The Quick Answer
Support codes on Canon MAXIFY GX MegaTank printers signal cassette feed jams, maintenance cartridge saturation, or printhead thermal protection events. Most errors stem from exhausted maintenance cartridges (code 1726) or printhead overheating (code 5200), which occurs when empty ink tanks cause nozzles to fire dry without liquid coolant.
Canon MAXIFY GX Series Models Covered
This troubleshooting guide applies to Canon's official commercial MegaTank lineup: For troubleshooting related components, consult Canon PIXMA TS6420 Error Code List & Meaning.
- MAXIFY GX7000 Series (GX7020, GX7021): High-volume office all-in-one with two 250-sheet paper cassettes (Cassette 1 and Cassette 2), automatic document feeder, GI-26 pigment ink, and user-replaceable MC-G01 maintenance cartridge (right side door).
- MAXIFY GX6000 Series (GX6020, GX6021): Single 250-sheet cassette (Cassette 1) + 100-sheet rear tray, GI-26 pigment ink, and MC-G01 maintenance cartridge (right side door).
- MAXIFY GX5000 Series (GX5020): Single-function printer with single cassette + rear tray, GI-26 pigment ink, and MC-G01 maintenance cartridge.
- MAXIFY GX4000 Series (GX4020) & GX3000 Series (GX3020): Compact MegaTank models with front cassette + rear flat paper path, GI-26 pigment ink, and MC-G03 maintenance cartridge.
- MAXIFY GX2000 Series (GX2020) & GX1000 Series (GX1020): Compact home-office MegaTank models using GI-25 pigment ink bottles and user-replaceable MC-G05 maintenance cartridge.
Official Canon MAXIFY GX Support Code Reference Table
The following table details support codes documented in Canon's official MAXIFY GX online technical manuals, split by series where cassette numbers differ.
| Support Code | Applicable Series | Screen Message / Meaning | Official Action |
|---|---|---|---|
| 1007 | GX7000 Series | There is no paper in cassette 1. | Load paper into cassette 1, align guides, and tap OK on touch screen. |
| 1008 | GX7000 Series | There is no paper in cassette 2. | Load paper into cassette 2, align guides, and tap OK on touch screen. |
| 1003 | GX6000, GX5000, GX4000, GX3000 | There is no paper in the cassette. | Load paper into the cassette, align guides, and tap OK on touch screen. |
| 1070 | All GX Series | Paper feed roller is dirty. | Execute Roller Cleaning via Setup > Maintenance on the touch screen. |
| 1300 | All GX Series | Paper is jammed. | Open front cover, remove jammed sheet slowly with both hands. |
| 1303 | All GX Series | Paper jammed in rear cover. | Detach rear transport unit, extract jammed sheet, reattach securely. |
| 1725 | All GX Series | Maintenance cartridge almost full. | Tap OK on touch screen to continue; obtain a replacement maintenance cartridge. |
| 1726 | All GX Series | Maintenance cartridge is full. | Replace maintenance cartridge with designated part (MC-G01, MC-G03, or MC-G05). |
| 1890 | All GX Series | Protective material remains. | Open scanning unit, remove all orange shipping tape and transport clips. |
| 5100 | All GX Series | Printer error has occurred (Carriage error). | Clear carriage path obstructions; gently clean linear timing strip if smudged. |
| 5200 | All GX Series | Printer error has occurred (Printhead overheating). | Check ink levels, unplug power cord for 10 minutes to cool down, execute Ink Flush. |
| 6000 | All GX Series | Printer error has occurred (Line feed error). | Clear paper scraps around feed rollers and timing slit disk, power cycle printer. |
| B506 / B508 / B509 | All GX Series | Printer error has occurred. | Turn off the printer and unplug it. Plug in the printer again and turn it back on. If problem persists, contact nearest Canon service center. |
For complete model-specific references, consult Canon's official manuals: GX7000 Series Support Code List, GX6000 Series Support Code List, and GX4000 Series Support Code List.
Resolving Support Code 5200 on MAXIFY GX Printers
Unlike standard cartridge printers, MAXIFY GX models continuously draw ink from large internal reservoirs through silicone tubes into a permanent printhead. Liquid ink dissipates the thermal energy produced by the microscopic resistor nozzles during firing.
If you have questions regarding continuous supply faults, review our guide to Canon MAXIFY GX ink detection and continuous supply troubleshooting.
Step-by-Step Code 5200 Resolution
- Check Tank Ink Levels: Look directly at the clear front windows on all four ink tanks (Black, Cyan, Magenta, Yellow). If any tank has dropped below the lower limit dot, refill it immediately with genuine Canon GI-26 pigment ink (or GI-25 for GX1020/GX2020). Never allow ink to fall below this safety marker.
- Execute the 10-Minute Power Cool-Down: Turn off the printer using the front Power button. Disconnect the power cord from the electrical outlet. Wait a full 10 minutes to allow the printhead ceramic plate and thermistor sensors to cool back to ambient room temperature.
- Inspect Ink Tubes for Air Gaps: Plug the printer back in and open the scanning unit. Inspect the transparent tubes leading to the printhead carriage. If you observe continuous air bubbles or empty sections, follow our instructions for purging air bubbles and ink tube clogs in Canon MegaTank printers.
- Perform an Ink Flush: On the touchscreen, tap Setup (gear icon) > Maintenance > Ink Flush. Select all colors and confirm. This forces the purge pump to pull fresh ink through the delivery lines, restoring the liquid thermal buffer to the nozzles.
- Verify Temperature Stabilization: Print a nozzle check pattern. If all lines print cleanly without gaps, code 5200 is resolved. If the error returns immediately upon heating up, consult our technical breakdown of Canon error 5200 overheating diagnostics.
Replacing the Maintenance Cartridge (Support Code 1726)
Support Code 1726 halts all printing operations when the user-serviceable waste ink maintenance box is saturated.
- Power on the printer and open the maintenance cartridge access door (located on the right side on GX6020/GX7020/GX5020, or on the rear on GX3020/GX4020/GX1020/GX2020).
- Loosen the coin screw securing the cartridge retaining cover.
- Slide the saturated maintenance cartridge straight out. Place it inside the plastic disposal bag included with your new cartridge.
- Slide the new maintenance cartridge (MC-G01, MC-G03, or MC-G05 depending on your model) into the guide rails until it clicks securely into place.
- Replace the retaining cover and tighten the screw. The printer will recognize the new EEPROM chip immediately and clear Code 1726 without requiring any service tools.


