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Rocky Mountain Vending

USE EXACT CHANGE LED Diagnostic

VendnetUSA VendnetUSA 4217818 REVB

Cold DrinkLow confidenceExact parts not verified
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USE EXACT CHANGE LED Diagnostic

Investigates why the USE EXACT CHANGE indicator remains active, progressing through coin tube levels, coin mechanism health, payment harness integrity, and controller communication.

Low RiskOperator5-10 min
Payments4 stepsoperator-intermediate

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

    Verify Coin Tube Stock Levels

    operator-intermediateunskilled-safe

    Power off and open the machine. Remove the coin mechanism and inspect all coin tubes. Each tube should have sufficient coins to make change for common transactions.

    Flashlight or Work Light
    Stop conditions
    • coin-mechanism-has-visible-corrosion-or-water-damage

    Expected: All change tubes are adequately stocked

    Evidence to note: photo

  2. 2

    Inspect and Clean Coin Mechanism

    operator-intermediateunskilled-safe

    Examine the coin mechanism for jammed coins, debris, or sticky components. Clean the coin path with a soft dry cloth. Reinstall and test with sample coins.

    Flashlight or Work LightSoft Dry Cloth

    Expected: Coins are accepted and correctly routed to tubes or cash box

    Evidence to note: note

  3. 3

    Check Payment Harness Connections

    operator-intermediateunskilled-safe

    With power off, trace the harness from the coin mechanism to the controller. Verify each connector is fully seated with no bent pins, corrosion, or loose wires.

    Flashlight or Work Light
    Stop conditions
    • burning-smell-at-connector
    • visible-arc-damage

    Expected: All connectors in the payment harness are secure and undamaged

    Evidence to note: photo

  4. 4

    Retest and Observe LED Behavior

    operator-intermediateunskilled-safe

    Power on the machine. Perform a test vend with coins. Observe whether the USE EXACT CHANGE LED turns off after coin tubes are confirmed full and mechanism is functional.

    Expected: USE EXACT CHANGE LED turns off when system detects adequate change-making ability

    Evidence to note: note

Tools for this route

Flashlight or Work LightSoft Dry Cloth

Parts status

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

Candidate areas for part verification

Payment componentsPower Input ComponentsPower Supply and TransformerCooling componentsDisplay and keypad partsPower components

Other Possible Issues

Switch routes if this symptom is not the closest match.

All issues
CoolingCompressor Not Running — Warm ProductsCoolingCompressor Running But Poor CoolingDisplay / keypadMAKE ANOTHER SELECTION LED IssuePowerCompletely Unresponsive MachineVend pathMotor Runs But Product Does Not Dispense