Troubleshooting the Hantle 1700W "Low Paper" error. Diagnostics include sensor checks and non-invasive repair steps for optimal performance.
Consult the Hantle 1700W parts manual for the correct sensor part number.
The paper path should be cleaned at least quarterly, or more frequently in dusty environments.
Use electronics-grade compressed air that is moisture-free and static-dissipative.
The Hantle 1700W utilizes an optical or mechanical sensor to detect the paper level. The sensor output is a 24V DC signal. Signal attenuation due to dust, debris, or component degradation can cause false negatives. The validator's main logic board reads this signal. Incorrect readings trigger the 'Low Paper' state.
High voltage is present within the Hantle 1700W. Only qualified technicians should perform internal repairs. Ensure the device is disconnected from the power source before any inspection or maintenance. Follow safe handling procedures, including wearing appropriate personal protective equipment (PPE), such as gloves. Be cautious of sharp edges inside the device.
Regularly inspect and clean the paper sensor area (every 3 months). Use compressed air to remove dust and debris. Ensure proper cable strain relief to prevent wiring damage. Schedule preventative maintenance during periods of reduced use to avoid downtime.
In some Hantle validators, the 'Low Paper' error can be temporarily bypassed by rapidly cycling the power. This forces a sensor recalibration. This is a temporary workaround, not a permanent fix. The sensor still needs investigation.