Error Code C5603 on a Konica Minolta C224e printer indicates a problem with the Tandem Tray Communication. If you've already tried cleaning and reseating the connectors without success, there are a few more troubleshooting steps you can take:
Restart the printer: Turn off the printer completely, wait for a few minutes, and then turn it back on. Sometimes, a simple reboot can resolve communication issues.
Check the network connection: If your printer is connected to a network, ensure that the network cables are securely connected. You may also try restarting your router or network switch to rule out any network-related problems.
Update the firmware: Visit Konica Minolta's support website and check if there are any firmware updates available for your printer model. If updates are available, follow the instructions to install them. Firmware updates can often address known issues and improve printer performance.
Check for paper jams or obstructions: Even if the error code doesn't directly reference paper jams, any mechanical obstruction in the paper path can cause communication problems. Carefully inspect the paper trays, bypass tray, and internal compartments for any paper jams, bits of torn paper, or foreign objects. Clear any obstructions you find.
Reset the printer to factory settings: This step should only be taken if you have exhausted all other troubleshooting options. Refer to the printer's manual or Konica Minolta's support documentation to find the procedure for resetting the printer to its factory settings.
Contact technical support: If none of the above steps resolve the issue, it's time to reach out to Konica Minolta's technical support team or a certified service technician. They will have access to more in-depth diagnostic tools and can guide you through further troubleshooting or arrange for a service visit if necessary.
Always exercise caution when attempting any printer repairs yourself, as you could inadvertently cause additional problems. If the printer is still under warranty, avoid doing anything that might void the warranty and contact the manufacturer for assistance.