Troubleshooting barcode scanner failure on Dejavoo Z11 payment terminals. Identify potential causes and non-invasive solutions. ESD precautions. PCI-PTS safety.
Check the device's warranty status before proceeding with any repairs.
Physical damage can affect the scanner's performance.
Error messages provide additional clues about the problem.
Barcode scanners on the Dejavoo Z11 typically operate using a laser or LED light source, a photodetector, and a decoder. The scanner's performance is affected by the light source intensity, photodetector sensitivity, signal processing speed, and the cleanliness of the scan window. Voltage fluctuations or electrostatic discharge (ESD) can impact the scanner's micro controller. Scanner data is transmitted via a serial interface (likely UART) at a specific baud rate to the main processor.
The Dejavoo Z11 barcode scanner is failing to read or decode barcodes. This may manifest as no scan, intermittent scans, or incorrect data output.
The Dejavoo Z11 is a PCI-PTS certified payment terminal. Do not attempt to open the device casing or perform any internal modifications. Doing so will trigger tamper detection mechanisms and permanently disable the device. Always unplug the device before cleaning or inspecting cables. ESD can damage electronic components; ground yourself before handling the device.
Try scanning a known-good, high-contrast barcode printed on high-quality paper. This can help differentiate between a scanner issue and a problem with the barcode itself. Use a magnifying glass to inspect the scanner window for micro-scratches that may not be visible to the naked eye.