MEI Cashflow 7000: Coin Overflow Error Diagnostic -... | terminalfaults.org

Technical Background:

The coin mechanism uses optical sensors and mechanical levers to detect and route coins. The control board monitors the signals from these sensors. A coin overflow error can be triggered by: 1) Blocked or misaligned optical sensors producing incorrect coin counts. 2) A malfunctioning coin diverter solenoid causing coins to accumulate. 3) Corrupted EEPROM data leading to incorrect capacity thresholds. 4) 24V DC power fluctuation affecting sensor accuracy.

Symptoms:

The MEI Cashflow 7000 displays a "Coin Overflow Error" message. This indicates the coin mechanism has detected a quantity of coins exceeding its programmed capacity or a blockage in the coin path.

Possible Causes:

Physical obstruction within the coin path (e.g., foreign objects, deformed coins).
Malfunctioning or jammed coin diverter solenoid.
Contamination of optical sensors (dust, debris, liquid spills).
Degraded or loose wiring harness connections to the coin mechanism.
Low voltage from the 24V DC power supply affecting sensor operation.
Software or firmware error within the coin mechanism's controller.

Solution:

1

Initiate a soft reset of the MEI Cashflow 7000 through the kiosk's diagnostic menu, if available.
2

Inspect the coin entry and exit points for any visible obstructions or foreign objects.
3

Perform a visual inspection of the coin mechanism for any signs of physical damage or misalignment.
4

Use compressed air to carefully clean the optical sensors within the coin mechanism. Avoid direct contact with the sensor lenses.
5

Cycle the power to the kiosk to reset the coin mechanism's controller.
6

If the error persists, consult the MEI Cashflow 7000 service manual for specific diagnostic procedures and error code interpretations.
7

Contact a certified MEI technician for advanced troubleshooting and repair.

Safety Warning:

The cash kiosk operates on 24V DC. Before performing any maintenance, disconnect the kiosk from the main power source using Lockout/Tagout (LOTO) procedures to prevent electrical shock. Be cautious of sharp edges within the coin mechanism. Wear appropriate personal protective equipment (PPE), such as gloves.

Prevention:

Implement a regular cleaning schedule for the coin mechanism. Use compressed air to remove dust and debris. Train personnel to identify and remove any foreign objects from the coin entry points. Ensure the kiosk environment is protected from excessive moisture and extreme temperatures.

Expert Tip:

The MEI Cashflow 7000 may have a self-test function accessible through a hidden menu. Consult the service manual for the specific key combination or procedure to initiate the self-test. This can help pinpoint the source of the error.

Frequently Asked Questions

•What is the recommended cleaning frequency for the coin mechanism?

Cleaning frequency depends on usage and environmental conditions. A weekly visual inspection and monthly cleaning with compressed air is generally recommended.

•Where can I find the MEI Cashflow 7000 service manual?

The service manual may be available for download from the CPI website or through authorized CPI distributors.

•What type of compressed air is recommended for cleaning the optical sensors?

Use clean, dry, oil-free compressed air specifically designed for electronic components. Avoid using canned air that may contain propellants that can damage the sensors.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the recommended cleaning frequency for the coin mechanism?

•Where can I find the MEI Cashflow 7000 service manual?

•What type of compressed air is recommended for cleaning the optical sensors?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: