canon pixma mg3620 paper isn't feeding right, keeps jamming or misfeeding

Diagnosis

The Canon PIXMA MG3620 utilizes a friction-based pickup system where rubber rollers grip the top sheet of paper to pull it into the print carriage path. Over time, these rollers accumulate a mixture of paper dust, ink residue, and environmental debris. This creates a "slick" surface on the rubber, reducing the coefficient of friction. When the rollers spin but fail to grip the paper, the printer detects a "Paper Feed Error" or an "E03" error code because the internal sensors do not detect the paper moving at the expected speed. In many cases, the issue isn't just dirt, but a physical misalignment of the paper guides or a foreign object lodged in the rear tray. Because the MG3620 uses a rear-loading tray, gravity helps the process, but any slight skew in the paper stack will cause the rollers to grab the page unevenly, leading to a diagonal jam or a "multi-sheet feed" where the rollers pull three or four pages at once. If you hear a rhythmic clicking or grinding sound during the feed attempt, the rollers are slipping against the paper surface rather than gripping it.

How to Fix It

To resolve a persistent misfeed, you must perform a deep cleaning of the pickup rollers and reset the paper tension. Follow these exact steps:

1. Power off the printer and unplug the power cord from the wall to prevent electrical shorts during manual cleaning.
2. Clear the rear tray of all paper. Use a flashlight to inspect the tray for small debris, such as staples, paper clips, or torn scraps of paper from previous jams.
3. Locate the rubber pickup rollers at the base of the rear feed slot. Dampen a lint-free cloth or a cotton swab with distilled water or 70% isopropyl alcohol. Do not saturate the cloth; it should be damp, not dripping.
4. Gently wipe the rubber surface of the rollers, rotating them manually if possible, to remove the grey layer of paper dust. Ensure you clean the entire circumference of the roller.
5. Allow the rollers to dry completely for 5 minutes.
6. Plug the printer back in and power it on. Access the printer driver on your PC: Navigate to Devices and Printers > Right-click Canon MG3600 series > Printing Preferences > Maintenance tab.
7. Select Roller Cleaning. When prompted, load a single sheet of plain A4 or Letter size paper. This process forces the rollers to spin at high speed against the paper to "scrub" off remaining residue.
8. Once the cycle finishes, fan your paper stack to remove static electricity and slide the paper guides snugly against the edges of the stack—ensure they are not so tight that the paper bows, but not so loose that the paper shifts.

If That Didn't Work

• Check for "Paper Curl" Issues: If you are using heavy cardstock or photo paper, the MG3620 often struggles with the curvature. Gently bend the paper in the opposite direction of the curl before loading it into the rear tray to ensure the rollers have a flat surface to grip.
• Inspect the PF (Paper Feed) Sensor: Open the rear cover and look for the small plastic "finger" (the actuator) that tells the printer paper is present. If this finger is stuck or bent, the printer will report a jam even if the paper is moving. Gently flick it with a toothpick to ensure it springs back into place.
• Switch Paper Weights: If you are using ultra-thin paper (under 60g/m²), the rollers may slip. Try loading a higher-grade 20lb bond paper. Conversely, if using heavy glossy paper, ensure you have selected the "Photo Paper Plus Glossy II" setting in the driver, as this slows the motor speed to prevent jams.
• Manual Roller Reset: If the rollers are physically worn down (smooth and shiny), cleaning will not work. You can attempt to "rough up" the rubber by very lightly rubbing the surface with a fine-grit sandpaper (400 grit) to restore the grip, though this is a temporary fix before the rollers need replacement.

Heads Up

• Avoid using "cheap" or generic recycled paper that produces excessive lint, as this will clog the MG3620 rollers significantly faster than premium brands.
• Never use a vacuum cleaner directly on the internal rollers, as the static discharge can damage the logic board of the printer.
• Always load paper in small increments. Overfilling the rear tray puts undue pressure on the rollers and is the leading cause of multi-page jams.
• Keep the printer covered with a dust cloth when not in use to prevent airborne particles from settling on the pickup mechanism.