ICT L70 Bill Jam Clearing Procedure - Solar Faults | terminalfaults.org

Technical Background:

The ICT L70 utilizes optical sensors to detect bill presence and movement. Solenoids control the bill path. The 24V DC logic controls the solenoids and motors. Jams can trigger over-current protection, shutting down the validator. Misaligned optics or solenoid failure contribute to false jams.

Symptoms:

The ICT L70 bill validator reports a bill jam error. Bills are stuck within the transport mechanism and are not fully accepted or rejected.

Possible Causes:

Accumulation of dirt and debris on optical sensors, leading to misdetection of bill edges.
Mechanical obstruction in the bill path due to foreign objects or damaged bill currency.
Solenoid malfunction: Failure to fully engage or disengage, blocking bill passage.
Drive belt slippage or wear, resulting in inconsistent bill transport speed.
Voltage fluctuations in the 24V DC power supply affecting solenoid operation.
Incorrect bill calibration settings for polymer currency.

Solution:

1

Initiate Lockout/Tagout (LOTO) procedures: Disconnect power to the kiosk at the main breaker. Verify no voltage is present using a calibrated multimeter.
2

Inspect the bill validator's external housing for any signs of physical damage or tampering. Document any findings.
3

Access the bill validator's service menu via the kiosk's diagnostic interface. Use the 'bill eject' function to attempt to clear the jam. Refer to the kiosk's or validator's technical manual for the exact key sequence.
4

If the bill eject function fails, manually access the bill validator. The location and access procedure should be documented in the kiosk's maintenance manual. Typically involves opening a secured access panel.
5

Carefully remove any visible obstructions from the bill path. Use blunt plastic tools to avoid damaging the sensors or internal components.
6

Once the jam is cleared, visually inspect the bill path for any remaining debris or damage.
7

Restore power and test the bill validator with multiple bills to ensure proper operation. Verify the acceptance rate and reject rate.

Safety Warning:

High voltage is present within the kiosk's power supply. Always follow Lockout/Tagout (LOTO) procedures before performing any maintenance. Ensure the kiosk is properly grounded to prevent electrical shock. Do not use conductive tools near energized components.

Prevention:

Implement a regular cleaning schedule for the bill validator, using a soft brush and compressed air to remove dust and debris. Frequency: Monthly.,Ensure the kiosk's power supply provides a stable 24V DC output. Monitor voltage levels periodically.,Inspect the bill validator's drive belts for wear and tear. Replace belts as needed.,Verify and update the bill calibration settings to match the currency in use. Consult the ICT L70 technical manual for the correct procedure.,Implement a bill quality control policy to minimize the acceptance of damaged or excessively worn bills. Consider installing a bill grading sensor.,Check for proper grounding of the kiosk and validator to minimize ESD (Electrostatic Discharge) events.

Expert Tip:

Use a borescope to visually inspect the bill path for hidden obstructions without disassembling the validator. Pay close attention to the area around the optical sensors. A quick visual confirmation can save significant time.

Frequently Asked Questions

•What diagnostic codes does the L70 display after a jam?

Specific error codes (consult ICT manual) indicate sensor malfunction, solenoid failure, or motor stall. Record these.

•What is the bill thickness range the L70 is calibrated for?

Refer to the ICT L70 technical specifications. Using out-of-spec bills can cause jams. Check the bill calibration settings.

•How often should the bill validator be calibrated?

Calibration should be performed at least semi-annually, or whenever new currency is introduced or significant wear is observed.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What diagnostic codes does the L70 display after a jam?

•What is the bill thickness range the L70 is calibrated for?

•How often should the bill validator be calibrated?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: