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Rocky Mountain Vending

Reader Showing Error State via LED

VendnetUSA Greenlite Cashle

OtherMedium confidenceExact parts not verified
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Reader Showing Error State via LED

Diagnostic flow for readers displaying error indicators through LED patterns

High VoltageOperator5-10 min
Payments1 stepsoperator-intermediate

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.

  • Reader is hot to touch or making unusual sounds: Disconnect power immediately and contact manufacturer

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

    Check MDB Voltage at Controller Output

    technician-advancedlive-voltage

    Measure voltage at the machine controller's MDB cashless output port. This isolates whether the issue is the cable or the controller output. Consult manufacturer specifications for expected values.

    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.

    Digital Multimeter
    Stop conditions
    • Any sign of sparking
    • Unexpected voltage levels

    Expected: Voltage present at controller MDB output within specification

    Evidence to note: meter-reading

Tools for this route

Digital MultimeterFlashlight or Work LightNotepad or Documentation Tool

Location Help

Where to find this

Use this as orientation before touching the machine. It is location help, not a repair instruction.

LED Status Indicators

Start at the front door payment column; match the display, keypad, coin, bill, or card device to the symptom before opening deeper panels.

  • Communicates device operational state, connectivity status, and error conditions through colored LED patterns
  • Status LED
  • Action LED
  • Internal indicator LEDs

Do not open protected compartments unless a qualified technician is handling the work.

cabinet generic

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 Cable AssemblyCashless Reader UnitMDB ConnectorController and wiring componentsPower components

Other Possible Issues

Switch routes if this symptom is not the closest match.

All issues
ControllerReader Intermittent Operation DiagnosisOtherReader Shows Connectivity Error via LEDPowerReader Has No Power with MDB ConnectedPowerReader Has No Power - MDB DisconnectedVend pathProduct not dispensing