Diagnosing recurring printer jam errors on a Dejavoo Z11 terminal. Includes troubleshooting steps, prevention, and safety warnings for retail environments.
Consult the Dejavoo Z11 user manual for approved paper types, widths, and thicknesses.
Firmware updates are typically provided by Dejavoo technical support or your payment processor. Contact them directly.
Visit the Dejavoo website or consult your terminal documentation for contact information.
The Z11 printer mechanism relies on a stepper motor controlled by the mainboard. An optical sensor detects paper presence/absence. The print head thermal element is controlled via a MOSFET. Error reporting is handled by firmware. Low voltage to the printer motor, a faulty optical sensor, or firmware bugs can trigger false jam errors.
Safe Handling: Ensure the terminal is unplugged from the power source before any inspection. Avoid applying excessive force when clearing paper jams. Be aware of potential sharp edges within the printer mechanism. ESD Precautions: In dry environments (especially during winter), ground yourself before touching the terminal to prevent electrostatic discharge.
Use only manufacturer-approved paper rolls. Regularly clean the printer mechanism with compressed air. Ensure adequate ventilation to prevent overheating. Avoid cable strain on the power and data cables.
Try performing a printer self-test (consult the Dejavoo Z11 manual for the key combination). If the self-test fails, it strongly indicates a hardware problem within the printer mechanism itself. Check the external power supply with a multimeter.