You can follow my step-by-step walkthrough to disable Windows Defender temporarily on Windows 11 for this.
• Service Tool v3400 downloaded and extracted (links in the next section)

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Service Mode is a hidden diagnostic state that gives the reset tool direct access to the printer's internal counter. Without it, the software has no way to communicate with the printer correctly. This button sequence is the most critical part of the entire process — follow it exactly. If the printer just powers on normally without any change, unplug the power cable, wait a few seconds, and try the sequence again from the beginning. The order matters more than how fast you press — take it steady.

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Download the Application

If you don't have the resetter yet, grab it from one of the links below: Canon ServiceTool v3400180 KBDownload Canon ServiceTool v3400180 KBDownload

Run the Reset Process

With the printer in Service Mode and the application extracted, go through these steps:

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After the printer restarts, the display should be clear — no blinking error code, no locked state. Send a test print from your PC. If the job goes through and prints normally, the reset was successful. If P07 reappears immediately after the printer powers back on, the printer most likely didn't fully enter Service Mode during Step 1 — this is the most common reason the reset doesn't take. Go back to the beginning of Step 1, repeat the button sequence carefully, and run the reset tool again.

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Resetting the counter gives the printer a clean slate on the software side, but the physical waste pads are still accumulating ink with every print job. After several resets spread over a few years, you may start noticing ink staining the underside of the printer — at that point, the pads genuinely need replacing, not just another counter reset. For typical home printing volumes, one reset usually buys several more years of normal use without any issue. If you have an Epson printer dealing with a similar counter-based lockout — usually shown as a "Service Required" message — the fix works on the same principle but uses different software. I covered the full process for the Epson L4150 and L4160 if that's relevant to you.

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If the reset worked, or if you ran into a snag at a specific step, leave a comment below. The Service Mode sequence is where most people get stuck the first time — and knowing exactly where it went wrong usually makes it a quick fix.