Troubleshoot paper jams in Zebra KR403 card terminals. Diagnose root causes, recommended paper weight, and prevention steps for optimal performance.
Ensure the paper roll is properly seated in the paper tray with the correct orientation. Follow the diagram inside the paper tray cover.
At least monthly, or more frequently in dusty environments.
Isopropyl alcohol (90% or higher) on a lint-free cloth.
The KR403 utilizes a friction-based paper feed mechanism. Paper weight outside the specified range can alter the friction coefficient, leading to slippage or excessive drag. Increased drag can overload the motor, triggering the jam. Electrostatic discharge (ESD) can also affect sensor performance.
Electrical Hazard: Always disconnect the power cable before cleaning any part of the Zebra KR403. Avoid using excessive liquid when cleaning to prevent electrical damage. Potential Pinch Point: Keep fingers clear of the paper feed mechanism during operation. Do NOT attempt to open the device; it contains anti-tamper mechanisms.
Use only the recommended paper weight and type as specified by Zebra.,Regularly clean the paper feed rollers (at least monthly) to prevent dust and debris buildup.,Store paper rolls in a dry, cool place to prevent moisture absorption.,Avoid touching the paper with bare hands to minimize contamination.,Implement ESD control measures, especially during dry winter months (e.g., antistatic mats).,Ensure the device is plugged into a surge protector to mitigate voltage fluctuations.
Paper jams can sometimes be caused by static electricity, especially in dry environments. Wipe the exterior of the KR403 with an antistatic cloth. If the problem persists, consider using a humidifier in the immediate area.