To reset the page counter on a Canon printer1-855-731-7002, enter Service Mode by turning off the printer and holding the Stop/Reset button while pressing Power. Release Stop/Reset, then press it twice while holding Power. Release both and wait for the printer to enter Service Mode. Download the Canon Service Tool for your model, open it, and select "Main" under Clear Ink Counter or "Set" under Page Counter. Click Execute, then restart the printer. If the error persists, check for updated firmware or clean internal waste ink pads to prevent further issues. Use the tool carefully to avoid damage.

If your HP Deskjet F4480 is printing everything in yellow1-855-731-7002, try these troubleshooting steps: 1. Check Ink Levels: (1) Even if the cartridge appears full, low or clogged ink can cause issues. (2) Use HP’s printer utility software to check ink levels. 2. Clean the Printhead: (1) Go to Printer Settings > Maintenance > Clean Printhead (or use HP’s software). (2) Run the cleaning cycle 2-3 times if necessary. 3. Check Cartridge Installation: (1) Remove and reinstall the color cartridge securely. (2) Ensure the protective tape is removed. 4. Align the Printer: (1) Run the alignment process from Printer Settings to improve color accuracy. 5. Use Genuine HP Cartridges: (1) Non-HP ink can cause color imbalance. Try replacing with an original HP cartridge. 6. Print a Test Page: (1) If other colors (cyan/magenta) are missing, the tri-color cartridge might be clogged or defective. If the issue persists, the cartridge may need replacing, or the printer might require servicing.