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Rocky Mountain Vending

Coin Tube Jam

VendnetUSA 4209026

SnackLow confidenceExact parts not verified
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Coin Tube Jam

This guide assists in diagnosing and clearing blockages within the coin dispensing tubes associated with the MDB changer.

Low VoltageTechnician5-10 min
Payments5 stepstechnician-advanced

Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.

  • Repeated tube jams: Inspect tube condition and coin quality. Worn or damaged tubes may need replacement.
  • If tube jams are persistent or if the underlying cause is suspected to be mechanical wear, escalate this to a qualified technician.
  • Any electrical troubleshooting related to the changer mechanism must be handled by a qualified technician.

Checklist

Guided Diagnostic Steps

Work from low-risk checks toward technician-level inspection only when evidence supports it.

Printable checklist

You can read or print the route now. The first checkbox click opens the service contact gate.

lead gated
  1. 1

    Power down the machine and access the coin tube area.

    technician-advancedtechnician

    Power down the machine and access the coin tube area.

    Flashlight or Work Light
    Stop conditions
    • If tube jams are persistent or if the underlying cause is suspected to be mechanical wear, escalate this to a qualified technician.
    • Any electrical troubleshooting related to the changer mechanism must be handled by a qualified technician.

    Expected: Initial condition is documented before deeper diagnosis.

    Evidence to note: note

  2. 2

    Visually inspect all tubes for signs of overfilling or misalignment.

    technician-advancedtechnician

    Visually inspect all tubes for signs of overfilling or misalignment.

    Flashlight or Work Light
    Stop conditions
    • If tube jams are persistent or if the underlying cause is suspected to be mechanical wear, escalate this to a qualified technician.
    • Any electrical troubleshooting related to the changer mechanism must be handled by a qualified technician.

    Expected: Initial condition is documented before deeper diagnosis.

    Evidence to note: note

  3. 3

    Carefully inspect each coin tube for any stuck or misaligned coins.

    technician-advancedtechnician

    Carefully inspect each coin tube for any stuck or misaligned coins.

    Flashlight or Work Light
    Stop conditions
    • If tube jams are persistent or if the underlying cause is suspected to be mechanical wear, escalate this to a qualified technician.
    • Any electrical troubleshooting related to the changer mechanism must be handled by a qualified technician.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

  4. 4

    If a jam is confirmed, gently manipulate the tube or dispensing mecha...

    technician-advancedtechnician

    If a jam is confirmed, gently manipulate the tube or dispensing mechanism to free the coin.

    Flashlight or Work Light
    Stop conditions
    • If tube jams are persistent or if the underlying cause is suspected to be mechanical wear, escalate this to a qualified technician.
    • Any electrical troubleshooting related to the changer mechanism must be handled by a qualified technician.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

  5. 5

    Ensure the tubes are properly loaded with the correct denominations a...

    technician-advancedtechnician

    Ensure the tubes are properly loaded with the correct denominations after clearing the jam.

    Flashlight or Work Light
    Stop conditions
    • If tube jams are persistent or if the underlying cause is suspected to be mechanical wear, escalate this to a qualified technician.
    • Any electrical troubleshooting related to the changer mechanism must be handled by a qualified technician.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

Tools for this route

Flashlight or Work Light

Parts status

Exact public parts list not verified yet. Use this route to identify the system before ordering.

Candidate areas for part verification

Payment componentsMDB Coin MechanismMDB Communication HarnessMain Controller BoardPower CordMain Fuse

Other Possible Issues

Switch routes if this symptom is not the closest match.

All issues
PaymentsMDB Coin Dispense Error DiagnosisPaymentsCoin Jam in Acceptor PathPowerMachine Will Not Power OnDelivery sensorDelivery sensor or bin problemDoor / lockDoor, latch, or lock problem