Dejavoo Z11: Diagnosing Network Connection Errors -... | terminalfaults.org

Technical Background:

Network connectivity relies on stable voltage levels (5V for data, 12V for power) and correct baud rates (typically 9600-115200 bps). Signal attenuation due to cable damage or electromagnetic interference (EMI) can disrupt data transmission. Static discharge (ESD), particularly in dry environments, can damage the network interface chip.

Symptoms:

The Dejavoo Z11 terminal displays a 'Connection Error' message, preventing transaction processing via network connection.

Possible Causes:

Damaged Ethernet cable or loose connection.
Incorrect network configuration settings (IP address, gateway, DNS).
Network infrastructure issues (router, switch, internet service provider outage).
Firewall blocking the terminal's network access.
Outdated terminal firmware causing network incompatibility.
Electromagnetic interference (EMI) from nearby equipment.

Solution:

1

Inspect the Ethernet cable for physical damage (bends, cuts) and ensure it is securely plugged into both the terminal and the network port.
2

Verify the terminal's network configuration (IP address, gateway, DNS) is correct and compatible with the network settings. Access the network settings via the terminal's administration menu.
3

Test the network connection by pinging a known-good IP address (e.g., 8.8.8.8 - Google's public DNS server) from the terminal's diagnostic menu, if available.
4

Restart the terminal by unplugging it from the power outlet, waiting 10 seconds, and then plugging it back in.
5

Check the network router or switch for connectivity issues. Restart the router or switch if necessary.
6

Confirm that the terminal's MAC address is not blocked by the network firewall. Consult with the IT department to verify firewall settings.
7

If possible, test the terminal with a different Ethernet cable and network port to rule out cable or port issues.

Safety Warning:

Avoid placing the terminal near sources of strong electromagnetic fields. Unplug the device from the power source for Safe Handling before inspecting cables. Never attempt to open the terminal casing. Ensure the terminal is placed on a stable, dry surface.

Prevention:

Regularly inspect Ethernet cables for damage. Secure cables to prevent strain. Clean the touchscreen with a dry, lint-free cloth to remove static buildup. Ensure adequate ventilation around the terminal to prevent overheating. Apply ESD wrist straps when handling the device during dry months.

Expert Tip:

If the terminal supports DHCP, try switching to a static IP address, or vice-versa. Sometimes, DHCP server issues can cause intermittent connection problems. Check the terminal's system logs (if accessible) for detailed error messages related to network connectivity.

Frequently Asked Questions

•How do I access the network settings on the Dejavoo Z11?

Access the administrative menu by pressing the designated admin key sequence (consult the user manual). Navigate to the network settings section to view and modify IP address, gateway, and DNS settings.

•What is the default IP address of the Dejavoo Z11?

The Dejavoo Z11 typically uses DHCP to obtain an IP address automatically. If a static IP address is required, consult your network administrator for a suitable IP address within your network's range.

•Where can I find the latest firmware updates for the Dejavoo Z11?

Firmware updates are typically provided by your payment processor or Dejavoo directly. Contact their support channels to inquire about the latest firmware and instructions for updating your device.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the network settings on the Dejavoo Z11?

•What is the default IP address of the Dejavoo Z11?

•Where can I find the latest firmware updates for the Dejavoo Z11?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: