Model-specific reset guide
Canon MP638 Ink Absorber Full Reset
If Canon MP638 displays an ink absorber full or service-required warning, the stored waste ink counter may have reached its limit. This guide covers service mode, USB preparation and the reset itself.
The waste ink counter inside Canon MP638
Canon MP638 uses a stored counter as a maintenance safeguard. Reaching the threshold can produce an Ink Absorber Full, Service Required or related support-code message.
Wic Reset Connect is designed to reset the compatible counter in Canon MP638. The physical waste ink system should still be inspected and maintained when necessary.
How to enter service mode on Canon MP638
- Turn the printer off.
- Nhấn và giữ Dừng/Đặt lại.
- Trong khi giữ nút Stop/Reset, nhấn và giữ. Công suất.
- Release Stop/Reset but keep holding Power.
- Press and release Stop/Reset 2 times.
- Wait briefly, then release Power. The power indicator should remain steadily lit.
Reset the counter in Canon MP638
Prepare Canon MP638 before entering the key. A stable service-mode state and direct USB connection are essential.
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Prepare the printer
Resolve other errors, confirm a steady power light and enter service mode using the sequence above.
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Connect directly by USB
Connect Canon MP638 to a Windows 7, 8, 10 or 11 computer without Wi-Fi or a USB hub.
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Start Wic Reset Connect
Run the program as Administrator and wait until the Canon service-mode device is detected.
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Enter the key and reset
Enter the purchased key, select Reset and keep the printer connected until confirmation appears.
If Canon MP638 is not detected
- Run Wic Reset Connect as Administrator and keep internet access active for key validation.
- Close Canon maintenance utilities and clear paused print jobs before opening Wic Reset Connect.
- Repeat the button sequence at a steady pace; releasing Power too early is a common reason service mode fails.
- If Windows does not detect a service-mode device, restart the printer normally, wait 10 seconds and repeat the preparation.
Canon MP638 reset FAQ
Does the reset clean the ink absorber?
No. It resets the stored counter. Inspect, clean or replace the absorber pads when their physical condition requires maintenance.
Does Canon MP638 require service mode?
Yes. The printer must expose its maintenance interface before the counter can be reset with Wic Reset Connect.
Tôi nên nhấn nút Stop/Reset bao nhiêu lần?
For Canon MP638, use 2 Stop/Reset presses in the sequence shown on this page.
Restore Canon MP638
Prepare Canon MP638, enter service mode and complete the reset with a valid Wic Reset Connect key.