Dejavoo Z11 PIN Pad Offline Error: Technical Diagnostic... | terminalfaults.org

Technical Background:

The 'Offline' error typically indicates a communication failure between the PIN pad and the main terminal or host system. Potential causes include:
1. **Voltage Drop:** Insufficient voltage can disrupt communication.
2. **Baud Rate Mismatch:** Incorrect serial communication settings.
3. **Cable Integrity:** Damaged or improperly connected cables cause signal attenuation.
4. **ESD Interference:** Electrostatic discharge can corrupt data or damage components.
5. **Firmware Issues:** Corrupted or outdated firmware can lead to communication errors.
6. **USB enumeration failure:** The device might fail to properly register on the USB bus.

Symptoms:

Dejavoo Z11 PIN pad displays an 'Offline' error, preventing transaction processing.

Possible Causes:

Faulty or loose cable connection between the PIN pad and the terminal.
Power supply issues resulting in insufficient voltage to the PIN pad.
Corrupted or outdated firmware on the PIN pad.
Electrostatic discharge (ESD) damage affecting the communication interface.
Incorrect communication settings (baud rate, parity) between the PIN pad and the terminal.
USB port failure on the main terminal.

Solution:

1

Power Cycle: Disconnect and reconnect the power supply to both the PIN pad and the main terminal. Wait 30 seconds before reconnecting.
2

Cable inspection: Examine the cable connecting the PIN pad to the terminal for any visible damage (cuts, bends, frayed wires).
3

Cable Re-seating: Disconnect and securely reconnect the cable at both ends (PIN pad and terminal).
4

Try alternate USB port: Test the PIN pad with a different USB port on the main terminal.
5

Terminal Reboot: Reboot the main terminal to refresh its connection with the PIN pad.
6

Firmware Update: If available, update the PIN pad firmware using the Dejavoo utility. Consult Dejavoo's official documentation.
7

Check Power Supply Voltage: Use a multimeter to verify the power supply voltage to the PIN pad is within the specified range.

Safety Warning:

Safe Handling: Always disconnect the power supply before inspecting or re-seating cables.
ESD Hazard: Static discharge can damage electronic components. Ground yourself before touching any connectors. Avoid working on the device during electrical storms.

Prevention:

Implement cable strain relief to prevent damage to the connection cable. Secure the cable to the counter or terminal stand.,Regularly clean the PIN pad and terminal with a dry, lint-free cloth. Avoid using excessive moisture.,Consider using an anti-static mat or spray, especially in dry environments to minimize ESD risk.,Schedule periodic firmware updates for the PIN pad to ensure compatibility and stability. Check Dejavoo's website for update notifications.

Expert Tip:

Try a different USB cable. A seemingly functional cable can have internal breaks causing intermittent connectivity. Use a known good cable for testing. If the device is connected to a USB hub, connect directly to the terminal to eliminate the hub as a potential point of failure.

Frequently Asked Questions

•Is the PIN pad detected by the main terminal's operating system?

Check the device manager or system information on the terminal to confirm the PIN pad is recognized.

•What is the voltage output of the power supply?

Use a multimeter to measure the voltage output of the power supply connected to the PIN pad.

•Are there any error messages or codes displayed on the main terminal related to the PIN pad?

Note any specific error messages as they can provide clues about the cause of the 'Offline' error.

Dejavoo Z11 PIN Pad Offline Error: Technical Diagnostic Report

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Is the PIN pad detected by the main terminal's operating system?

•What is the voltage output of the power supply?

•Are there any error messages or codes displayed on the main terminal related to the PIN pad?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: