Poynt Smart Terminal Rebooting: Temperature Sensor... | terminalfaults.org

Technical Background:

The Poynt Smart Terminal uses a thermistor or integrated temperature sensor to monitor internal temperature for performance throttling and safety. Erroneous temperature readings can trigger protective shutdowns, resulting in reboots. The analog-to-digital converter (ADC) reading from the sensor, if outside acceptable parameters, halts the boot process or causes runtime instability. External factors like ESD can interfere with the ADC's accuracy. Cable strain could also affect the power supply unit (PSU), resulting in inconsistent voltage supply and thus incorrect sensor readings.

Symptoms:

Poynt Smart Terminal exhibiting constant rebooting behaviour, specifically observed in colder ambient temperatures. Reported temperature sensor malfunction.

Possible Causes:

Faulty temperature sensor providing inaccurate readings.
Loose or damaged power cable resulting in inconsistent voltage supply to the sensor and mainboard.
Electrostatic discharge (ESD) affecting the sensor or ADC.
Corrupted firmware causing misinterpretation of temperature sensor data.
Internal component failure on the mainboard affecting sensor circuitry.
Extreme cold affecting the sensor's operational range and accuracy.

Solution:

1

Perform a Safe Handling procedure: Unplug the Poynt Smart Terminal from its power source.
2

Inspect the power cable for any signs of damage, fraying, or loose connections. Replace the cable if necessary with an official Poynt replacement.
3

Ensure the terminal is placed on a stable, dry surface away from potential sources of ESD, especially in dry winter conditions.
4

Check for any available firmware updates via the Poynt Merchant Services portal. Apply updates following Poynt's official procedures.
5

If possible, move the terminal to a warmer location to see if the rebooting issue persists. Record the ambient temperature.
6

Using a lint-free cloth, gently clean the exterior of the terminal, paying particular attention to the area around the display and any ventilation ports. This helps prevent static build-up.
7

If the problem persists after these steps, contact Poynt support for advanced diagnostics and potential hardware replacement under warranty.

Safety Warning:

Safe Handling: Always unplug the device before cleaning or inspecting cables. Never attempt to open the Poynt Smart Terminal casing as this will trigger anti-tamper mechanisms, void the warranty, and potentially damage the device permanently. Static electricity can damage electronic components; ground yourself before touching the terminal, especially in dry conditions.

Prevention:

Regularly clean the terminal with a dry, lint-free cloth. Ensure the power cable is properly connected and free from strain. Monitor the ambient temperature of the environment where the terminal is located, avoiding extreme cold. Apply firmware updates promptly as they become available.

Expert Tip:

A sudden temperature change can temporarily affect the sensor's accuracy. If the rebooting occurs after the terminal has been moved from a cold environment, allow it to acclimate to the new temperature for at least 30 minutes before use. Check the Poynt system logs remotely via the merchant portal for specific error codes related to the temperature sensor.

Frequently Asked Questions

•What is the operating temperature range of the Poynt Smart Terminal?

Refer to the Poynt Smart Terminal's official documentation for the specified operating temperature range.

•How do I access the Poynt Merchant Services portal to check for firmware updates?

Access the Poynt Merchant Services portal through your web browser using your merchant account credentials. Navigate to the 'Settings' or 'Device Management' section to find firmware update options.

•What type of cleaning solution is safe to use on the Poynt Smart Terminal's screen?

Use a dry, lint-free cloth specifically designed for cleaning electronic screens. Avoid using harsh chemicals or abrasive cleaners as they can damage the display.

Poynt Smart Terminal Rebooting: Temperature Sensor Diagnostic

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the operating temperature range of the Poynt Smart Terminal?

•How do I access the Poynt Merchant Services portal to check for firmware updates?

•What type of cleaning solution is safe to use on the Poynt Smart Terminal's screen?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: