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Rocky Mountain Vending

Internal Power Supply Check

Automatic Products 960 A La Carte

OtherHigh confidenceExact parts not verified
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Internal Power Supply Check

This procedure traces the electrical path from the main power source through the necessary conditioning components to the main control logic board.

High VoltageTechnician8-12 min
Power7 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.

  • Live voltage measurement in progress. Do not touch bare terminals.
  • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
  • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

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

    Ensure the machine is completely disconnected from the main power sou...

    technician-advancedlive-voltage

    Ensure the machine is completely disconnected from the main power source before opening any enclosures.

    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.

    Stop conditions
    • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
    • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

    Expected: Initial condition is documented before deeper diagnosis.

    Evidence to note: note

  2. 2

    Visually inspect all visible wiring connections for any signs of over...

    technician-advancedlive-voltage

    Visually inspect all visible wiring connections for any signs of overheating or physical damage.

    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.

    Stop conditions
    • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
    • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

    Expected: Initial condition is documented before deeper diagnosis.

    Evidence to note: note

  3. 3

    Open the main junction box and inspect all wiring connections for sec...

    technician-advancedlive-voltage

    Open the main junction box and inspect all wiring connections for security and damage for a qualified technician.

    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.

    Stop conditions
    • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
    • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

  4. 4

    Measure the voltage at the transformer's primary input terminals usin...

    technician-advancedlive-voltage

    Measure the voltage at the transformer's primary input terminals using appropriate testing equipment for a qualified technician.

    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.

    Stop conditions
    • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
    • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

  5. 5

    Measure the voltage output from the transformer's secondary terminals...

    technician-advancedlive-voltage

    Measure the voltage output from the transformer's secondary terminals for a qualified technician.

    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.

    Stop conditions
    • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
    • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

  6. 6

    Verify the continuity of the motor harness wires back to the control...

    technician-advancedlive-voltage

    Verify the continuity of the motor harness wires back to the control board.

    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.

    Stop conditions
    • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
    • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

  7. 7

    Test the system by swapping the suspect motor with a known good unit.

    technician-advancedlive-voltage

    Test the system by swapping the suspect motor with a known good unit.

    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.

    Stop conditions
    • Due to the presence of live-voltage checks, this procedure requires a qualified technician to safely measure voltages and test circuits.
    • For any work involving the transformer or main power input, only a qualified technician should perform measurements.

    Expected: Result is documented before continuing the route.

    Evidence to note: note

Tools for this route

No special tools listed

Location Help

Where to find this

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

Power Input

Start outside the machine at the outlet and cord, then identify the power entry area before any protected-compartment inspection.

  • Provides the main AC connection from the facility wall outlet to the machine's internal distribution block.
  • Power cord
  • Wall plug
  • Main junction block

Do not open energized or protected electrical areas unless a qualified technician or licensed electrician is handling the work.

cabinet genericcontrol board genericpower supplyterminal block

Parts status

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

Candidate areas for part verification

Power componentsVend MotorsControl BoardsRefrigeration ComponentsPower Supply ComponentsPayment System Devices

Other Possible Issues

Switch routes if this symptom is not the closest match.

All issues
Vend pathVend Motor Circuit CheckCoolingCooling or refrigeration problemDoor / lockDoor, latch, or lock problemPaymentsPayment or money acceptance problemWater / fittingsWater Flow or Fitting Service