Gryphon Coin Mech Tilt Sensor Diagnostic and Solution -... | terminalfaults.org

Technical Background:

Tilt sensors in coin mechanisms typically utilize a mercury switch, accelerometer, or MEMS (Micro-Electro-Mechanical System) device to detect inclination. These sensors output a digital or analog signal that the coin mechanism's control board interprets. Voltage levels are typically 3.3V or 5V DC. Signal attenuation due to wiring or connector corrosion can cause false readings. Environmental factors (temperature, vibration) can also impact sensor performance. Erroneous signals can also arise from ESD (Electrostatic Discharge).

Symptoms:

The Gryphon coin mechanism only accepts coins when the host machine is perfectly level. This suggests a malfunction in the tilt sensor or its associated circuitry.

Possible Causes:

Defective tilt sensor: The sensor itself may have failed.
Wiring issues: Damaged or loose wiring between the tilt sensor and the control board.
Connector corrosion: Corrosion on the connectors of the tilt sensor or control board.
Control board malfunction: The coin mechanism's control board may be misinterpreting the tilt sensor's signal.
Calibration drift: The tilt sensor's calibration may have drifted, causing it to misreport the machine's orientation.
Mechanical obstruction: Obstruction preventing free movement, even when level.

Solution:

1

Visually inspect the wiring and connectors associated with the tilt sensor for any signs of damage or corrosion. Reseat connectors to ensure proper contact.
2

Verify the tilt sensor's power supply voltage (typically 3.3V or 5V DC) using a multimeter. Check voltage at the sensor input.
3

If the tilt sensor is accessible, gently clean it with a dry, non-static brush to remove any dust or debris.
4

Consult the Gryphon coin mechanism's service manual for instructions on calibrating the tilt sensor. Attempt recalibration if possible.
5

Using a spirit level, ensure the kiosk is itself correctly levelled. Coin-mechs can be overly sensitive. Try adjusting feet.
6

Check the coin mechanism's grounding connection. Ensure a secure and clean connection to prevent electrical noise.
7

If accessible, check error logs in the coin mech's diagnostic interface (if available via a service port) for tilt sensor related errors.

Safety Warning:

The Gryphon coin mechanism operates on 24V DC. Always disconnect the power supply before performing any maintenance or troubleshooting. Ensure the power supply is properly grounded. Be cautious of sharp edges within the coin mechanism. Exercise caution when handling electronic components to prevent electrostatic discharge (ESD).

Prevention:

Regularly inspect wiring and connectors for damage or corrosion. Clean the coin mechanism's interior to prevent dust buildup. Ensure the host machine is installed on a stable, level surface. Implement a preventative maintenance schedule to check sensor calibration quarterly. Apply dielectric grease to connector pins to mitigate corrosion.

Expert Tip:

Some coin mechanisms allow for disabling the tilt sensor via a configuration setting. While not a permanent solution, this can be used temporarily to keep the machine operational while awaiting repairs. Also, temperature fluctuations can affect sensor readings, especially in outdoor kiosks. Ensure adequate ventilation to minimize temperature swings.

Frequently Asked Questions

•What is the expected lifespan of the tilt sensor?

The lifespan of a tilt sensor varies depending on usage and environmental conditions, but typically ranges from 5 to 10 years.

•How do I access the diagnostic interface of the coin mech?

Consult the Gryphon coin mechanism's service manual for instructions on accessing the diagnostic interface. It usually involves connecting a laptop to a service port on the coin mechanism.

•What type of dielectric grease is recommended for the connectors?

Use a silicone-based dielectric grease specifically designed for electronic connectors. Ensure it is compatible with the connector materials.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the expected lifespan of the tilt sensor?

•How do I access the diagnostic interface of the coin mech?

•What type of dielectric grease is recommended for the connectors?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: