printer says 'support code 6000' and the orange light is flashing, can't do anything

Diagnosis

Support Code 6000 on the Canon PIXMA G7020 is a critical carriage malfunction error. It indicates that the printer's internal logic has detected an obstruction or a mechanical failure preventing the print head carriage from reaching its "home" position or moving freely across the encoder strip. This is rarely a software glitch and is almost always a physical blockage or a sensor failure. The error typically triggers when the carriage hits a physical stop—such as a torn piece of paper, a dislodged ink tank cap, or a foreign object—or when the transparent encoder strip (the thin plastic ribbon running across the width of the printer) becomes smudged with ink or grease. If the sensor cannot read the timing marks on the strip, the printer halts all operations to prevent the motor from burning out or the carriage from crashing into the side walls. You can confirm this by attempting to power on the device; if you hear a loud grinding noise or a sharp "thump" before the orange light flashes, there is a physical obstruction.

How to Fix It

To resolve Support Code 6000, you must clear the mechanical path and reset the carriage positioning. Follow these exact steps:

1. Power off the printer using the power button and disconnect the AC power cord from the wall outlet. This is vital to discharge the capacitors and reset the carriage motor.
2. Open the scanning unit/cover to expose the interior. Carefully reach inside and check for any small scraps of paper, staples, or paperclips. Use a flashlight to look specifically at the far right and far left ends of the carriage rail.
3. Gently grasp the print head carriage and attempt to slide it manually from one side to the other. If it resists or feels "springy," look for a jammed piece of paper tucked under the carriage rail.
4. Locate the encoder strip—the thin, clear plastic strip that runs horizontally across the printer. Use a dry, lint-free microfiber cloth or a cotton swab dipped in a tiny amount of distilled water (do not use alcohol) to gently wipe the strip from left to right. Do not pull on the strip, as snapping it will require a full hardware replacement.
5. Ensure the ink tank caps are seated firmly and that no ink has leaked onto the carriage rails, as sticky ink can cause the carriage to drag and trigger the 6000 error.
6. Close the cover, plug the power cord back in, and power on the device.

If That Didn't Work

• Perform a Hard Logic Reset: With the printer on and showing the error, unplug the power cord from the back of the machine. Hold the power button down for 30 seconds to drain all remaining electricity. Plug it back in and restart. This forces the carriage to re-home from a zero-point.
• Inspect the Paper Feed Rollers: Sometimes a jam in the rear tray feeds a piece of paper into the carriage path that isn't visible from the front. Open the rear cover (if applicable) and use a can of compressed air to blow out any debris from the paper feed mechanism.
• Check for Carriage "Sled" Misalignment: If the printer was recently moved, the carriage may have jumped its track. Carefully lift the carriage slightly and ensure it is seated perfectly on the metal rail. If it is tilted, it will trigger the 6000 error immediately upon startup.
• Clean the Contact Pins: If the carriage moves but the error persists, the print head contacts may be dirty. Open the printer, lift the print head locking lever, remove the print heads, and gently wipe the gold contact points with a dry cloth before re-inserting them firmly.

Heads Up

• Avoid Lubricants: Never apply WD-40 or oil to the carriage rails. The PIXMA G7020 uses a specific factory grease; adding one-off lubricants can attract dust and create a sludge that causes the carriage to stick, leading back to Support Code 6000.
• Handle the Encoder Strip with Care: The encoder strip is extremely fragile. If you accidentally stretch it or snap the spring holding it, the printer will lose its position and the error will become permanent.
• Paper Quality Matters: Using overly thick cardstock or non-standard labels often leads to "micro-jams"—small tears of paper that accumulate on the rails and eventually trigger carriage errors.
• Ink Level Maintenance: Always keep your MegaTank reservoirs filled. If the printer runs completely dry, the print heads can overheat and warp, potentially causing them to physically bind against the carriage rail.