Dejavoo Z11 screen flicker only during printing. Diagnostic steps to isolate power issues, serial data corruption, and prevent future failures.
This could indicate a current-draw issue during printing. More text = more activity = more current draw.
Shared outlets can introduce voltage fluctuations.
Extreme environments can degrade components and connections.
Screen flickering during printer operation can be caused by voltage drops during printing, serial communication (baud rate) issues between the mainboard and the printer module, electromagnetic interference (EMI) from the printer motor affecting the display, or degraded power supply capacitors. Thermal expansion from printer activity could also influence connector integrity. Signal attenuation across shared power/data lines can also manifest.
Electrical shock hazard. Always unplug the Z11 from the power outlet before performing any inspection or cleaning. Do not use excessive force when handling cables or connectors. Avoid operating the device in wet or damp environments. NEVER open the device casing, as this will void the warranty and potentially damage the device's tamper-evident security features.
Regular cleaning: Clean the touchscreen and exterior casing regularly with a lint-free cloth and approved cleaning solution.,Cable management: Ensure power and data cables are properly managed to prevent strain and damage. Use cable ties or organizers.,Surge protection: Use a surge protector to protect the Z11 from power surges and voltage spikes.,Humidity control: Maintain adequate humidity levels, especially during dry winter months, to minimize electrostatic discharge (ESD).,Dust control: Regularly remove dust from the surrounding area to prevent it from accumulating inside the device through ventilation openings.
Try a 'cold boot'. Disconnect both the power and battery (if accessible externally) for 60 seconds. Reconnect and test. This can sometimes clear transient errors that cause screen flicker. Monitor the ambient temperature; overheating can exacerbate component failure. Verify the Dejavoo Z11 firmware version. An outdated firmware could be causing an incompatibility issue with the printer driver.